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Faction MX Intake Valve Kit
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Faction MX Intake Valve Kit

Our price: $161.99$233.99

MSRP: $190.00 - $275.00 - You save up to $41.01 (15% off)

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  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

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Additional Videos

How to - replace the valves on your motorcycle or atv

How to - Four-Stroke Top End Rebuild (Part 2)

How to - Adjust Valves On A Motorcycle/Atv

RM YouTube Channel


    Faction MX has created the total solution for those seeking the most performance and longevity from their 4-stroke motor. Many riders experience trouble with their valves losing clearance rapidly, even on a new bike.

    Regardless of maintenance or amount of time on the motor, it can happen to the best of us. The solution is in the quality of valve train components used. Faction MX has combined all of their quality engineered components into one package that provides you with exactly what you need to get your bike running right and staying that way.
  • Kit Includes:
    - 2 stainless steel intake valves.
    - 2 high-rev intake valve springs.
    - 2 titanium intake retainers.

Faction MX Intake Valve Kit Reviews

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0 of 1 people found this review helpful.

Really mellowed out my 450X

Comments On Sep 25, 2014:After having valve issues on a recent trip to Baja I came home and promptly purchased and installed this valve kit. It all went together well and the new valves sealed perfectly in the valve seats. Before installing the kit my bike pulled strong well into the rpm range that I wasn't comfortable taking it to. after installing the kit I can't get it to rev anywhere near that range. It does fine below about 7 rpm but above that it sputters. I think the valves may be floating either due to bad springs or the wrong springs, possibly intended for the titanium valves but I don't know and I have not been able to get Faction MX to answer the phone, respond to an e-mail or return a call and I have tried many times. I would definitely not recommend this valve kit.

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0 of 0 people found this review helpful.

Good Product

Comments On Feb 07, 2014:These are as good or better than stock ! I prefer the Titainium valves over stainless, and these have been great. 1000 + miles and clearance was still spot on.

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0 of 0 people found this review helpful.

stop replacing intake valves

Comments On May 24, 2013:Much better durability than titanium valves on my crf250. Save a bunch of money

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0 of 0 people found this review helpful.

2005 Crf250R

Comments On Dec 14, 2011:Been in the bike for about 7 hours of ride time and seem to be checking out good. Bike runs and idles awesome, way better then those stock titanium junk valves

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1 of 1 people found this review helpful.

2006 CRF 250

Comments On Jan 15, 2010:Working great so far, 4 months of riding and no shims. I was shimming the OEM valves every other ride and replacing the valves in less than 3 months.

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1 of 1 people found this review helpful.


Comments On Dec 22, 2009:Good product. I only wish this came with the valve guide seals - you'll need to get those also if you're getting this kit.

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0 of 0 people found this review helpful.

Best intake solution

Comments On Jul 22, 2009:This is the best deal you can get on valves, It's fairly complete and at a decent price.

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0 of 0 people found this review helpful.

perfect fit

Comments On Jun 18, 2009:working good so far

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2 of 2 people found this review helpful.

These should come stock

Comments On Mar 01, 2009:I installed these valves in my CRF450 6 months after I bought the bike new. The stock valves needed shimming after every 2 races and ran out of adjustment very fast. Now after 6 months of use, these valves have not needed any shimming and the weight difference is not noticed at all. The increased durability far exceeds any anticipated loss of power, however; I never noticed any loss and unless you have money to burn on new titanium valves every 4-6 months and actually use every bit of power a 450 makes (be honest - I think maybe 4 racers in the U.S. can) these are a great investment! Also, my kit was complete, it included titanium retainers. The other reviewer most have lost the retainers that come in the kit or accidently threw them out because I found mine taped on the bottom of the box.

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2 of 4 people found this review helpful.

kit not complete does not have retaining clips

Comments On Oct 28, 2008:kit should have all parts to replace valves it did not have valve retaining clips they expect you to use old one with new valves if you spend the money you should get a complete kit

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