The pistons, rings, valve and pin clips in this kit are designed to work together as a system. These are NOT compatible with OEM components and should ONLY be used with components in the kit.
Product Note:
| Specification | Details |
|---|---|
| Bore | Varies (make selection above) |
| Country of Origin | USA |
| Material | Varies (make selection above) |
| Valve Lift | Varies (make selection above) |
| Valve Type | Varies (make selection above) |
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
By Cc on
Verified Purchaser
Every part was packaged well and labeled. It made the installation very simple and quick. Highly highly recommend this kit for anyone looking to upgrade their bike and improve its performance.
By Joe R. on
Verified Purchaser
All parts fit like a glove. The motor is running great with the new parts.
By John H. on
Verified Purchaser
Got the kit and installed. Instructions were explanatory. Bike rips now. Thank you
By Vladimir T. on
Verified Purchaser
Bought my CRF450R new in 07' she was a ripper for many years but when she started getting hard to start I started looking into top-end kits... Well she is a fresh ripper, be careful not to loop it! Was such a slow fade I couldn't tell I was down on power with the fresh top end I've got all the power! Only thing I can say is that it is a bummer that this kit does not come with valve keepers. Overall great quality went together well and the bike rips, my local shop quoted me $1200 I got it done over a weekend and saved $800. Great Kit!
By David S. on
Verified Purchaser
Great value for great price! Best top end kit i have purchased, performance is like brand new!
By Steven K. on
Verified Purchaser
Kit included all top end parts, and the bike is running great. Would definitely recommend.
By michael d. on
Verified Purchaser
Nice kit
By Anna M. on
Verified Purchaser
Great parts. Quality.
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By rudy
my 2005 trx450r smokes when starts and need a reliable top end to handle hard trail riding
Provided the head is in good condition, there's no modification required to fit this to your machine since it's a high-quality replacement for the OEM components. With regard to jetting, that depends - if that TRX runs well after you put this on, then obviously, don't mess with it. But if you do have an older machine and the carb hasn't been touched in ages, the carb could probably use a good cleaning. That should solve most of your problem.
By nathaniel
2005 crf450x I'm looking at doing a top end kit, will I need to do any machine work with oem head for this to work?
No, there's no machining required in order to fit this kit in a 2005 Honda CRF450X. It bolts straight in place of all the OEM components.
By Ethan
According to Kibblewhite, the pistons that come in these kits are made by JE.
By William
Dont know if there is any differance i thought x modle runs a differnt cam so these should work?
Yes, there is an option to choose that 2005 CRF450X model to get the correct kit.
By Anon.
So long as the keepers you removed are in good condition, you should have no problem reusing them.
By Anon.
These kits do not include the retainer keys. You would need to reuse the originals or purchase new separately.
By TreVaughn
Shims are not included with the top end service kit.
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