High perfomance set for GY6 157QMB 152QMI engines. With this kit you can increase power to 170cc.
Set supplied with cylinder head 2 valve (big bore intrance and extrance), cylinder kit 58.5mm, camshaft A12 (6.0), carburetor, intake manifold, air filter, air filter collector, throttle cable, special bendix, variator, clutch bell, racing variator with rollers(9g), lightweight magneto, CDI.
It can be installed in any mechanic shop. Very easy to install, no need any tuning upgrade expirience, just standard work as for changing standard cylinder set.