YX & ZS Shift Drum Shim Upgrade
 
These shims sit between the shift drum shaft & the crank casing.
 
These shims are to adjust end float in the shift drum when building your engine.
 
Well sell a variety of thicknesses.
 
Fits Manual Shift Drum Shafts:
SHAFT DIAMETER = 13mm
 
Please Note:
Too much float will result in the engine jumping out of gear.
Too little end float could result in gearbox being tight and unable to select gear and somtimes neautral.
Picture for demo only.

Item Includes:
1x Shim Washer