2X Motorcycle Exhaust O-Ring 37.5x42.8x2.65 mm Compatible with Yamaha YZ65 2018-2024

Motorcycle exhaust O-ring. Designed for the expansion chamber joint, compatible with Yamaha YZ65 2018-2024, it seals the tube and maintains back pressure for a smooth 2-stroke response. Exhaust sealing ring. Precisely sized 37.5x42.8x2.65 mm, it fits between the tube and cylinder to reduce leaks, oil mist, and noise, promoting smooth power delivery during practice, racing, and weekend rides. 2-stroke O-ring. The heat-resistant rubber elastomer withstands temperature and vibration at the exhaust joint, limits sagging, and keeps the tube aligned and sealed during repeated servicing. Motorcycle service part. Ideal for resealing after top-end work, muffler swaps, or exhaust removal; speeds up reassembly and helps maintain clean operation, a stable idle, and crisp throttle response. track.
Dirt bike maintenance kit. Suitable for garage adjustments, race day spare parts and trail rides, compact rings easy to store for quick replacement of worn seals and to keep to the riding schedule.