i got the intake kit in september of 07 and they are still goin strong. it would take 3 of the stock sets (at nearly $120 each time) to last as long as mine have so far. with a valve seat grinding job, a clean air filter, and clean oil anybody should be pleased with the performance of this product, and the price is an added bonus too.
Faction MX Intake Kit [obs]
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If your inake vales keep tightening up then i would replace them with these stainless steel vales because when i put them on my 07 crf250r ,i havent touched them for 100 hours.I feel more relaxed because i know i fixed my bike.So if your having problem then get them.
I got the kit for my 2005 CRF450. they did not last any longer the the stock valves.
The Faction SS valve kit fixes a weak link the factory should have. This kit is awesome. The purchase process was easy, with fast shipping. I also felt this was a great value. Since installing this kit, the bike runs great, and has required no additional valve maintenance. I would highly recommend Motosport outlet, and the Faction valve kit.
For anybody who has ever had problems with weak stock valvetrain components this is the cure. It includes the durable stainless steel valves with the high quality valve springs to keep them under control. I have put over 115 hours on this kit and am still running it.
I put this kit on my CRF450R. The bike runs great, I havent had any bad problems with vavle stretch. I would definitely use them again.
There have been no questions asked about the Faction MX Intake Kit [obs].