This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

This exhaust muffler and its matching expansion kit form one of the best-performing sets on the market for your motocross bike.

A single ring graphite piston that fits into your original cylinder.

An original quality piston, ideal for cylinder maintenance, combining reliability, performance and durability.