A properly chosen exhaust upgrade can improve throttle response, flow, and overall engine feel, while also influencing weight, reliability, and the bike’s look. This guide highlights five aftermarket exhaust options designed for popular dirt bikes and pit bikes from 50cc to 125cc. Each pick balances fitment, build quality, and install ease, helping riders tune power delivery for racing, trail riding, or casual cruising. The selections emphasize complete systems, versatile slip-ons, and maintenance-friendly parts, offering practical choices for a wide range of riding styles.
| Product | Brand | Key Benefit |
|---|---|---|
| YYCKE 28mm Exhaust Muffler Kit | YYCKE | Easy bolt-on upgrade for 90cc–125cc dirt bikes with included hardware |
| RedCap Muffler Exhaust Assembly System | RedCap | Complete kit with header pipe and mounting straps for a full system upgrade |
| FVRITO 28mm Exhaust Muffler Silencer | FVRITO | Lightweight, durable muffler with precise 28mm mounting for 50cc–125cc bikes |
| LEIMO KPARTS Carbon Slip On Muffler | LEIMO KPARTS | Universal fit 38–51 mm pipes with carbon fiber look and tunable sound |
| HIAORS Exhaust Crush Gasket Set | HIAORS | 5-piece gasket kit for reliable exhaust sealing on 50cc–160cc bikes |
YYCKE 28mm Exhaust Muffler Kit
YYCKE’s 28mm High Performance Exhaust Muffler Kit is designed for 90cc, 110cc, and 125cc dirt bikes, featuring a 28mm head and a 45mm eye-to-eye measurement for straightforward installation. The upgrade can enhance the motorcycle’s appearance while delivering durable construction compatible with stock installations. The kit includes the exhaust muffler, exhaust head pipe, a metal clip, a black rubber gasket, two gaskets, and a screw kit, ensuring all necessary mounting hardware is present. This configuration supports a clean bolt-on upgrade for OEM-style fitment.
- Fitment: 28mm head, 90cc–125cc Dirt Pit Bikes (CRF50, SSR, Baja, Coolster, Piranha, Taotao, etc.)
- Includes: Muffler, head pipe, clip, gaskets, and screw kit
- Durable construction and easy installation for a factory-like upgrade
RedCap Muffler Exhaust Assembly System
RedCap’s Muffler Exhaust Assembly System provides a complete upgrade package for 125cc dirt bikes such as X15, X16, and X18 models from 2019 to 2022. The kit includes a header pipe, muffler, mounting strap, and an insulator strap, delivering a straightforward bolt-on installation that can improve exhaust flow and reliability. With a full assembly approach, riders can replace the entire exhaust path for better performance and a cohesive look on the bike’s rear end.
- Includes: Header pipe, muffler, mounting strap, insulator strap
- Designed for 2019–2022 Apollo/125cc dirt bikes (X15, X16, X18)
- Balanced upgrade with easy installation and reliable fittings
FVRITO 28mm Exhaust Muffler Silencer
FVRITO’s 28mm exhaust muffler silencer is aimed at a broad range of dirt bikes, including 50cc, 110cc, and 125cc Chinese dirt pit bikes and related QUADs. Made from aluminum, it offers a mounting hole distance of 28mm and overall dimensions that suit many stock exhaust ports. The design emphasizes compatibility across multiple models while providing a noticeable improvement in exhaust flow and sonic character. This muffler is a practical, durable upgrade for riders seeking a balance of performance and affordability.
- Fitment: Most 50cc–125cc Chinese dirt pit bikes and QUADs
- Material/Size: Aluminum; mounting hole distance 28mm; length 244 mm; width 85 mm
- Durable construction with a straightforward bolt-on install
LEIMO KPARTS Carbon Slip On Muffler
LEIMO KPARTS offers a universal slip-on muffler with a carbon fiber aesthetic over aluminum and stainless steel, designed to reduce overall weight and improve corrosion resistance. It is compatible with pipes ranging from 38 mm to 51 mm, thanks to a welded stainless adapter that enables a seamless fit across a variety of bikes. A removable DB killer lets riders adjust sound levels, from stealthy to louder setups, depending on preference and local regulations. This makes it a flexible option for riders seeking a compelling balance of sound and performance.
- Material: Carbon fiber finish over aluminum and stainless steel
- Universal fit: 38–51 mm pipes via welded adapter
- Removable DB killer for adjustable sound
HIAORS Pit Dirt Bike Exhaust Crush Gasket Set
HIAORS offers a 5-piece crush gasket set sized 32×24.5mm, designed for dirt bikes ranging from 50cc to 160cc. The kit supports multiple models such as SSR, Tao Tao, DB-14, Hellcat, Apollo RFZ, Piranha, and Lifan Xpro, among others. The set provides essential gaskets for reliable exhaust sealing and leak prevention, contributing to longer exhaust system life and consistent performance across diverse engine configurations.
- Size: 32×24.5×5 mm; Fits 50–160cc dirt bikes
- Includes five crush gaskets to cover common exhaust seals
- Versatile compatibility with popular pit bike models
Buying Guide
Choosing the right exhaust system for a dirt bike involves assessing fitment, intended use, and maintenance needs. Below are practical considerations to help compare options across the five picks and similar aftermarket components.
Key Purchase Considerations
- Fitment and engine size: Verify whether the exhaust is intended for 50cc, 90cc, 110cc, or 125cc engines, and whether it is model-specific or a universal fit.
- Type: Decide between a full exhaust assembly and a slip-on muffler. Full systems may improve flow more significantly, while slip-ons save weight and simplify installation.
- Material and weight: Carbon fiber, aluminum, and stainless steel each offer different weight and corrosion profiles. Lighter units can improve throttle response but may cost more.
- Sound and regulation: Consider the desired sound profile. Some exhausts include a removable DB killer to tune volume, especially for riding in areas with noise restrictions.
- Hardware and warranty: Check included mounting hardware and whether a dealer warranty or return policy applies if fitment isn’t perfect.
Product Types And Fitment
- Complete systems vs. slip-ons: Full assemblies (like RedCap) provide a full upgrade path, while slip-ons (like LEIMO KPARTS) offer weight savings and customization without reworking the entire exhaust path.
- Universal vs. model-specific: Universal designs offer broad compatibility but may require adapter parts, whereas model-specific kits align more closely with OEM mounting points and port sizes.
Sound, Weight, And Durability
- Sound tuning: A DB killer or muffler design influences ride comfort and neighbor-friendly operation, particularly in residential areas or tracks with noise rules.
- Durability: Look for corrosion resistance, reinforcing hardware, and gasket integrity to minimize leaks and maintenance.
Installation And Maintenance
- Installation ease: Some kits come with all necessary hardware and instructions for a straightforward bolt-on upgrade; others require additional adapters or professional fitting.
- Maintenance: Regular inspection of gaskets, clamps, and mounting straps preserves performance and avoids exhaust leaks that could affect power delivery.
Real-World Scenarios
Racers may favor higher-flow exhausts with tunable sound, while trail riders might value durability, quiet operation, and ease of maintenance. For frequent washing or exposure to water, consider exhaust plugs or plugs with clear visual reminders to remove before starting when applicable, and always verify compatibility with your riding environment and local regulations.