Best Auto Clutch For Dirt Bike: Compare 10 Semi-Auto Options

#1 · Best Overall

1. 1PZ 17T Clutch

• Weight: 3.2 lb
• Package Dimensions: 5.04 x 4.92 x 3.03 in

Best for: Reverse-engine four-wheelers.

Why it ranks #1: Lists a 17-tooth gear, 4-1/2-inch diameter, iron construction, and 50cc–135cc fitment for semi-automatic reverse engines.

A 17-tooth gear and 41⁄2-inch clutch diameter define this 1PZ assembly, giving owners of compatible semi-automatic reverse-engine machines concrete specifications to compare before replacement. Its stated 50cc–135cc range spans dirt bikes, ATVs, and go-karts, while the listed Chinese makes help narrow the application.

The 17-tooth drive gear and semi-automatic design make this a specified replacement option for compatible reverse-engine setups, rather than a manual-clutch part. Its 41⁄2-inch diameter offers another measurement to compare with the existing assembly. The stated 50cc, 110cc, 125cc, and 135cc applications cover several common engine sizes, and the listing also names brands including TaoTao, Buyang, Coolsport, Lifan, Kazuma, and SUNL. Iron construction is described as wear-resistant and quick to dissipate heat.

Skip it if you have a manual-style clutch or a machine outside the listed engine and reverse-engine applications; this assembly is specified for semi-automatic reverse setups.

A practical candidate for owners replacing a clutch on a listed 50cc–135cc semi-automatic reverse-engine ATV, dirt bike, or go-kart. Check the 17-tooth gear, diameter, engine type, and listed application before choosing it.

Listed on Amazon as: 17 Teeth Semi Automatic Clutch Assembly for 50cc 110cc 125cc 135cc ATV Quad Go Kart Dirt Bike Roketa Kazuma JCL NST SUNL Taotao

#2 · Best Measured Kit

2. KuaJiGo 17T Clutch

• Weight: 3.49 lb
• Package Dimensions: 5.51 x 5.12 x 2.76 in

Best for: Metal 17T clutch-kit seekers.

Why it ranks #2: Specifies a 4-1/2-inch metal clutch, 17-tooth gear, 50cc–125cc semi-auto fitment, and an 18-piece assembly set.

A 41⁄2-inch metal clutch and 17-tooth drive gear give KuaJiGo buyers two concrete specifications for evaluating a semi-automatic replacement. The listing targets 50cc–125cc dirt bikes, ATVs, and go-karts, and its package list identifies a set containing 18 pieces for the repair.

The 17-tooth gear and 41⁄2-inch diameter offer useful comparison points against the clutch being replaced, while metal construction is specified for the assembly. KuaJiGo lists semi-automatic 50cc–125cc engines and names dirt bikes, ATVs, go-karts, and Taotao applications. The package list says the set contains 18 pieces, which gives buyers a clearer sense of included parts than an assembly-only title. The supplied facts do not itemize those pieces, so check whether the set covers the parts needed for your repair.

Skip it if you need an itemized parts list before choosing a kit; KuaJiGo states 18 pieces but does not identify each one.

A reasonable candidate for a compatible 17-tooth, 41⁄2-inch semi-automatic clutch application in the listed vehicle types. It suits buyers who can verify dimensions and do not require an itemized breakdown of the 18-piece set.

Listed on Amazon as: 17 Teeth Semi Automatic Clutch Assembly, High Performance Semi Auto Clutch Kit for 50cc to 125cc Engine Dirt Bikes ATV Go Kart with 4-1/2 Inch Metal Clutch for

#3 · Best 18-Piece Set

3. LHaefydore 17T Clutch

• Weight: 3.49 lb
• Package Dimensions: 5.51 x 5.12 x 2.76 in

Best for: Trail and track 17T replacements.

Why it ranks #3: Provides a 17-tooth gear, 4-1/2-inch diameter, 50cc–125cc semi-auto fitment, and an 18-piece assembly set.

LHaefydore pairs a 17-tooth drive gear with a 41⁄2-inch metal clutch, giving riders concrete specifications to compare for a semi-automatic replacement. Its listed 50cc–125cc range covers dirt bikes, ATVs, and go-karts, while the feature description highlights smooth engagement and power transfer.

The precision-engineered 17-tooth gear is described as supporting smooth engagement and efficient power transfer, connecting the gear specification to the stated riding benefit. Metal construction is presented as suited to heat and friction, while the 41⁄2-inch diameter gives another comparison point for the existing assembly. The stated application covers semi-automatic 50cc–125cc engines in dirt bikes, ATVs, and go-karts, including Taotao. Check clutch type and dimensions against the machine before selecting it.

Skip it if you need a clutch for an engine above 125cc; LHaefydore lists semi-automatic applications only through that displacement.

A candidate for trail or track riders replacing a compatible 17-tooth semi-automatic clutch on a 50cc–125cc machine. Its metal construction and stated diameter are useful checks, but it is not listed above 125cc.

Listed on Amazon as: 17 Teeth Semi Automatic Clutch Assembly, High Performance Semi Auto Clutch Kit for 50cc to 125cc Dirt Bikes ATV Go Kart, 4-1/2 Inch Metal Clutch with 17 Tooth Drive

#4 · Best Hardware Bundle

4. AuInLand 17T Clutch

• Weight: 1.53 kg

Best for: Complete-kit replacement shoppers.

Why it ranks #4: Lists a 17-tooth gear and 4.57-inch outer diameter; its complete kit includes gasket, bearings, spring, screws, bolts, washers, and spacers.

This AuInLand clutch pairs a 17-tooth gear with a stated 4.57-inch outer diameter, giving buyers two concrete checks for a compatible automatic-engine replacement. The complete kit also includes hardwares such as a gasket, bearings, spring, screws, bolts, washers, and spacers for the replacement job.

The 17-tooth drive gear and semi-automatic operation identify the clutch type, while the 4.57-inch outer diameter and 0.68-inch inner hole provide dimensions to compare against the existing part. Its stated application covers most 50cc–125cc ATVs, dirt bikes, and go-karts with automatic reverse engines. The included gasket, bearings, spring, screws, bolts, washers, and spacers make the package a broader parts set than a bare assembly, but the listing advises checking type before purchase.

Skip it if you need a manual-clutch assembly or your engine is outside the stated automatic reverse applications; this kit is for automatic engines.

Consider it for a compatible 50cc–125cc automatic reverse-engine ATV, dirt bike, or go-kart when included hardware is useful. Verify clutch type and the listed dimensions against the existing assembly.

Listed on Amazon as: Clutch Assembly 17 Teeth Fit For Auto 50cc-125cc Engine Dirt Bikes ATV Go-Kart Taotao Kazuma

#5

5. D-CYCLE 18T Clutch

• Weight: 3.8 lb
• Package Dimensions: 5.12 x 4.93 x 4.14 in

Best for: 18-tooth engine replacements.

Why it ranks #5: The 18-tooth assembly covers select 50cc–135cc engines, but buyers must confirm dimensions and fit because displacement alone does not ensure compatibility.

An 18-tooth drive gear separates this D-CYCLE semi-auto kit from the many 17-tooth options, making gear count the first useful screening point. It is listed for select 50cc–135cc horizontal engines in ATVs, quads, dirt bikes, pit bikes, and go-karts, including some TaoTao and Kazuma models.

The 18-tooth drive gear identifies this assembly for buyers whose existing clutch uses that count; the listing specifically warns that displacement alone does not establish fit. Its application spans select 50cc, 70cc, 90cc, 110cc, 125cc, and 135cc engines across several vehicle types. The product is described as a complete semi-automatic assembly for replacing a worn, slipping, or damaged clutch. Because the supplied text emphasizes checking dimensions, match the existing assembly rather than relying only on engine size or make.

Skip it if you have a 17-tooth clutch or cannot verify the existing assembly's dimensions; displacement by itself is not enough to establish fit.

A targeted option for riders whose compatible semi-automatic engine requires an 18-tooth clutch. Its wide vehicle list is useful for screening, but confirm gear count and dimensions rather than choosing by displacement alone.

Listed on Amazon as: 18 Teeth Semi Auto Clutch Kit for 50cc-135cc ATV Dirt Bike with Tool

#6

6. CLEO 17T Clutch

• Weight: 3.47 lb
• Package Dimensions: 5.35 x 5.28 x 2.68 in

Best for: 17-tooth semi-auto owners.

Why it ranks #6: Clearly identifies a 17-tooth drive gear for semi-automatic 50cc–125cc engines and specifically warns buyers to check pictures and measurements.

CLEO makes the gear-count boundary explicit: this assembly uses 17 teeth and is not the 18-tooth version. That distinction gives owners a direct first check when replacing a clutch on a stated semi-automatic 50cc–125cc engine used in dirt bikes, ATVs, or go-karts.

The 17-tooth drive gear and semi-automatic designation identify the intended clutch type, while the listed 50cc–125cc range provides a displacement screen. CLEO also advises checking pictures and measurements, which is especially relevant because the listing explicitly distinguishes this assembly from an 18-tooth clutch. Its named vehicle uses include dirt bikes, ATVs, and go-karts, with TaoTao and Kazuma in the title. Buyers can use the gear count and existing-part measurements to avoid selecting the wrong variant.

Skip it if you need an 18-tooth clutch; CLEO explicitly identifies this assembly as 17-tooth, so the gear count is a decisive mismatch.

Choose it as a candidate for a compatible 17-tooth semi-automatic 50cc–125cc application. It suits owners who can check the existing gear and measurements; it is not the choice for an 18-tooth setup.

Listed on Amazon as: CLEO Clutch Assembly 17 Teeth For Semi Auto 50cc-125cc Engine Dirt Bikes ATV Go-Kart Taotao Kazuma

#7

7. TRKIMAL 17T Clutch

• Weight: 3.32 lb
• Package Dimensions: 5.94 x 4.53 x 3.39 in

Best for: Small-engine 17T replacements.

Why it ranks #7: States 17-tooth semi-automatic fitment across 50cc–135cc applications and cautions that it is not for manual-style clutches.

TRKIMAL specifies a 17-tooth gear and explicitly rules out manual-style clutches, making clutch type a crucial first filter. Its listed engine sizes extend from 50cc to 135cc across dirt bikes, ATVs, quads, and go-karts, while the features narrow fit to semi-automatic engines.

The 17-tooth drive gear gives a direct comparison point with the old clutch, and the semi-automatic requirement distinguishes this part from a manual-style assembly. TRKIMAL lists 50cc, 110cc, and 125cc in its fit feature, while the title also names 70cc, 90cc, and 135cc applications. That breadth can help screen candidate machines, but the listing's instruction to check type remains important: engine size alone does not resolve whether the clutch design matches.

Skip it if you have a manual-style clutch; TRKIMAL specifies semi-automatic use, regardless of whether the engine size appears in its range.

A candidate for owners of a matching 17-tooth semi-automatic engine across the listed small-vehicle types. Check the clutch style and existing gear count first, since this assembly is expressly not for manual-style setups.

Listed on Amazon as: Semi Auto Clutch Assembly 17Teeth For 50cc 70cc 90cc 110cc 125cc 135cc Engine Dirt Bikes ATV Quad Go-Kart Taotao Kazuma (17Teeth)

#8

8. hauertzx 17T Assembly

• Weight: 3.52 lb
• Package Dimensions: 5.39 x 5.39 x 2.56 in

Best for: 17-tooth accessory-kit buyers.

Why it ranks #8: Advertises a 17-tooth semi-automatic assembly with accessories for 50cc–135cc vehicles, but supplies few further specifications.

The 17-tooth semi-automatic assembly is listed with accessories and applications spanning 50cc through 135cc, giving owners a broad starting point for a compatible replacement. Its named vehicle categories include ATVs, quads, go-karts, and dirt bikes, with Roketa, Kazuma, JCL, NST, SUNL, and Taotao among the listed makes.

This listing identifies a 17T semi-automatic clutch assembly and names engine sizes from 50cc to 135cc, allowing buyers to screen for the stated gear and displacement range. Its application list spans ATV, quad, go-kart, and dirt-bike engines, and it specifically names several makes, including Roketa, Kazuma, JCL, NST, SUNL, and Taotao. The title also says accessories are included, which may suit a replacement where accessory pieces are wanted; no dimensions or accessory inventory are supplied here.

Skip it if you need published diameter measurements or a specific accessory inventory before selecting a replacement; this listing does not provide either detail.

Consider this assembly if your machine matches the listed 17T semi-automatic application and named engine or vehicle range. It may suit buyers seeking accessories, but the listing does not itemize them or give clutch dimensions.

Listed on Amazon as: 17T Semi Automatic Clutch Assembly with Accessories for 50cc 70cc 90cc 110cc 125cc 135cc ATV Quad Go Kart Dirt Bike Engine,Powersports Clutches for Roketa Kazuma JCL NST SUNL Taotao (17T)

#9

9. WhatApart 17T Clutch

Best for: Broad small-engine 17T fit.

Why it ranks #9: Lists a 17-tooth semi-automatic clutch for 50cc–125cc engines and dirt bikes, but provides little detail for checking fit.

WhatApart's 17-tooth semi-automatic clutch covers a stated spread from 50cc through 125cc, including 70cc, 90cc, and 110cc engines. Its named uses include dirt bikes, pit bikes, ATVs, go-karts, and quads, giving owners several vehicle categories to screen against their application.

The 17-tooth specification provides a straightforward way to compare this assembly with the existing clutch before considering the listed engine range. WhatApart names 50cc, 70cc, 90cc, 110cc, and 125cc engines, alongside dirt bikes, pit bikes, ATVs, go-karts, and quads. That broad category list can help identify a candidate application, but the supplied listing does not give dimensions or further engine-type details. Buyers should therefore treat displacement and vehicle category as initial checks, not full fit confirmation.

Skip it if you need diameter, hole, or mounting measurements to compare before buying; this listing supplies no such dimensions.

Consider it for a 17-tooth replacement when your dirt bike, pit bike, ATV, go-kart, or quad falls within the listed engine range. Its sparse fit details make direct measurement comparison important.

Listed on Amazon as: 17 tooth semi-auto clutch for 50cc 70cc 90cc 110cc 125cc engine Dirt Bikes Pit Bikes

#10

10. Sorandy Automatic Clutch

• Weight: 2.11 lb
• Package Dimensions: 5.47 x 4.57 x 1.5 in

Best for: Chinese horizontal-engine repairs.

Why it ranks #10: Its stated fitment is Chinese automatic engines, generally 50cc–110cc, rather than the semi-automatic assemblies that dominate this roundup.

A 102mm outer diameter and two stated hole diameters—17mm and 15mm—give this Sorandy clutch useful measurements for a replacement comparison. Its listed fit covers common four-stroke horizontal-cylinder Chinese engines in dirt bikes, ATVs, pocket bikes, mini choppers, and karts from 50cc to 110cc.

The aluminium-alloy construction is described as wear-resistant, giving buyers a material detail to weigh for a replacement part. The 102mm outer diameter and 17mm and 15mm hole diameters provide specific measurements for checking the old clutch, while the 55mm screw-hole spacing adds another fit reference. Sorandy lists common four-stroke horizontal-cylinder Chinese automatic engines across several small-vehicle types. Although the description calls installation simple, the supplied dimensions remain important for matching the intended engine and mounting points.

Skip it if you have a manual-style clutch or an engine outside the stated Chinese automatic applications; the listed measurements target specific mounting arrangements.

A possible replacement choice for a Chinese 50cc–110cc automatic horizontal-cylinder engine when the listed dimensions match. It suits several small-vehicle categories, but buyers should compare hole sizes and screw spacing before installation.

Listed on Amazon as: Auto Clutch Kit, ATV Automatic Clutch with Lid, Automatic Clutch Assembly for Chinese 50cc to 110cc Dirt Bikes, ATVs, Super Pocket Bikes, Mini Choppers, Kart