Best Air Filter For Bikes: 10 Options Compared

Best Air Filter For Bikes

A strong bike air filter should match the carburetor’s inlet diameter and the space available, making it a practical choice for riders replacing a filter on a dirt bike, pit bike, ATV, or mini bike. This roundup compares 10 options with stated sizes from 35mm to 51mm, including compact filters for PZ-series carburetors and larger cone or mushroom-style designs. Compatibility claims vary: some products specify PZ19/PZ20 or particular engine sizes, while others give a diameter or a broad vehicle list.

Check your carburetor’s measured filter opening before ordering rather than relying on engine displacement alone. The picks also differ in shape and included parts, so the best fit depends on your intake layout and whether you need a replacement filter alone or a kit with extras.

HIAORS 35mm Motorcycle Air Filter leads because it states compatibility with PZ19/PZ20 carburetors and a broad range of 49cc–125cc Chinese mini bikes, ATVs, and go-karts, plus Honda CRF50/XR50 and CRF70/XR70. Its 35mm size makes it a relevant option for riders whose carburetor opening matches. Confirm that measurement and the available clearance before buying; the broad fitment list does not establish compatibility with every bike in those engine classes.

Our Top Picks

HIAORS 35mm Air FilterBest Overall

HIAORS 35mm Air Filter

Its 35mm inlet fits stated PZ19/PZ20 carburetors, and the listing names many 49cc–125cc mini bikes, ATVs, and go-karts.

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JGMOTO 35mm Air FilterBest Extended Engine Fit

JGMOTO 35mm Air Filter

The 35mm filter lists PZ16/PZ19/PZ20 compatibility and engines from 50cc to 200cc, with a reinforced metal outer shell.

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Strongthium 35mm Pod FilterBest Included Extras

Strongthium 35mm Pod Filter

Its 35mm fitment includes PZ19/PZ20 and numerous small-bike applications; the package also lists fuel line, fuel filter, and clamps.

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Compare the filters by inlet size and fitment

#ProductDimensionsDimensionsBuy
12.91"L x 2.91"W x 3.15"H2.91"L x 2.91"W x 3.15"HView on Amazon
2
JGMOTO 35mm Air Filter2. JGMOTO 35mm Air FilterBest Extended Engine Fit
3.44"L x 2.88"W x 3.44"H3.44"L x 2.88"W x 3.44"HView on Amazon
3
Strongthium 35mm Pod Filter3. Strongthium 35mm Pod FilterBest Included Extras
3.21"L x 2.93"W x 1.38"H3.21"L x 2.93"W x 1.38"HView on Amazon
4
NIBBI 48mm Cone Filter4. NIBBI 48mm Cone FilterBest Angled 48mm Option
1.89"L x 1.89"W x 5.71"H1.89"L x 1.89"W x 5.71"HView on Amazon
5
NIBBI Racing 48mm Filter5. NIBBI Racing 48mm FilterAdjustable-clamp 48mm filter
3.07"L x 3.07"W x 5.51"H3.07"L x 3.07"W x 5.51"HView on Amazon
6
Strongthium 48–50mm Filter6. Strongthium 48–50mm FilterAngled 48–50mm intake filter
1.3"L x 1.3"W x 1"H1.3"L x 1.3"W x 1"HView on Amazon
7
ZSDTRP 38mm Air Filter7. ZSDTRP 38mm Air FilterCompact 38mm two-filter set
——View on Amazon
8
JRL 38mm Foam Filter8. JRL 38mm Foam FilterAngled foam pit-bike filter
0.01"L x 0.01"W x 0.01"H0.01"L x 0.01"W x 0.01"HView on Amazon
9
ZSDTRP 48mm Air Filter9. ZSDTRP 48mm Air FilterTwo-filter 48mm replacement set
——View on Amazon
10
ZUDKSUY 51mm Mushroom Filter10. ZUDKSUY 51mm Mushroom FilterSnap-on 51mm intake filter
4.13"L x 3.74"W x 2.95"H4.13"L x 3.74"W x 2.95"HView on Amazon

Detailed Reviews: Best Air Filter For Bikes

HIAORS 35mm Air Filter

#1 · Best Overall

1. HIAORS 35mm Air Filter

  • Dimensions: 2.91"L x 2.91"W x 3.15"H
  • Dimensions: 2.91"L x 2.91"W x 3.15"H

Best for: 35mm small-bike replacement.

Why it ranks #1: Its 35mm inlet fits stated PZ19/PZ20 carburetors, and the listing names many 49cc–125cc mini bikes, ATVs, and go-karts.

A 35mm inlet matched to PZ19 and PZ20 carburetors gives this HIAORS filter a clear role on many small-displacement bikes and recreational vehicles. Its listed compatibility spans 49cc to 125cc machines, including CRF50, XR50, CRF70 and XR70 applications, helping buyers narrow the search by carburetor and engine size.

The stated PZ19/PZ20 compatibility and 35mm size provide two practical checkpoints before choosing this replacement: compare the carburetor connection and the listed applications. HIAORS names many Chinese mini pit bikes, ATVs, quads, go-karts, scooters and mopeds, plus CRF50/XR50 and CRF70/XR70 models. That broad vehicle list can help owners of those machines identify a candidate filter, but the product information does not describe a cleaning method or special mounting hardware, so the main workflow is confirming the listed fit.

Pros
  • 35mm connection size is specified
  • Lists compatibility with PZ19 and PZ20 carburetors
  • Applications include 49cc–125cc vehicles
  • Names CRF50/XR50 and CRF70/XR70 compatibility
Cons
  • The 35mm size limits it to matching intake connections.

Skip it if you need a 48mm inlet; the NIBBI 48mm KL-WT is a better match for that connection size.

This is a candidate for owners of listed small pit bikes, ATVs, scooters or similar machines with a matching 35mm connection. Check the PZ19/PZ20 and vehicle details against your setup before choosing it.

Full product details
BrandHIAORS
Dimensions2.91"L x 2.91"W x 3.15"H
ManufacturerHIAORS
Part NumberIN087-Red-35mm
Model NumberIN087-Red-35mm

Listed on Amazon as: HIAORS 35mm Motorcycle Air Filter Compatible with 50cc 70cc 90cc 110cc 125cc Coolster Tao Tao Sunl Apollo Roketa X-pro SSR Baja Vitacci Peace Sports ATV Quad Go Kart Pit Dirt Bike Parts Red

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JGMOTO 35mm Air Filter

#2 · Best Extended Engine Fit

2. JGMOTO 35mm Air Filter

  • Dimensions: 3.44"L x 2.88"W x 3.44"H
  • Dimensions: 3.44"L x 2.88"W x 3.44"H

Best for: 35mm reinforced-shell filter.

Why it ranks #2: The 35mm filter lists PZ16/PZ19/PZ20 compatibility and engines from 50cc to 200cc, with a reinforced metal outer shell.

A reinforced metal outer shell is the defining feature of this JGMOTO 35mm filter, intended to help protect its filter element from impact and deformation. Its stated PZ16, PZ19 and PZ20 compatibility and 50cc–200cc application range make it a candidate for numerous dirt bikes, mini bikes, ATVs and scooters.

The specified 35mm internal diameter, along with the 87.3mm length and 73.2mm width, gives buyers concrete dimensions to compare with the available intake space. JGMOTO lists PZ16/PZ19/PZ20 carburetors and engines from 50cc to 200cc, across dirt bikes, mini bikes, ATVs and scooters. The reinforced metal outer shell is intended to protect the filter element from impact and deformation, a practical consideration on compact vehicle installations. The listing does not describe filter cleaning or maintenance.

Pros
  • 35mm internal diameter is specified
  • Lists PZ16, PZ19 and PZ20 carburetor compatibility
  • Applications span listed 50cc–200cc engines
  • Reinforced metal shell is intended to protect against impact and deformation
Cons
  • Its 35mm inlet excludes setups with different connection sizes.

Skip it if you need a 48mm angled inlet for a larger carburetor connection; Strongthium 48mm Motorcycle Bend Air Filter lists that size range.

This suits riders with a listed PZ carburetor and 35mm connection who value the added impact protection of a reinforced shell. Compare its dimensions with your available space as well as the inlet size.

Full product details
BrandJGMOTO
Included Componentsair filter
Dimensions3.44"L x 2.88"W x 3.44"H
ManufacturerJGMOTO
Part NumberAL-UN-001
Manufacturer Warranty Description1 year
Model Number35/42/56mm

Listed on Amazon as: Universal 35mm Air Filter for 50cc 70cc 90cc 110cc 125cc 150cc 200cc Motorcycle Dirt Bike ATV Scooter Mini Bike Air Filter

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Strongthium 35mm Pod Filter

#3 · Best Included Extras

3. Strongthium 35mm Pod Filter

  • Dimensions: 3.21"L x 2.93"W x 1.38"H
  • Dimensions: 3.21"L x 2.93"W x 1.38"H

Best for: 35mm mini-bike intake kit.

Why it ranks #3: Its 35mm fitment includes PZ19/PZ20 and numerous small-bike applications; the package also lists fuel line, fuel filter, and clamps.

A 35mm air-intake filter with a listed fuel line, fuel filter and clamps makes this Strongthium option more than a filter alone. Its stated PZ19/PZ20 and small-engine applications cover many mini pit bikes, ATVs, go-karts and similar vehicles, giving owners a compact set of named intake-related components to consider.

The 35mm filter is listed for PZ19/PZ20 carburetors and a broad set of 49cc–125cc machines, including Chinese-made mini pit bikes, ATVs, quads, go-karts and scooters. That fit range helps owners compare their application before selecting it. Strongthium also lists a 1/4-inch ID fuel line, fuel filter and clamps among the included components, which can make those items available during the same maintenance job. The listing does not specify a cleaning method for the air filter.

Pros
  • 35mm intake filter size is specified
  • Lists PZ19 and PZ20 carburetor compatibility
  • Applications include many 49cc–125cc vehicles
  • Includes a 1/4-inch ID fuel line, fuel filter and clamps
Cons
  • The 35mm connection is limited to matching intake sizes.

Skip it if you need a 48mm filter connection; ZSDTRP SCL-2012122805-480A01ZS is listed as a 48mm two-piece set.

This suits owners of listed small-engine machines who can use the 35mm intake and the included fuel-line components. Verify the carburetor size against your setup; the listed fit range does not make it a universal connection.

Full product details
BrandStrongthium
Included Components1/4 inch ID fuel line, Fuel Filter, clamps
Dimensions3.21"L x 2.93"W x 1.38"H
ManufacturerYIYUQI
Part NumberMotorcycle 35mm Air Intake Filter
Manufacturer Warranty Description1 Year Manufacturer
Model Number1275

Listed on Amazon as: Strongthium Motorcycle Pod 35mm Air Intake Filter Cleaner Red

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NIBBI 48mm Cone Filter

#4 · Best Angled 48mm Option

4. NIBBI 48mm Cone Filter

  • Dimensions: 1.89"L x 1.89"W x 5.71"H
  • Dimensions: 1.89"L x 1.89"W x 5.71"H

Best for: Angled 48mm performance intake.

Why it ranks #4: The 48mm cone uses a 45-degree bend and 360-degree intake, a useful specified shape for compatible dirt, pit, and mini bikes.

A 45-degree bent inlet gives the NIBBI KL-WT a practical option when an angled 48mm connection suits the carburetor layout. Its cone shape and 360-degree intake are specified to increase airflow, while accordion mesh is intended to improve filtration and support throttle response on compatible dirt bikes, pit bikes and ATVs.

The 48mm inlet and 45-degree bend are useful fit and routing details: together, they identify the connection size and an angled approach rather than a straight inlet. NIBBI also lists a non-woven filter surface wrapped in aluminum mesh to isolate airborne dust, with accordion mesh intended to improve filtration. The product information connects increased intake airflow with acceleration and throttle response, but gives no cleaning procedure or exact vehicle-specific fit list beyond broad applications such as GY6, SSR and TTR.

Pros
  • 48mm inlet size is specified
  • 45-degree bend can suit angled intake layouts
  • Cone form provides 360-degree air intake
  • Accordion mesh is intended to improve filtration
Cons
  • The 48mm inlet and fixed 45-degree bend may not suit other layouts.

Skip it if you need a 35mm PZ19/PZ20 fit for a small pit bike; HIAORS 35mm IN087-Red-35mm matches that listed setup.

Choose this for a compatible 48mm carburetor where a 45-degree inlet and airflow-focused cone form suit the intake layout. The bend and connection size are specific considerations, not universal fit details.

Full product details
Brandnibbi
Dimensions1.89"L x 1.89"W x 5.71"H
Manufacturernibbi
Part NumberKL-WT
Model NumberKL-WT

Listed on Amazon as: NIBBI 48mm Motorcycle Air Filter High Performance Air Filter 48mm For Dirt Bike Mini Bike Pit Bike Motocross GY6 ATV SSR TTR AJS

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NIBBI Racing 48mm Filter

#5

5. NIBBI Racing 48mm Filter

  • Dimensions: 3.07"L x 3.07"W x 5.51"H
  • Dimensions: 3.07"L x 3.07"W x 5.51"H

Best for: Adjustable-clamp 48mm filter.

Why it ranks #5: It specifies a 48mm internal diameter and names NIBBI PE17–PE28 and PWK24–PWK28 carburetors among compatible options.

An adjustable clamp that accommodates a 2mm difference gives this NIBBI 48mm filter some installation flexibility at the carburetor connection. Its cone shape and 360-degree intake are intended to increase airflow, while compatibility names NIBBI PE and PWK carburetors as well as other filters with an internal diameter within 48mm.

The stated 48mm internal diameter and adjustable clamp help define the fitting workflow: compare the carburetor opening, then use the clamp for the listed 2mm difference. NIBBI names PE17/19/22/24/26/28 and PWK24/26/28 carburetors, along with other compatible 48mm openings. Its cone shape and 360-degree intake are intended to supply airflow, and the bar-shaped intake grille is another specified design feature. The listing does not provide a filter-cleaning procedure.

Pros
  • 48mm internal diameter is specified
  • Names NIBBI PE and PWK carburetor compatibility
  • Adjustable clamp accommodates a listed 2mm difference
  • Cone form provides 360-degree air intake
Cons
  • The filter is intended for carburetor openings within the 48mm fit range.

Skip it if you need a 35mm PZ19/PZ20 small-bike filter; JGMOTO 35mm AL-UN-001 lists those carburetors and engine applications.

This fits buyers whose carburetor opening matches the listed 48mm range, especially owners of named NIBBI PE or PWK setups. Its adjustable clamp can help with the stated 2mm difference, but does not replace checking the connection.

Full product details
Brandnibbi
Included Componentsair filters
Dimensions3.07"L x 3.07"W x 5.51"H
ManufacturerNB-FT1
Part NumberB0BD8CH2ZS
Manufacturer Warranty Description1 YEAR
Model NumberNB-FT1

Listed on Amazon as: NIBBI Racing Motorcycle Air Filter,Universal 48mm Air Filters for Dirt Bike, Motocross Carburetor Cleaner for Pit Bike Scooter Moped ATV (48mm)

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Strongthium 48–50mm Filter

#6

6. Strongthium 48–50mm Filter

  • Dimensions: 1.3"L x 1.3"W x 1"H
  • Dimensions: 1.3"L x 1.3"W x 1"H

Best for: Angled 48–50mm intake filter.

Why it ranks #6: This angled filter is offered for 48mm, 49mm, and 50mm openings and lists several motorcycle makers and small-engine vehicle types.

A 45-degree angled inlet sets this Strongthium filter apart for compatible setups where a bent intake connection is useful. Its listed 48mm, 49mm and 50mm sizes, 360-degree air intake and aluminum-mesh-wrapped non-woven material give buyers specific fit and filtration details to compare.

The stated 48mm, 49mm and 50mm size range offers several connection dimensions to check against a carburetor, while the 45-degree bend describes the inlet orientation. Strongthium lists applications including Honda, Yamaha, Kawasaki and Suzuki, plus 50cc–150cc pit bikes, scooters, ATVs, quads and go-karts. The non-woven filter surface and aluminum mesh are described as filtering dust, with the mesh not prone to rust. The accordion mesh design is intended to improve filtration and support airflow.

Pros
  • Lists 48mm, 49mm and 50mm sizes
  • 45-degree angled inlet
  • 360-degree air intake
  • Non-woven filter surface wrapped in aluminum mesh to filter dust
Cons
  • The angled inlet and listed 48–50mm sizes limit fit to matching layouts.

Skip it if you need a straight 48mm inlet rather than an angled bend; NIBBI KL-WT lists a 48mm filter with a 45-degree bent inlet, so it will not solve that layout either.

Consider this for listed motorcycle and small-vehicle applications with a matching 48–50mm connection and room for a 45-degree bend. Check both inlet size and orientation against the available intake layout.

Full product details
BrandStrongthium
Included Components48mm Motorcycle Bend Air Filter
Dimensions1.3"L x 1.3"W x 1"H
ManufacturerYIYUQI
Part Number48mm Motorcycle Bend Air Filter
Manufacturer Warranty Description1 Year Manufacturer
Model Number1277

Listed on Amazon as: Strongthium 48mm 49mm 50mm Motorcycle Bend Performance Air Filter

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ZSDTRP 38mm Air Filter

#7

7. ZSDTRP 38mm Air Filter

Best for: Compact 38mm two-filter set.

Why it ranks #7: The 38mm design is described for compact motorcycle carburetors and names ATV, SSR, TTR, GY6, pit, and mini-bike applications.

A compact shape intended for small carburetor spaces is the main draw of this ZSDTRP 38mm two-piece filter set. The listing names ATV, SSR, TTR, GY6, AJS, pit and mini bikes, and says the filters help keep dust and debris from entering the intake pipe.

The 38mm replacement size and compact shape address two practical considerations for smaller carburetor areas: the connection dimension and the available space. ZSDTRP lists two filters and applications including ATV, SSR, TTR, GY6, AJS, pit and mini bikes. The stated filtering purpose is to keep impurities, dust and debris from being drawn into the intake pipe. Installation is described as taking a few minutes, although the listing does not specify a cleaning method or additional installation hardware.

Pros
  • 38mm replacement size is specified
  • Two filters are listed in the title
  • Compact shape is intended for smaller carburetor spaces
  • Designed to filter dust, debris and impurities before the intake
Cons
  • The 38mm size limits it to matching carburetor connections.

Skip it if you have a 48mm carburetor opening; ZSDTRP SCL-2012122805-480A01ZS is a listed 48mm two-piece option.

Choose this set for a listed small-bike or ATV application with a matching 38mm opening, particularly where compact shape matters. Its connection size is the key boundary, so compare it with the carburetor.

Full product details
BrandZSDTRP
ManufacturerZSDTRP
Part NumberSCL-2019110009-380B01ZS
Model NumberSCL-2019110009-380B01ZS

Listed on Amazon as: 2PCS Motorcycle Air Filter Universal 38MM Replacement Engine Filter High Performance Air Filters Fit Motocross Carburetor Cleaner for Pit Bike Scooter Moped ATV (Black)

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JRL 38mm Foam Filter

#8

8. JRL 38mm Foam Filter

  • Dimensions: 0.01"L x 0.01"W x 0.01"H
  • Dimensions: 0.01"L x 0.01"W x 0.01"H

Best for: Angled foam pit-bike filter.

Why it ranks #8: This foam option lists 37mm, 38mm, and 39mm fit and identifies pit, trail, and dirt bikes, though its fitment detail is limited.

A double-angled foam form makes this JRL filter a focused option for listed pit, trail and dirt bikes rather than a broad universal choice. Its stated fit range is 37mm, 38mm and 39mm, so buyers can compare their intake size against a narrow, clearly named set of dimensions.

The 37mm–39mm fit range is the central selection detail, and the double-angled shape distinguishes its form from a straight filter. JRL names PIT PRO, PIT Bike, Trail Bike, Dirt Bike and Thumpstar applications, giving owners of those machines a concrete starting point for checking fit. The package includes one air filter, which suits a single-filter replacement job. The listing identifies the filter as foam but provides no cleaning instructions, airflow figures or further installation details.

Pros
  • Fit range lists 37mm, 38mm and 39mm
  • Double-angled foam filter shape
  • Names PIT PRO, pit, trail and dirt bikes
  • One air filter is included
Cons
  • The listed fit range is limited to 37mm–39mm connections.

Skip it if you need a 35mm PZ19/PZ20 filter for a small mini bike; HIAORS IN087-Red-35mm is listed for that size and carburetor.

This is for pit, trail or dirt-bike owners whose intake falls within the stated 37mm–39mm range and who need one foam filter. The angled shape and limited size range are important fit considerations.

Full product details
BrandJRL
Dimensions0.01"L x 0.01"W x 0.01"H
Item Weight4.54 g
ManufacturerJRL
Part NumberAm-MB0079-B
Model Numberaz-297

Listed on Amazon as: Generic 38mm Double Angled Foam Air Filter for Pit Dirt Bike Mini Moto 110cc 125cc

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ZSDTRP 48mm Air Filter

#9

9. ZSDTRP 48mm Air Filter

Best for: Two-filter 48mm replacement set.

Why it ranks #9: The two-piece listing specifies 48mm and mentions ATV, SSR, TTR, GY6, pit, and mini bikes, but provides few further sizing details.

The two-piece format is the key practical distinction of this ZSDTRP 48mm filter set: buyers receive a pair for compatible ATV, SSR, TTR, GY6, AJS, pit and mini-bike applications. Its aluminum construction is described as resistant to corrosion and rust, while the filter is intended to keep dust and debris from the intake.

The 48mm size gives buyers a clear connection dimension to compare with a carburetor, and the listed applications span several ATV and motorcycle types, including SSR, TTR, GY6 and pit bikes. The two-piece quantity can be useful when a job calls for a pair of filters. ZSDTRP says the filters capture impurities, dust and debris before they enter the intake pipe, and describes the aluminum material as not easy to corrode or rust. The listing does not specify a cleaning method.

Pros
  • 48mm filter size is specified
  • Two filters are included
  • Lists ATV, SSR, TTR, GY6, AJS and pit-bike applications
  • Aluminum material is described as resistant to rust and corrosion
Cons
  • The listed 48mm size limits fit to matching connections.

Skip it if you need a 38mm compact replacement for a tight carburetor space; ZSDTRP SCL-2019110009-380B01ZS is listed at 38mm.

Consider this pair for a compatible 48mm intake when two filters are useful for the job. Its listed applications are broad, but connection size remains the deciding fit check for your particular carburetor.

Full product details
BrandZSDTRP
ManufacturerZSDTRP
Part NumberSCL-2012122805-480A01ZS
Model NumberSCL-2012122805-480A01ZS

Listed on Amazon as: 2PCS Motorcycle 48MM Air Intake Filter Universal Carburetor Air Filter Cleaner for Dirt Pit ATV SSR TTR Bike Breather Filter Fit for Many Different Carburetors (Black 48MM)

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ZUDKSUY 51mm Mushroom Filter

#10

10. ZUDKSUY 51mm Mushroom Filter

  • Dimensions: 4.13"L x 3.74"W x 2.95"H
  • Dimensions: 4.13"L x 3.74"W x 2.95"H

Best for: Snap-on 51mm intake filter.

Why it ranks #10: Its 51mm clip-on mushroom design is listed for motorcycles, cars, and mini bikes, but the broad fitment gives less bike-specific guidance.

A snap-on installation is the central convenience of this 51mm ZUDKSUY mushroom-head filter, with the listing stating that no specialized tools are required. The 2-inch connection size and motorcycle, car and mini-bike applications give buyers useful starting points for fit, while the clip-on design supports straightforward replacement.

The 51mm/2-inch inner size is the primary fit check, and the snap-on design is described as allowing installation and replacement without specialized tools. Those details can simplify a basic replacement workflow for a compatible motorcycle, car or mini bike. ZUDKSUY also describes the filter as supporting combustion efficiency, power output and engine protection, but does not provide measurements for those effects. The listing gives no filter material or cleaning procedure, so the stated size and installation style are the clearest selection details.

Pros
  • 51mm/2-inch size is specified
  • Snap-on design supports installation and replacement
  • Listing says specialized tools are not required
  • Applications include motorcycles, cars and mini bikes
Cons
  • The 51mm connection is specific and will not match other inlet sizes.

Skip it if you need a 48mm filter for a dirt or pit bike; NIBBI KL-WT is listed with a 48mm inlet and 45-degree bend.

This is for buyers with a matching 51mm connection who value a snap-on replacement approach across a listed motorcycle, car or mini-bike application. Confirm that the connection size and layout suit the intended intake.

Full product details
BrandZUDKSUY
Included Componentsno
Dimensions4.13"L x 3.74"W x 2.95"H
ManufacturerZUDKSUY
Part Number768553935797
Manufacturer Warranty Description1 year
Model Number768553935797

Listed on Amazon as: 51mm 2 inch Motorcycle Air Filter Black Clip-on Air Filter Mushroom Head Intake Filter for Motorcycle Car and Mini Bike Cold Air Filters

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Why a listed engine size is not a guaranteed fit

A listed engine displacement alone cannot confirm that an air filter will attach to your carburetor. The products illustrate the trap: HIAORS and Strongthium specify 35mm fit for PZ19/PZ20, while JGMOTO specifies 35mm and PZ16/PZ19/PZ20 and extends its engine list to 200cc. Those claims are not interchangeable evidence that every 35mm filter suits every engine in those ranges.

Likewise, the 48mm filters name different carburetor compatibility, with NIBBI Racing listing particular PE and PWK sizes and other listings naming broad vehicle groups. Measure the carburetor’s filter-side opening and compare it with the product’s stated internal diameter.

Then check the bend, filter length, and surrounding clearance against your intake layout; the supplied listings do not give a universal clearance guide. If a listing omits a dimension you need, verify it before ordering rather than inferring it from the title.

What a pod-filter change can affect

Changing the intake filter can alter airflow conditions, so a replacement pod should not automatically be treated as a drop-in performance upgrade. Several listings describe increased airflow or acceleration, but the supplied details do not establish measured gains on a particular bike. A change in intake setup may affect carburetor fueling, especially if the filter design or inlet differs from the existing part.

The options here vary from compact 35mm filters to 48mm and 51mm designs, with angled and mushroom-style shapes as well as a 38mm foam filter. That range makes checking the current setup important: a different size or shape may not suit the same carburetor or available space.

After fitting any replacement, follow the motorcycle or carburetor maker’s setup guidance and check that the filter is secure and the engine runs appropriately. The included fuel-line parts in one kit do not establish that every installation needs them.

How to Choose a Bike Air Filter

Match the filter inlet diameter

Start with the carburetor’s filter-side opening and choose a filter with a matching listed internal diameter. These products span 35mm, 38mm, 48mm, 48–50mm, and 51mm; JGMOTO gives 35mm/1.38 inches, while NIBBI Racing specifies approximately 48mm/1.89 inches. Strongthium’s larger option lists 48mm, 49mm, and 50mm, and ZUDKSUY lists 51mm/2 inches.

Do not choose by engine size alone, since the listings show different carburetor fitment claims across similar small-bike applications. A rider replacing a PZ19/PZ20 filter may favour a stated 35mm option; someone with a measured 48mm carburetor opening should focus on the 48mm models and verify clearance as well.

Check stated carburetor and vehicle fit

Look for a fitment statement that matches both your carburetor and vehicle rather than relying on a generic universal label. HIAORS names PZ19/PZ20 and many 49cc–125cc applications, while JGMOTO lists PZ16/PZ19/PZ20 and 50cc–200cc engines. NIBBI Racing provides a different kind of detail, naming PE17/19/22/24/26/28 and PWK24/26/28 carburetors for its 48mm filter.

Other listings mention vehicle families such as ATV, SSR, TTR, GY6, or pit bikes without the same carburetor detail. If you know your carburetor model, products with that explicit match are the more useful starting point.

If you only know engine displacement, confirm the opening size and fitment with the seller or manufacturer before selecting a filter.

Choose a shape and package for the installation

Consider the filter’s shape and included items after confirming fit, because bends and package contents differ across this selection. NIBBI’s 48mm cone and Strongthium’s 48–50mm filter describe a 45-degree bend; the ZUDKSUY option is a 51mm clip-on mushroom design, and JRL lists a double-angled foam filter. HIAORS and JGMOTO are 35mm options with compact listed dimensions, while the Strongthium 35mm package includes a 1/4-inch fuel line, fuel filter, and clamps.

That kit may suit someone who needs those extras, whereas a rider replacing only the intake filter may prefer a standalone option. Compare the product’s listed dimensions with the space around your carburetor and frame, especially when choosing a bent or larger filter.

Which Bike Air Filter Should You Choose?

Choose by measured inlet size and confirmed carburetor fit first. For a 35mm PZ19/PZ20 setup on a small bike, ATV, or go-kart, HIAORS 35mm Air Filter is the strongest starting point because its listing names those carburetors and many compatible vehicle types. If your application needs stated PZ16 compatibility or reaches the listed 200cc range, consider JGMOTO 35mm Air Filter.

For a 48mm opening, NIBBI Racing 48mm Filter gives specific PE/PWK carburetor fitment, while NIBBI 48mm Cone Filter specifies an angled inlet. Choose Strongthium 35mm Pod Filter if its fit matches and its listed fuel-line kit is useful.

For measured 38mm or 51mm openings, compare ZSDTRP 38mm Air Filter or ZUDKSUY 51mm Mushroom Filter respectively, checking vehicle fit and installation clearance.

Frequently Asked Questions

How do I measure the carburetor opening for a replacement air filter?

Measure the outside diameter of the carburetor inlet or spigot where the filter will attach, using calipers if available. Match that measurement to the filter’s stated inlet size, and check the connection style and available clearance. Do not rely on engine size or vehicle descriptions alone to establish fit.

Does changing to a pod filter require carburetor rejetting?

It can. A pod filter may change airflow, which can alter the air-fuel mixture, so check how the engine runs after installation and whether carburetor adjustment is needed. Rejetting is not automatic for every bike or filter; follow the carburetor and motorcycle guidance, and seek qualified help if unsure.

How often should a motorcycle air filter be cleaned or replaced?

Follow the filter maker’s care instructions, since cleaning methods and replacement needs depend on the filter. Inspect it more often after dusty or dirty riding, and clean or replace it when it is visibly clogged, damaged, or no longer serviceable. Keep dirt out of the intake while removing or reinstalling it.

How much clearance should I check before installing a pod filter?

Check that the filter can attach fully without contacting the frame, bodywork, or nearby components. Allow room for installation and removal, and make sure the filter does not obstruct cables or moving parts. An angled inlet may help with orientation, but confirm the actual fit on your bike before buying.

What should I confirm beyond the filter’s listed engine range?

Confirm the measured carburetor inlet size, carburetor type, and physical clearance on your vehicle. A broad engine or vehicle fitment list does not guarantee compatibility with every setup in that range. For example, the HIAORS listing names PZ19/PZ20 and several small-bike applications, but still requires measurement and fit confirmation.

Final Words

Choose by the measured carburetor opening and confirmed fit, not engine size alone. For a 35mm PZ19/PZ20 setup on a small bike, ATV, or go-kart, start with HIAORS; consider JGMOTO when stated PZ16 fitment or its listed 200cc range matters. For 48mm openings, compare the NIBBI options and their stated fitment or inlet angle.

Check clearance, and match 38mm or 51mm filters only to measured openings.

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