GREHUA 28mm Exhaust Muffler Kit for 50-125cc Dirt Bikes — Complete Metal Replacement with Heat Shield

GREHUA 28mm Exhaust Muffler Kit is a complete replacement exhaust system designed to fit many 50–125cc pit and dirt bikes, providing durable metal construction and a 28mm inlet for straightforward installation.

This kit includes a muffler, header pipe, mounting hardware and a heat shield wrap so you get a ready-to-install assembly for compatible pit bikes and small dirt bikes. Built from high-quality metal with professional welding, the GREHUA kit aims to deliver a reliable, OEM-replacement style part for common Chinese and Japanese small-displacement motorcycle models.

Which motorcycles will this 28mm muffler fit?

The GREHUA muffler is engineered for broad compatibility across 50cc to 125cc platforms that use a 28mm inlet. It lists fitment with multiple models including SSR110, SSR125 and common pit-bike brands, but it is not compatible with all variants (for example, not for Apollo RFZ 125 or some Honda models).

• Connection head inside diameter: 28mm (1.1") — confirm your header size before ordering.
• Common fits: CRF50/CRF50F, XR50, SSR110, SSR125, Taotao ATK125A, Apollo 110cc (check model specifics).
• Also fits many Chinese brands: Baja, SDG, TTR, YCF, IMR, BSE, DHZ, Atomik, Kayo, Piranha, Zongshen, Rocketa, Coolster, Lifan and more.

How easy is it to install and what’s included?

This kit is sold as a complete assembly so you won’t need to source extra accessories to mount it. Installation is straightforward for anyone familiar with small bike exhaust swaps; basic hand tools and the supplied hardware are usually sufficient.

• Included: 1 muffler, 1 exhaust header pipe, 1 metal clip, 1 set of screws, 1 heat shield wrap.
• Eye-to-eye length: 45mm (1.77") — check mounting points for fitment.
• Recommended: inspect exhaust gaskets and use anti-seize on bolts during installation.

What materials and build quality can I expect?

GREHUA uses quality metal and professional welding on this muffler kit, designed for durability under normal riding conditions. The finish resists routine wear; the included heat shield wrap helps protect surrounding components and reduce heat transfer.

• Construction: heavy-gauge metal body with welded seams for structural strength.
• Heat protection: supplied heat shield wrap to reduce radiated heat and protect plastics.
• Complete unit: sold as a full assembly rather than individual parts, reducing fitment guesswork.

Will this change how my bike performs or sounds?

The GREHUA muffler is intended as a replacement part and may slightly alter exhaust tone and backpressure compared to the original. It’s not marketed as a high-performance aftermarket silencer; changes in sound and throttle response depend on your bike’s current setup and tuning.

• Tone: expect a modified exhaust note relative to stock, subject to bike and header routing.
• Performance: any gains or losses depend on overall exhaust and intake condition; no guaranteed power improvements.
• Tuning: if precise performance is required, consider carburetor or ECU adjustments after installation.

Who is this for: This GREHUA 28mm Exhaust Muffler Kit is aimed at owners of 50cc–125cc pit bikes and small dirt bikes who need a direct, durable replacement exhaust assembly. Choose this kit if your bike accepts a 28mm inlet, you want a complete hardware package for straightforward installation and you prefer a robust welded-metal construction rather than piecing together separate components. If you’re unsure about fitment, compare the supplied dimensions to your bike’s header and mounting points or contact the seller for help.