CJR Heavy Duty Clutch Spring - CRF110F Chains Sprockets This kit is to upgrade

This kit is to upgrade the cylinder head on stock YX/GPX 150 or 160 engines to our new Race Head V2

Weight savings is critical

the springs are 30% heavier than OEM springs

USFS Approved spark arrester included

CJR Heavy Duty Clutch Spring - CRF110F Chains Sprockets This kit is to upgradeIncrease the performance of your stock CRF110 clutch with improved clutch engagement and less slippage as you grab gear after gear by adding in the CJR upgraded clutch spring. A perfect budget friendly upgrade for both stock bore and big bore builds. Can only be used with OEM clutch, this will not work with the 6 spring clutch kits Installation is easy Once the clutch cover is removed, simply unbolt the 4 bolts holding the lifter plate, remove the OEM