+6.2mm stroker crankshaft
2009 to 2018 zuma 125, +6.2mm stroker crank for our RC 175, 218cc kits. Drop in crank, no engine block modifications needed. Comes with new crank bearings, longer timing chain, longer cylinder studs. Designed to work with taller cylinders. If you have a short standard cylinder a cylinder spacer is needed (NOT INCLUDED). Please contact us for more info on proper installation.