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Raptor 660 Big Bore Stroker 102 mil Cylinder +4 Crank Complete Motor Engine Kit


Compatible Vehicles
Submodel Year Make Model
YFM660R 2005 Yamaha Raptor 660R
YFM660RSE Special Edition 2005 Yamaha Raptor 660R
YFM660R 2004 Yamaha Raptor 660R
YFM660R Limited Edition 2004 Yamaha Raptor 660R
YFM660R 2003 Yamaha Raptor 660R
YFM660R 2002 Yamaha Raptor 660R
YFM660R Limited Edition 2002 Yamaha Raptor 660R
YFM660R 2001 Yamaha Raptor 660R


  • NEW 102mm after market big bore cylinder
  • JE or CP forged stroker piston**
  • Hi temp piston rings
  • Wristpin
  • Circlips
  • Hotrods +4mm stroker crank with rod
  • Crank bearings - one comes on crank
  • Counter balancer bearings
  • Transmission roller bearings
  • Shift cam bearing
  • Water pump bearing
  • Stud kit
  • Stage 3 Hotcam
  • Complete gasket kit
  • Complete seal kit 
  • Valve stem seals
  • Mechanical seal for water pump
  • Cam chain
  • HD clutch kit
  • Stickers

This is a bolt on kit with no machining required.  Piston uses pump or race gas.  Crank must be used with this piston only and piston with this crank only.  Everything is new in the original packaging.  We are an authorized distributor and the original manufacturer's warranty applies*. 

Products we sell: At bpracingatv our kits come with the same brand name parts as other rebuild kits you see online but we always include items no one else does.  We stock the exact same parts from different companies so that when back orders occur like they have been for the last year we have an alternate part to send that is the same quality.  This would be the ONLY reason your order might be slightly different when it arrives. 


Returns: Please check your order completely right when you receive it and let us know immediately if there is an issue, that way we can fix it for your ASAP.  99% of problems can be easily solved without returning the entire order.  We accept returns within the first 30 days for orders sent back 100% complete and all parts brand new, never installed or prepped for installation, in the original packaging


*Warranty: We stand behind all parts we sell 100%.  If after installation there is an issue contact us for a warranty return authorization.  We ALWAYS STRONGLY recommend parts be installed by a qualified, experienced mechanic.  Warranty does not cover failure that is a result of improper installation, tuning, break in, or misuse.  For any warranty to be considered the part(s) in question must first be sent back to us for inspection.  We do not warranty parts not installed correctly nor do we warranty anything based on phone calls, photos, or another mechanic's assessment alone


Feedback: Positive feedback is greatly appreciated.  We have changed the way we do business in response to customer concerns and receiving positive feedback when an order goes the way it is supposed to is a huge help.  If you do not feel we deserve positive feedback just contact us and we will do what is needed to help you feel as "positive" as possible about your experience.  Also, we appreciate your feedback to help us improve how we do business.  Please work with us and we will ALWAYS work with you.