Yamaha Raptor 660
780cc & 794cc Big Bore Engine Kit

These two engine kits are great for those who want a powerful and reliable bike at a lower cost than the moster 812cc engines. These engines can be setup for strict drag or dune applications in both high and low compression versions.

Kits Include:
+6mm BALANCED Crank, Piston Kit, Big Bore Sleeve, Bore, Honed and O-ringed cylinder, Bored Cases, Cam, Head Porting and modification, +1mm SS valves, HD valve springs, valve stem seals, Billet Intake manifold, and complete gasket kit.

(Parts only kits will require customer to send in their stock crank, head, cylinder, and cases for modification)

Pricing
Parts only 780cc and 794cc kit - $3510

Optional Upgrades

Lightened counter Shaft

Top End Drag Cam

39mm FCR Carb Kit (highly recommended)

Lock Up Clutch Kit (highly recommended)

K&N Filter Intake Kit