Kibblewhite Top End Service Kit with Black Diamond Valves

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.

Give your bike a performance boost
Includes all necessary parts for a complete top end service/rebuild: pistons, piston rings, piston pins, gaskets, valves and valve springs
Pistons fully machined from 2618 aluminum alloy with a performance skirt coating
KPMI Black Diamond engine valves
Lightweight racing valve springs kit with titanium valve spring retainers, dual springs and H.T. steel base washers (springs are suitable for use with high-performance cams)
All necessary gaskets, seals and O-rings included
Sold as a complete kit
Made in the USA

Specification	Details
Bore	78 mm
Country of Origin	USA
Material	Aluminum
Valve Lift	.350 in.
Valve Type	Black Diamond

Vehicle Fitment

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.

CRF250R 4-Stroke 2004-2007
CRF250X 4-Stroke 2004-2009, 2012-2017

Customer Reviews

All parts fit like a glove. The motor is running great with the new parts.

Got the kit and installed. Instructions were explanatory. Bike rips now. Thank you

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!

Great value for great price! Best top end kit i have purchased, performance is like brand new!

Kit included all top end parts, and the bike is running great. Would definitely recommend.

Nice kit

Great parts. Quality.

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Questions & Answers

Do I need head work?

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 Tom

What brand piston comes with it

By Ethan

According to Kibblewhite, the pistons that come in these kits are made by JE.

By Andy

Will this fit a x model "crf450x 2005"?

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 Andy

do i need to buy valve keepers with this kit, or can i reuse my old ones?

By Anon.

So long as the keepers you removed are in good condition, you should have no problem reusing them.

By Andy

Does it come with retainer keys? I don't see any in the picture or parts list.

By Anon.

These kits do not include the retainer keys. You would need to reuse the originals or purchase new separately.

By Andy

Does it come with shims

By TreVaughn

Shims are not included with the top end service kit.

By Andy

Have a question? Please ask our experts and customers who own this product.

Kibblewhite Top End Service Kit with Black Diamond Valves

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