686 Big Bore Kit


Fits: Raptor 660 01-05, Grizzly 660 02-07

Part Number: bbk-686
big bore kit

SKU: bbk_raptor686 Category:


686 Big Bore Kit

+2mm big bore kit, includes JE Pistons complete piston kit and a Cometic top-end gasket kit.  This kit is a nice ‘wake-up’ call for your Raptor or Grizzly 660.  Available in 2 different compression ratios.  This kit requires your stock cylinder to be bored and honed – if you’d like us to do that work, just contact us.

Additional information

Weight 3 lbs
Dimensions 10 x 10 x 10 in