Skip to content
IMPORTANT NOTICE: Due to increase in fraudulent orders the billing & shipping address must match when placing your order. Thank you for your patience and understanding.
NOTICE: Due to increase in fraudulent orders the billing & shipping address must match when placing your order. Thank you for your patience and understanding.

09-13 YFZ450R YFZ 450R Ported Assembled Head Porting Assembly Kibblewhite Valves

Original price $1,709.99 - Original price $1,709.99
Original price
$1,709.99 - $1,709.99
Current price $1,709.99
  • Brand new full race port and polish
  • Complete head assembly (NO CAMS)
  • Kibblewhite chrome silicone valve springs
  • Titanium retainers
  • Heat treated collars
  • Kibblewhite stainless steel valve conversion (intake and exhaust)
  • Kibblewhite viton valve stem seals
  • Valve keepers
Great for stock and really great for built engines.  Add cams starting at $450 (including installation).  Everything is new in the original packaging and the original manufacturer's warranty applies*

Products we sell: At BPRATV we sell everything, from cheap parts for those on a strict budget to the best that money can buy.  Our kits come with the same brand parts as other rebuild kits you see online but we always include items no one else does.  Our kits come standard with CP-Carrillo, JE, Wiseco, Wossner, Pro-X, Hotrods, Hotcams, Webcams, Cometic, Vertex, and Athena parts as well as our own parts we have manufactured specifically for us.  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.  We NEVER sub a cheaper part EVER without contacting you and offering you a partial refund.  All parts we sell have been tested and we have had huge success with them.  If we ever have a part that does not function well it is immediately discontinued and we stand behind everything we sell 100%*. 

 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.  Once items have been installed or used in any way they are no longer eligible for return.  

 *Warranty: We stand behind all parts we sell 100%.  If after installation there is an issue contact us for a warranty return.  This product is NOT DIY.  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 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 want information from customers when their experience is less than desirable so we know what areas need improvement the most.  Please work with us and we will ALWAYS work with you.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare