Direct replacement high performance 480cc complete big bore motor kit with gaskets
This is a complete drop in bolt on kit that works on pump or race gas with all new parts the most complete kit online. This will work with your stock head and there is no machining required.
Fits Yamaha YZ450F Dirtbike Models Years 2003 2004 2005
Included parts are:
- 98mm big bore cylinder
- 13.5:1 CP piston kit with rings, pin, clips
- Hotrods HD crank with rod
- Heavy duty main bearings
- Hotcams Stage 1 cams
- Kibblewhite race valve spring kit
- Kibblewhite stainless steel intake and exhaust valves
- Cam chain
- Complete gasket kit
- Complete seal kit
This is a bolt on kit with no machining required. It will work with your stock cases and head. All parts are brand new and come with a warranty*.
We ship worldwide & ship all domestic orders free!
*We recommend that this kit be installed by a qualified person with experience working on these types of motors. 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 shipped to us and possibly the manufacturer for inspection. Sorry but we do not warranty parts based solely on phone calls or photos. Contact us with questions. Thanks.