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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 ??

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

@ STEEL 85CC_CYLINDER_KIT SLEEPER XR50_CRF50 Z50R_1982_TO_99 (MARKED_49CC) 7/17R (600024) temp out of stock 600024