727 Big Bore Kit


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

12:1 compression ratio

Part Number: bbk-727

Variation Part Number: bbk-727-12.1

SKU: bbk_raptor727 Category:


727 Big Bore Kit

+5mm big bore kit, includes JE Pistons complete piston kit, a big bore Sleeve and a Cometic top-end gasket kit.  This kit requires your stock cylinder to be sleeved, finish bored and honed AND your engine cases bored.  If you’d like us to do that work, just contact us.

Additional information

Weight 5 lbs
Dimensions 10 x 10 x 10 in