85CC BIG BORE CYLINDER KIT XR50 CRF50 Z50R 1982-2022
 
 
THIS WORKS TO CONVERT A 50CC TO A 85CC DISPLACEMENT ON THE FOLLOWING HONDA MODELS.

ALL XR50'S

ALL CRF50'S

Z50R 1982 THRU 1999

YOU MUST USE A STOCK XR50/CRF50 HEAD AND CRANK WITH THIS KIT

A BIGGER MAIN JET PROBABLY NEEDED,, IF YOU KEEP THE STOCK CARB ??
 
S1366/S1422/S1420