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YFZ450 YFZ 450 Big Bore Stroker 98 mil Complete 500cc Motor Engine Rebuild Kit

$1,299.99

Compatible Vehicles
Submodel Year Make Model
-- 2013 Yamaha YFZ450
-- 2012 Yamaha YFZ450
-- 2009 Yamaha YFZ450
-- 2008 Yamaha YFZ450
-- 2007 Yamaha YFZ450
-- 2006 Yamaha YFZ450
-- 2005 Yamaha YFZ450
-- 2004 Yamaha YFZ450
Limited Edition 2004 Yamaha YFZ450LE
Special Edition 2007 Yamaha YFZ450SE
Special Edition 2006 Yamaha YFZ450SE
Special Edition 2005 Yamaha YFZ450SE
Special Edition II 2007 Yamaha YFZ450SE2
Special Edition 2008 Yamaha YFZ450SP
Special Edition II 2008 Yamaha YFZ450SP2
Bill Balance Edition 2007 Yamaha YFZ450V
Bill Balance Edition 2006 Yamaha YFZ450V
Custom Graphics 2013 Yamaha YFZ450W
Custom Graphics 2012 Yamaha YFZ450W
FITS ALL YAMAHA YFZ450 CARB MODEL YEARS AND MODELS!

  • NEW 98mm cylinder
  • Wiseco or CP forged piston**
  • Hi temp piston rings
  • Wristpin
  • Circlips
  • Hotrods +3mm stroker crank with rod
  • Main bearings
  • Transmission bearings
  • Shift cam bearing
  • Water pump bearing
  • Complete gasket kit
  • Complete seal kit
  • Valve stem seals
  • Timing chain
  • Head stud kit
  • Stickers
**We spend a lot of money to stock the same piston from different companies solely to have an alternate when one company is out, which happens constantly right now.  If you want a specific brand just ask This is a bolt on kit with no machining required.  Piston uses pump or race gas.  Everything is new in the original packaging.  the original manufacturer's warranty applies*. 

Negative feedback hurts everyone and in most cases is totally unnecessary. If you have ANY issue with something you order from us PLEASE let us fix the problem before you leave feedback. We 100% guarantee we will find a reasonable solution to any problem. We want happy customers always

Please check your order thoroughly when you receive it and contact us if you have any issues at all.  If you are not 100% happy with what you receive you are welcome to return it for a full refund, not questions asked!  Thanks!!

*We ALWAYS STRONGLY recommend that this be installed by a qualified mechanic with experience doing this type of work.  Warranty does not cover any failure that is a result of improper installation, improper break in, improper tuning, or misuse.  Piston comes with specific instructions for setting ring gap.  If you do not follow these your motor will fail.  For any warranty to be considered the part(s) in questions must first be sent to us for inspection.  We can not warranty anything based on phone calls or photos alone.