Fit For Zongshen Z155 Kick Start Gears For 150cc 160cc Pit Dirt Bike Motorcycle Engine Parts Fit For Zongshen Z155 150cc 160cc For Pit Dirt Bike gears Fit For tooth grinding to reduce startup friction noise Stable meshing structure delivers smooth kick rotation reliable cold start Standard dimension matching engine case, install without or Complete matching gear set simplifies engine operations Strong anti-impact structure withstands frequent kick operation during off-road riding