Athena 05-21 Yamaha YZ 125 LC 144cc 58mm Replacement Power Exhaust Valve - S410485303018

This kit includes all the components necessary for the complete overhaul of the Athena cylinder exhaust valve. The kit includes: the valve, the diaphragm, the springs for the valve control and all...

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.

This kit includes all the components necessary for the complete overhaul of the Athena cylinder exhaust valve. The kit includes: the valve, the diaphragm, the springs for the valve control and all...