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THIS CRANK USES THE 69MM TALL CYLINDER, WITH 84 LINK CAM CHAIN (IF BUILDING A STOCK 50 OR 70 ENGINE) YOU WILL NEED LOTS OF OTHER PARTS TO MAKE IT WORK IF YOUR BORE IS 47MM, THIS WILL MAKE YOU A TRUE 90CC ENGINE UP FROM 85CC IF YOUR BORE IS 52.4 MM, THIS WILL MAKE YOU A TRUE 111CC ENGINE UP FROM 107CC IF YOUR BORE IS 54MM, THIS WILL MAKE YOU A 117CC ENGINE

THIS WILL REPLACE THE 49.5MM STOCK CRANKS IN LIFAN OR ZONGSHEN 90CC AND 110CC ENGINES.

COMES FULLY ASSEMBLED WITH ALL BEARINGS, READY TO INSTALL.

51mm STROKER_CRANK FITS LIFAN_90CC/110CC 51mmCRANK$49.99