YYCKE 28mm High-Performance Exhaust Silencer Kit for 90–125cc Pit Bikes — 45mm Mount, Complete Bolt-On Assembly

YYCKE 28mm high-performance exhaust muffler kit is a complete replacement silencer and head pipe assembly designed to fit many 90cc–125cc dirt and pit bikes for improved sound and a cleaner, sportier appearance.

This bolt-on kit combines a 28mm head pipe, a compact muffler, gaskets and mounting hardware so you can replace a worn or stock exhaust without hunting for extra parts. The assembly matches common small‑bike manifolds and eye-to-eye dimensions (45mm) used across models like CRF50, SSR, Baja, Coolster, Piranha, Taotao and similar 90–125cc machines.

Will this exhaust fit my 90cc–125cc pit bike?

The kit is built around a 28mm inlet and a 45mm eye‑to‑eye mounting spacing, which aligns with many small-frame dirt and pit bikes. Match both the head pipe diameter and the muffler mounting distance on your bike to ensure compatibility.

• Inlet/head pipe diameter: 28mm
• Mounting eye-to-eye: 45mm
• Common compatible models: CRF50, SSR, Baja, Coolster, Piranha, Taotao DB10/DB14, TTR and similar 90–125cc bikes
• Includes mounting gaskets and screws for straightforward installation

How difficult is installation and what’s included?

Installation is designed to be straightforward for basic mechanical skills; the kit contains every part you need so no additional purchases are required. Standard tools like wrenches and a socket set are typically all that’s required to swap the old system for this one.

• Complete kit: muffler, head pipe, metal clip, black rubber gasket, two extra gaskets, screw kit
• Designed to follow original mounting points and fitment style
• Expect about 30–60 minutes for replacement on most bikes

What changes will I notice in sound and appearance?

The muffler refines exhaust noise and reduces harsh odors by routing gases through an internal filter element, producing a cleaner, more tuned tone without aggressive volume spikes. Visually, the compact silencer gives the bike a more modern, sporty look compared with many stock units.

• Sound: smoother, filtered exhaust note
• Appearance: compact silencer for a sportier profile
• Durability: built to withstand typical off‑road conditions

Who is this for? Riders who own small-displacement dirt, pit, or youth bikes and want a ready-to-install exhaust upgrade that improves tonal quality and refreshes the bike’s styling. It’s ideal for owners replacing a damaged stock muffler or customizing appearance and sound without custom fabrication. Note: always verify fitment by measuring your bike’s inlet diameter and mounting spacing before purchasing to ensure proper compatibility.