This is Power upgrade kit 70cc. 2003 - 2011 Yamaha Zuma 50 YW50 2 stroke engine. 1x 47mm big bore kit with cylinder head.
1x piston kit (10mm wrist pin). 1x Hand Made Hi-performance race pipe.The exhaust pipe is design for cylinder upgrade from 70cc to 100cc. Exhaust header diameter is 24mm. Preminum quality parts from Taiwan. This exhaust will for following model.
YAMAHA Horizontal type 2 stroke engine. Performance parts not accept return.