CY +2mm Stuffer Stroked Crank set

CY - Chung Yank  +2mm Stuffer Stroker crank option upgrade part for all CY engines increases the cc's of your motor.
Gives 30mm stroke - +2mm longer than stock 28mm stroke. Built in stuffer reduces crankcase volume, increasing primary compression. Be sure to check your squish clearance after installing this crankshaft to prevent engine damage
Forged, heat treated, and ground. Journal diameter same as stock G230RC crank size.

Fits Zenoah G23LH / G230RC / G260RC.
CY - Chung Yang CY23RC / R230 / CY26RC / R260 / CY27RC / R270 / GP290 / F270 /  CY29RC engines.
Note: May require modifications to the piston for proper journal clearance on the piston skirt.
Also clearnce in Cylinder head is needed for the extra crank length clearance i.e May require cylinder modifications and/or additional gaskets for install..

Fits directly into the CY29RC engine with no modifications (the CY29RC uses a 30mm stroke crankshaft in stock form)

Squash clearance ~ 0.5mm (0.02in)