Yamaha Raptor 660 motor,engine "686" big bore kit THIS PRICE IS WITH AN EXCHANGE CYLINDER w/o add $150.00 

Upgrade your Yamaha Raptor from a 660 to a 686 with this kit!
This is a Looney Tooners Performance kit, it comes with:

• Wiseco Piston 11.5:1  OR JE 10.75:1
• Cometic Gasket Set for 102 mm bore
• Cylinder BORED & HONED*

Please read: This is a cylinder exchange price, you must send us a usable cylinder. 

If you do not have a usable cylinder the price is $565.00    

w/ Cylinder Exchange:
Your Price: $415.00.  

We can include a Hot Cam either stage I, II or III for an additional $179.00  and a HOT CRANK 4mm stroker crank for and additional $369.00. We can do porting, big valves, carb upgrades to total engine builds up to 80 Hp.

 CALL OR EMAIL US IF YOU HAVE ANY QUESTIONS! WE'LL ALSO HELP YOU WITH ANY TECHNICAL QUESTIONS YOU MAY HAVE. 530-365-3886