The market for 51mm slip-on exhausts offers a range of universal-fit options designed to improve sound, weight, and performance for motorcycles, ATVs, dirt bikes, and street bikes. Below is a curated guide to five well-regarded slip-on exhausts with 51mm (2 inch) inlet compatibility, highlighting key features and fit Notes. The list focuses on stainless steel, titanium, and carbon fiber constructions that balance durability with effective sound modification.
Product Snapshot
- DREAPATS Universal Slip On Modified Exhaust Mufflers with Silencers — 51mm Inlet, Stainless Steel (Black)
- PACEWALKER Motorcycle Slip On Muffler — 38-51mm Inlet, Titanium (Removable DB Killer)
- Motorcycle Exhaust Slip-on Muffler — Carbon Fiber, 51mm, Universal Fit (Black)
- Universal 1.5-2″ Inlet Hexagon Exhaust Muffler — 38-51mm, Aluminum/Hardware Included
- POSENG 1.5-2″ Inlet Slip On Exhaust — Titanium Alloy, 38-51mm, With DB Killer
Table indicates compatibility, materials, and notable features to help narrow choices quickly for enthusiasts seeking a balanced blend of sound, aesthetics, and install practicality.
DREAPATS Universal Slip On Modified Exhaust Mufflers
The DREAPATS muffler is constructed from stainless steel, emphasizing heat resistance and anti-corrosion properties for longevity in varied riding environments. It fits 51mm/2 inch link-pipe or downpipe, with a note that if the muffler is 38-51mm/1.5-2 inch, part modification and welding may be required for compatibility. This model includes complete accessories such as a DB Killer/Baffle, springs, hooks, stable clamps, and a universal connected pipe, simplifying installation for a wide range of bikes and scooters.
Key considerations include the approximate weight change, the potential need for minor fabrication on certain setups, and the impact of the included DB Killer on sound levels. Overall, it targets riders who want a robust stainless option with an adaptable mounting package and a straightforward install process.
PACEWALKER Slip On Muffler — Titanium Inlet, 38-51mm
The PACEWALKER slip-on uses a titanium alloy body with a stainless steel connector, combining light weight with durability. It features a removable DB killer for adjustable sound profiles and works with universal 38-51mm inlet exhaust systems. The overall length is 365mm, and the connection accommodates 38-51mm slip-on installations, making it suitable for a broad range of street bikes, sport motorcycles, scooters, and ATVs. This option emphasizes acoustic versatility and a premium finish, appealing to riders seeking a higher-end aesthetic and configurable sound without exhaustive modifications.
Motorcycle Exhaust Slip-On — Carbon Fiber, 51mm Inlet
This carbon fiber slip-on is designed for 51mm inlet applications, compatible with bikes such as Z900, GSXR750, and CBR650 among others. It balances aesthetic appeal with practicality, offering an 8.26 inch (210 mm) overall length and a 2.0 inch (51mm) connection diameter. The product highlights a straightforward slip-on mounting system and includes spring pullers and fixing rings to facilitate installation. The carbon fiber exterior also provides a sleek, sport-oriented look combined with durable performance in varied riding conditions.
Universal 1.5-2″ Inlet Hexagon Exhaust Muffler
This hexagon-shaped universal muffler covers a 38-51mm diameter range, suitable for dirt bikes, street bikes, scooters, ATVs, and quads. The package includes the exhaust pipe plus hardware. Installation instructions are not included, which may require familiarity with basic exhaust mounting techniques. This option emphasizes a robust metal construction with a compact form factor, making it a versatile choice for riders who enjoy modular upgrades and straightforward compatibility across multiple bikes.
POSENG 1.5-2″ Inlet Slip On Exhaust with DB Killer
POSENG offers a stainless and titanium alloy construction with a removable DB killer, designed for 38-51mm exhaust pipes. The 400mm length provides a balanced profile for street and sport motorcycles, scooters, and dirt bikes. The DB killer allows for a deeper and quieter tone when needed, with more aggressive sound when removed for larger displacement engines. This option emphasizes corrosion resistance and a versatile acoustic profile, appealing to riders who value customizable sound without sacrificing durability.
PACEWALKER Slip On Muffler — Plating Finish, 38-51mm
This PACEWALKER model features a stainless-steel sleeve with a plating finish designed for aesthetic appeal and corrosion resistance. The detachable silencer supports different sound profiles, while the plating process enhances the overall appearance and adds durability. It is compatible with any motorcycle or scooter using 38-51mm exhaust pipes, making it a flexible upgrade for riders who want both style and performance without sacrificing compatibility.
Exhaust Muffler Carbon Fiber 1.5-2″ Inlet with DB Killer
This option provides an aluminum body with a stainless steel connector, a removable DB killer, and a 365mm length with a 51mm slip-on connection. A universal fit for street and sport motorcycles, scooters, and other bikes with 38-51mm exhaust pipes, it emphasizes a high-quality finish and practical installation, suitable for riders who want a less bulky, sport-oriented slip-on with a quick upgrade path.
Buying Guide: Key Purchase Considerations
- Fitment and Inlet Diameter: Confirm 51mm (2 inch) inlet compatibility and verify whether your exhaust link-pipe or downpipe requires any modification or welding. Some universal options are listed for 38-51mm pipes and may need adjustments depending on the bike model.
- Material and Durability: Stainless steel offers corrosion resistance and longevity; titanium reduces weight but often comes at a higher cost; carbon fiber provides a premium look with good heat management. Consider your riding conditions and climate when selecting material.
- Sound Profile and DB Killer: If you want a quieter ride, opt for units with a removable DB killer or a built-in silencer. If you prefer a louder, more aggressive tone for track-ready appeal, ensure removal is straightforward and compliant with local noise regulations.
- Installation and Accessories: Look for complete accessory kits (springs, clamps, brackets, and pipes) to simplify mounting. Some products include a universal connected pipe, while others require separate components.
- Weight, Balance, And Aesthetics: Slip-ons can impact weight distribution and the overall look of the bike. Consider whether you want a sleek carbon fiber finish, a polished plating, or a bold black stainless style to match your bike’s visual theme.
- Warranty And Support: Verify any warranty terms, return policies, and compatibility notes with your motorcycle’s emissions or noise requirements. Some sellers offer guidance on compatibility across multiple models.
- Noise Regulations: Local noise laws may affect the permissible exhaust sound level. If you commute in urban areas, you might prefer adjustable DB killers or silencers to stay within limits without sacrificing performance.
Overall, the 51mm slip-on category provides versatile upgrade paths for riders who want enhanced sound, a sportier appearance, and easier installation. Whether prioritizing weight savings, durability, or a distinctive finish, the options above cover a broad spectrum of preferences and bike types.