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KFX450 KFX450R KFX 450R Cases Big Bore Stroker 516cc Complete Rebuild Crankcases


Compatible Vehicles
Submodel Year Make Model
-- 2014 Kawasaki KFX450R
-- 2013 Kawasaki KFX450R
-- 2012 Kawasaki KFX450R
-- 2011 Kawasaki KFX450R
-- 2010 Kawasaki KFX450R
-- 2009 Kawasaki KFX450R
Monster Energy 2009 Kawasaki KFX450R
-- 2008 Kawasaki KFX450R
  • Brand new set of OEM crankcases
  • 100mm big bore cylinder
  • JE or CP 100mm 12.8:1 forged piston**
  • Hi temp piston rings
  • Chrome wristpin
  • Circlips
  • Hotrods +3mm stroker crank with rod
  • Main bearings
  • Water pump bearings
  • Transmission bearings
  • Crank balancer bearings
  • Clutch arm needle bearings
  • Shift cam bearings
  • Maxlock TITANIUM head stud kit - LIFETIME WARRANTY*!
  • Clutch kit
  • Complete gasket kit
  • Cometic MLS big bore head gasket
  • Seal kit
  • Valve stem seals
  • Cam chain
  • NGK spark plug
  • Water pump shaft and impeller
  • Oil pump shaft and rotors
  • K&N oil filter
  • NGK spark plug
  • Stickers
  • All parts are brand new and aftermarket
  • 1 year warranty*
  • Piston uses pump or race gas
  • No case machining required

  This is a bolt on kit with no machining required.  Piston uses pump or race gas.  Everything is new in the original packaging and the original manufacturer's warranty applies*

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 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.  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.