This 108mm big bore kit is a bolt on addition to any late generation 690 Enduro and on the latest generation of 690 the displacement goes from 692cc to 733cc. This kit is designed to be easily installed with OEM type fitment. Piston weight is not stock, this kit will increase vibration, we highly recommend having your crank rebalanced.
- Kit Includes; Piston complete, cylinder, head gasket, base gasket, and new cylinder head bolts and a manual cam chain tensioner
- If you select to send a core, your order will be held until that core is received, no exceptions.
See dyno chart for improvements
Only fits the Gen 5 engine with the counterbalancer in the head.