A strong exhaust choice for a Low Rider ST starts with verified fitment, then balances muffler style, material, and included hardware; this shortlist suits riders comparing replacement mufflers with more extensive pipe options. The supplied listings do not confirm Low Rider ST compatibility for any product, so treat fitment as an essential check before ordering. The S&S MK45 mufflers lead this comparison because their listings specify motorcycle use and describe a stainless-steel baffle with fiberglass packing, while also citing a 7-horsepower gain.
Vance & Hines offers another muffler option, and a separate listing describes Dresser Duals as a full exhaust system. The mhanewv pipes are explicitly limited to forward-control models, a notable restriction for buyers checking a Low Rider ST.
Confirm model-year, control, and installation requirements with the manufacturer before choosing.
S&S Cycle MK45 Chrome Thruster is the leading option in this comparison because its listing identifies it for motorcycles and describes stainless-steel baffle construction with fiberglass packing, plus a claimed 7-horsepower gain. That does not establish fitment on a Low Rider ST: the supplied details do not name that model. Confirm the exact application and any required components with the manufacturer before ordering.
If compatibility is verified, its chrome finish and Thruster end cap make it a specifically described muffler choice.
Our Top Picks
Best OverallThe listing identifies motorcycle compatibility and specifies stainless-steel baffle construction, fiberglass packing, a chrome finish, and a claimed 7-horsepower gain.
View on Amazon
Best Black AccentS&S MK45 Chrome Black Thruster
This motorcycle muffler shares the MK45 listing's stainless-steel baffle, fiberglass packing, and claimed 7-horsepower gain, with a black Thruster end cap.
View on Amazon
Best Tracer End CapIts listing describes stainless-steel construction and fiberglass packing, a claimed 7-horsepower gain, and the distinct black Tracer end cap.
View on Amazon- Best 4.5-Inch Outlet Vance & Hines Torquer 450
Compare the Exhaust Options and Their Intended Uses
| # | Product | Weight | Material | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|---|
| 1 | 1. S&S MK45 Chrome ThrusterBest Overall | 14 lb | Stainless Steel | Motorcycle | View on Amazon |
| 2 | 2. S&S MK45 Chrome Black ThrusterBest Black Accent | 14 lb | Stainless Steel | Motorcycle | View on Amazon |
| 3 | 3. S&S MK45 Chrome Black TracerBest Tracer End Cap | 14 lb | Stainless Steel | Tractor | View on Amazon |
| 4 |  4. Vance & Hines Torquer 450Best 4.5-Inch Outlet | 28.7 lb | Stainless Steel | Motorcycle | View on Amazon |
| 5 |  5. Vance & Hines Dresser DualsChrome Dresser Duals upgrader | 19.2 lb | Metal | — | View on Amazon |
| 6 |  6. mhanewv LAF Exhaust PipesForward-control Harley customizer | — | — | — | View on Amazon |
Detailed Reviews: Best Exhaust For Low Rider St
#1 · Best Overall
1. S&S MK45 Chrome Thruster
- Weight: 14 lb
- Material: Stainless Steel
- Compatible with Vehicle Type: Motorcycle
Best for: All-chrome Thruster-end-cap shopper.
Why it ranks #1: The listing identifies motorcycle compatibility and specifies stainless-steel baffle construction, fiberglass packing, a chrome finish, and a claimed 7-horsepower gain.
Chrome end caps join the chrome finish on these S&S Cycle MK45 4.5-inch mufflers, making this the all-chrome Thruster configuration among the listed options. The description also specifies stainless-steel baffle construction, fiberglass packing, and a stated seven-horsepower gain.
The chrome finish and chrome Thruster end cap create a consistent appearance, while the 4.5-inch MK45 size identifies the muffler format. Stainless-steel baffle construction and fiberglass packing are the listed internal details. S&S describes a seven-horsepower gain, but supplies no test conditions in the provided information. The stainless-steel quiet baffle kit is sold separately; buyers should also check applicable state and local noise and emissions rules before ordering.
- 4.5-inch MK45 mufflers
- Chrome finish with chrome Thruster end cap
- Stainless-steel baffle construction
- Fiberglass packing
- The stainless-steel quiet baffle kit is sold separately.
Skip it if you prefer a contrasting black end cap; the S&S Cycle MK45 550-0619 uses a black Thruster cap instead.
A buyer wanting a coordinated chrome MK45 finish with Thruster end caps may favor this version. Consider the separately sold quiet baffle kit, and check local noise and emissions requirements before selecting it.
Full product details
| Brand | S&S Cycle |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Item Weight | 14 pounds |
| Manufacturer | S&S Cycle |
| Part Number | 550-0620 |
| Material | Stainless Steel |
| Additional Information | Important information |
Listed on Amazon as: S&,S Cycle S&S Cycle MK45 4.5" Mufflers Chrome, Chrome Thruster End Cap 550-0620
View on Amazon#2 · Best Black Accent
2. S&S MK45 Chrome Black Thruster
- Weight: 14 lb
- Material: Stainless Steel
- Compatible with Vehicle Type: Motorcycle
Best for: Chrome Thruster-end-cap buyer.
Why it ranks #2: This motorcycle muffler shares the MK45 listing's stainless-steel baffle, fiberglass packing, and claimed 7-horsepower gain, with a black Thruster end cap.
A chrome finish with a black Thruster end cap gives these S&S Cycle MK45 4.5-inch mufflers a defined styling combination. Their description states a seven-horsepower gain and specifies stainless-steel baffle construction with fiberglass packing, offering buyers both appearance and internal-construction details to weigh.
The 4.5-inch MK45 muffler size and stainless-steel baffle construction identify the main component, while fiberglass packing is also specified in the description. The chrome body and black Thruster end cap distinguish this version from other listed MK45 finishes and end-cap combinations. S&S states a seven-horsepower gain, without supplied test conditions. A stainless-steel quiet baffle kit is sold separately, and the listing calls for checking state and local noise and emissions requirements.
- 4.5-inch MK45 mufflers
- Chrome finish with black Thruster end cap
- Stainless-steel baffle construction
- Fiberglass packing
- The stainless-steel quiet baffle kit is sold separately.
Skip it if you need a quiet baffle included in the package, or cannot proceed without checking local noise and emissions rules.
This configuration fits buyers who want chrome MK45 mufflers with black Thruster end caps and the listed baffle materials. Factor in the separately sold quiet baffle and verify applicable noise and emissions requirements.
Full product details
| Brand | S&S Cycle |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Item Dimensions | 31 x 11.75 x 6 inches |
| Item Weight | 14 pounds |
| Dimensions | 31 x 11.75 x 6 inches |
| Manufacturer | S&S Cycle |
| Part Number | 550-0619 |
| Material | Stainless Steel |
| Additional Information | Important information |
Listed on Amazon as: S&,S Cycle S&S Cycle MK45 4.5" Mufflers Chrome, Black Thruster End Cap 550-0619
View on Amazon#3 · Best Tracer End Cap
3. S&S MK45 Chrome Black Tracer
- Weight: 14 lb
- Material: Stainless Steel
- Compatible with Vehicle Type: Tractor
Best for: Chrome Tracer-end-cap shopper.
Why it ranks #3: Its listing describes stainless-steel construction and fiberglass packing, a claimed 7-horsepower gain, and the distinct black Tracer end cap.
A chrome finish paired with a black Tracer end cap distinguishes these S&S Cycle MK45 4.5-inch mufflers, giving a buyer a specific appearance combination to consider. The supplied description also states a seven-horsepower gain, while the stainless-steel baffle construction and fiberglass packing describe the muffler internals.
The 4.5-inch muffler size and stainless-steel baffle construction give buyers concrete component details, while fiberglass packing is part of the stated internal construction. The chrome finish and black Tracer end cap make the configuration specific for a coordinated exhaust appearance. The description claims a seven-horsepower gain, though no test conditions are supplied. A stainless-steel quiet baffle kit is sold separately, and the listing advises checking local noise and emissions rules before ordering.
- 4.5-inch MK45 mufflers
- Chrome finish with black Tracer end cap
- Stainless-steel baffle construction
- Fiberglass packing
- The stainless-steel quiet baffle kit is sold separately.
Skip it if you require an included quiet baffle kit or need confirmed local noise and emissions compliance before choosing these mufflers.
A rider seeking chrome MK45 mufflers with a black Tracer end cap may prefer this configuration for a distinctive finish combination. Consider the separately sold quiet baffle kit and check applicable noise and emissions rules.
Full product details
| Brand | S&S Cycle |
|---|---|
| Compatible with Vehicle Type | Tractor |
| Item Weight | 14 pounds |
| Manufacturer | S&S Cycle |
| Part Number | 550-0623 |
| Material | Stainless Steel |
| Additional Information | Important information |
Listed on Amazon as: S&,S Cycle S&S Cycle MK45 4.5" Mufflers Chrome, Black Tracer End Cap 550-0623
View on Amazon#4 · Best 4.5-Inch Outlet
4. Vance & Hines Torquer 450
- Weight: 28.7 lb
- Material: Stainless Steel
- Compatible with Vehicle Type: Motorcycle
Best for: Stainless slip-on buyer.
Why it ranks #4: The listing specifies stainless-steel construction and a 4.5-inch outlet connection, but does not provide a Low Rider ST fitment claim.
A 4.5-inch outlet defines these Vance & Hines Torquer 450 slip-on mufflers, giving buyers a clear outlet-size specification when choosing a replacement exhaust component. Their stainless-steel construction and slip-on format are the concrete details supplied; the listing identifies motorcycle use but does not specify compatible models.
The slip-on designation indicates a muffler replacement format rather than a complete exhaust system, which helps frame the installation scope. Stainless steel is the stated material, and the 4.5-inch outlet connection supplies a specific dimension for evaluating the downstream connection. At 28.7 pounds, the listed weight is also worth considering while handling the components. Vehicle compatibility is described only as motorcycle, so the supplied information does not establish fitment for a particular Low Rider ST configuration.
- Slip-on muffler format
- Stainless-steel construction
- 4.5-inch outlet connection size
- Motorcycle vehicle category listed
- The supplied fitment information identifies motorcycles generally, not specific compatible models.
Skip it if you need documented fitment for a particular Low Rider ST; this listing gives no motorcycle model applications to verify against.
These suit a buyer comparing stainless slip-on mufflers by outlet size and material, provided the specific motorcycle fit is established separately. The listing does not identify Low Rider ST compatibility or include further model application details.
Full product details
| Brand | Vance & Hines |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Included Components | Vance & Hines 46674 |
| Item Weight | 28.7 pounds |
| Manufacturer | Vance & Hines |
| Part Number | 46674 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Stainless Steel |
| Model Number | 46674 |
| Outlet Connection Size | 4.5 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov Proposition 65 Warning for California Consumers WARNING: Cancer – www.P65Warnings.ca.gov |
Listed on Amazon as: Vance & Hines Torquer 450 Slip-On Mufflers Black (46674)
View on Amazon#5
5. Vance & Hines Dresser Duals
- Weight: 19.2 lb
- Material: Metal
Best for: Chrome Dresser Duals upgrader.
Why it ranks #5: This is a more extensive chrome exhaust option; its description specifies 1.75-inch head pipes and full-coverage heat shields, but not Low Rider ST fitment.
A 2-1/8-inch, 220-degree full-coverage heat shield is the defining feature of these chrome Dresser Duals, intended to help keep the chrome from turning blue. The listing pairs that coverage with 1-3/4-inch head pipes and describes boosted performance and a throaty sound for a stock Harley-Davidson upgrade.
The full-coverage heat shield wraps across 220 degrees, with the supplied description stating that it helps prevent chrome discoloration. The 1-3/4-inch head pipes are identified as the performance and sound component, with the product described as producing a throaty sound. This is a Dresser Duals exhaust rather than a listed slip-on muffler, so buyers should consider the system format when planning an upgrade. Check local noise and emissions regulations; the listing states it cannot ship to California addresses.
- Dresser Duals exhaust format
- 2-1/8-inch, 220-degree full-coverage heat shield
- 1-3/4-inch head pipes
- Chrome finish
- The listing states this item cannot ship to California addresses.
Skip it if you need an exhaust shipped to a California address; the listing explicitly excludes shipment there.
A Harley-Davidson owner pursuing chrome Dresser Duals and broad heat-shield coverage may value this system’s stated configuration. Its fitment details are limited here, and California buyers face the listed shipping restriction.
Full product details
| Brand | Vance & Hines |
|---|---|
| Included Components | Vance & Hines 16799 |
| Item Dimensions | 45.7 x 18.3 x 8.3 inches |
| Item Weight | 19.2 pounds |
| Dimensions | 45.7 x 18.3 x 8.3 inches |
| Manufacturer | Vance & Hines |
| Part Number | 16799 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Metal |
| Model Number | 16799 |
| Outlet Connection Size | 1.75 inches |
| Additional Information | Important information |
Listed on Amazon as: Vance & Hines Dresser Duals Exhaust Chrome 16799
View on Amazon#6
6. mhanewv LAF Exhaust Pipes
Best for: Forward-control Harley customizer.
Why it ranks #6: Although the listing includes Softail models, it explicitly excludes mid-control models and requires forward controls, creating a significant fitment concern.
The 2-inch pipes include an 18mm O2 sensor port and a 12mm adapter, giving riders a sensor connection option while retaining a bare LAF-pipe setup. Their stated coverage spans many Softail and Sportster models, plus selected Dyna and custom builds, but control position is a decisive fit limitation.
The included flange kits and O2 adapters provide key installation pieces, while the built-in 18mm port accommodates the listed sensor connection options. Coverage includes 1984–2023 Softail models, 1986–2023 front-mounted Sportsters, and 1991–2017 front-mounted Dyna models. These pipes are for forward controls; mid-controls can obstruct them. Gaskets and mufflers are sold separately, and the supplied bracket may not suit every model, so plan for those component and mounting considerations before installation.
- 2-inch thickened pipe construction
- Built-in 18mm O2 sensor port
- 12mm O2 adapter included
- Flange kits included
- Gaskets and mufflers are sold separately, and the included bracket does not fit every model.
Skip it if you have mid-controls that obstruct LAF pipes, or need included mufflers and gaskets; this package supplies pipes and flange kits only.
A forward-control Harley owner seeking LAF pipes with O2-port options may find this package useful across its listed applications. Check control placement and bracket needs first, and account for separately sold gaskets and mufflers.
Full product details
| Brand | mhanewv |
|---|---|
| Color | black out |
| Included Components | (Note: Gaskets and mufflers are sold separately to accommodate Harley-Davidson standard parts), 2 x Black LAF Exhaust Pipes | 2 x Flange Kits | 2 x O2 Adapters |
| Manufacturer | mhanewv |
| Part Number | SDZG-056 |
| Manufacturer Warranty Description | 2 years manufacturer |
| Model Number | SDZG-056 |
Listed on Amazon as: 2"LAF Exhaust Pipes with Flange Kits for 1984-2023 Harley Sportster/Softail
View on AmazonAvoid the control-position fitment trap
Control position can rule out an exhaust even when a listing names a broad motorcycle family. The mhanewv LAF Exhaust Pipes listing covers Softail models but explicitly says they are only for forward-control models and not for mid-controls that interfere with the pipes. It also cautions that some models may need modifications and that the supplied bracket may not suit every bike.
The supplied product details do not establish the Low Rider ST’s exact compatibility with any of these options, so do not treat a Softail label alone as confirmation. Before buying, provide the seller or manufacturer with your exact model year, control configuration, and the product identifier.
Ask whether the complete system clears the controls and frame, whether its mounting points match, and whether extra parts or modifications are needed. A specific application confirmation is more useful than a broad family name.
Separate mufflers from complete exhaust systems
A muffler listing and a pipe-system listing do not necessarily describe the same installation scope. The S&S MK45 products and Vance & Hines Torquer 450 are presented as mufflers, while Vance & Hines Dresser Duals is described as an exhaust system with head pipes and heat shields. The mhanewv listing supplies two pipes, flange kits, and O2 adapters, but says gaskets and mufflers are sold separately.
That means the product title alone may not tell you what else your installation requires. Check what parts your current setup can reuse and what the listing actually includes before comparing these choices.
The mhanewv listing specifies a built-in 18 mm O2 sensor port and a 12 mm adapter, but that detail does not establish compatibility with your bike’s sensor or installation. Ask about included hardware and sensor requirements before ordering.
How to Choose a Low Rider ST Exhaust
Confirm exact model fit
Look for a manufacturer-confirmed application for your exact Low Rider ST model year and control layout before weighing finish or sound. None of the supplied listings explicitly names the Low Rider ST as compatible. The mhanewv LAF Exhaust Pipes listing covers Softail models but limits use to forward controls and excludes mid-controls; it also warns that some models may need modifications.
The S&S MK45 listings specify motorcycle use, while the other listings do not provide enough application detail here to verify fit. If you are considering pipes and your bike has mid-controls, the mhanewv listing’s stated restriction makes it a poor match unless the manufacturer confirms otherwise.
Whichever style you prefer, verify the exact application and mounting requirements before purchase.
Choose the exhaust scope
Decide whether you need mufflers alone or a more complete pipe assembly, and compare included parts accordingly. The S&S MK45 options and Vance & Hines Torquer 450 are listed as mufflers; the Vance & Hines Dresser Duals description identifies head pipes and heat shields. The mhanewv package includes two pipes, flange kits, and O2 adapters, but its listing says gaskets and mufflers are sold separately.
A rider replacing only mufflers may prefer to investigate the S&S or Torquer options, while someone planning a broader system change can investigate the Dresser Duals. These descriptions do not confirm what a particular bike needs, so compare them with your existing exhaust and ask whether additional hardware is required.
Compare construction and listed details
Use the listed material and design details to distinguish options, but do not assume they prove sound, durability, or fit. The Vance & Hines Torquer 450 specifies stainless steel and a 4.5-inch outlet connection. The S&S MK45 listings describe stainless-steel baffle construction and fiberglass packing, with chrome or black end-cap variations.
The Dresser Duals listing describes 1.75-inch head pipes and full-coverage heat shields. These specifications suit different comparison priorities: choose between finishes and end-cap styles for a muffler-focused change, or investigate pipe dimensions and heat shields when considering a broader system.
Ask the manufacturer to confirm any measurements or material details that matter for your specific installation.
Which Low Rider ST Exhaust Should You Choose?
Start by confirming exact fitment: none of these listings explicitly verifies compatibility with the Low Rider ST. If the manufacturer confirms the application, S&S MK45 Chrome Thruster is the strongest starting point for a motorcycle muffler, with stainless-steel baffle construction, fiberglass packing, and a chrome finish. Choose S&S MK45 Chrome Black Thruster or S&S MK45 Chrome Black Tracer if the black end-cap detail is your preference.
Vance & Hines Torquer 450 is another muffler option, with a specified 4.5-inch outlet connection. Consider Vance & Hines Dresser Duals if you are researching a system with head pipes and heat shields.
Avoid treating mhanewv LAF Exhaust Pipes as a fit just because the listing names Softail models: its forward-control-only restriction is an important concern.
Frequently Asked Questions
How can I confirm whether an exhaust fits my Low Rider ST model year and controls?
Confirm the exact application with the manufacturer before ordering, including your Low Rider ST model year and control setup. None of these supplied listings explicitly verifies Low Rider ST compatibility. Pay particular attention to the LAF pipes: their forward-control-only restriction may make them unsuitable for your controls.
Will changing the exhaust require an ECU tune or other engine adjustments?
The supplied product details do not establish whether a tune or other adjustment is required. Ask the exhaust manufacturer or a qualified technician about the exact exhaust and motorcycle combination, and follow their guidance before riding. Do not treat a claimed power gain as proof that tuning is unnecessary.
How can I check whether an exhaust meets local noise and emissions rules?
Check the rules that apply where the motorcycle is registered and ridden, then ask the manufacturer whether the exact exhaust configuration complies. The supplied details do not establish noise or emissions compliance for these products. Confirm any applicable requirements before buying or installing, rather than relying on appearance or a power claim.
How do I tell whether a listing is for mufflers or a broader exhaust system?
Read the product description for the included components and confirm the contents with the manufacturer. The supplied information identifies the Torquer 450 and MK45 options as mufflers, while the Dresser Duals are described as a system with head pipes and heat shields. The titles alone may not clarify every included part.
What should I verify before choosing an end-cap style?
First verify fitment; then choose among the listed end-cap finishes based on your preference. The MK45 options include Black Tracer, Black Thruster, and Chrome Thruster end caps, each with a chrome finish. The supplied details do not establish that any of these styles changes fitment, sound, or performance.
Final Words
Start by confirming exact Low Rider ST fitment and control clearance with the manufacturer; none of these listings explicitly confirms compatibility. If the application is verified, the S&S MK45 Chrome Thruster is the strongest starting point in this comparison, with described baffle construction and a claimed power gain. Consider the other MK45 end caps for appearance, the Torquer 450 as a muffler option, or Dresser Duals for a system with head pipes and heat shields.
