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Pro X Steel Intake Valve/Spring Kit
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Pro X Steel Intake Valve/Spring Kit

Our price: $113.99$170.99

MSRP: $126.39 - $188.99 - You save up to $18.00 (10% 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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  • 21-4N Stainless Steel Valves for increased durability and less wear under extreme conditions.
  • Black Nitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide.
  • Special designed valve springs deal with the extra weight of the Stainless Steel valves.
  • Springs are made from premium Chrome Vanadium Steel for higher performance and durability at high rpm.
  • Fully rebuildable utilizing your OEM retainers, bases and seals without the need of any further engine modifications.
  • Comes as complete package of all intake valves and springs.

Pro X Steel Intake Valve/Spring Kit Reviews

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1 of 1 people found this review helpful.

must have for crf's

Comments On Oct 23, 2013:I have a 2005 crf 250x. I race harescrambles. I used to have to adjust my valves every three races or so. I installed these at the beginning of the season and my last race was about a week ago. I have had zero problems with my valves since installing these.

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0 of 0 people found this review helpful.

Fixes Honda Valve Problem

Comments On Sep 29, 2013:Been over a year and only had to adjust these valves once because when there brand new they need to be worn in and then they go forever. I was adjusting my oem valves every 10 hours but if you buy these there is no problem. I also noticed a little more low end power because these weigh a little more but I love them

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0 of 0 people found this review helpful.

Great Valves

Comments On Jun 11, 2013:These valves are great. When I rebuilt my bike I redid my head (cut the valve seat) and then installed these Pro-X steel exhaust and intake valve kits with new seals. Bike started in 2 kicks and has been going strong since. It's been about 3 months and I've been racing nonstop since then with no problems. Still starts in about 2 kicks, and I haven't even had to re-shim them.

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0 of 0 people found this review helpful.

intake valves

Comments On Feb 12, 2013:great valves, much better than original

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0 of 0 people found this review helpful.

Great Valves

Comments On Jan 06, 2013:Put these in. Noticed a small power loss but hopefully they last longer than the oem valves.

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0 of 0 people found this review helpful.

valves n springs

Comments On Sep 04, 2012:for ss valves and springs how can u go wrong

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0 of 0 people found this review helpful.

Me Likey!

Comments On Apr 22, 2012:Have had great luck with the steel valves, I have not had to adjust them in over a year, and I don't notice any power loss.

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0 of 0 people found this review helpful.

great product

Comments On Mar 20, 2012:baught a set of these for my CRF250. installed them myself was super easy and best of all i ddidn't have to take the head to the shop to have the valves seated.

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0 of 0 people found this review helpful.

Fixes Honda valve problem

Comments On Feb 21, 2012:Wish I would have switched to these years ago! I can't feel any power loss whatsoever, and I ride Vet Expert. And you may not need to cut seats, I've replaced valves like 5 times in this bike. I had them cut for the first time before my last set of OEM valves and they didn't last any longer. I just swapped these in with no issues.

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1 of 2 people found this review helpful.

Better than stock Ti

Comments On Aug 09, 2011:These valves were that close to factory spec that after I lapped them in, the stock shims were re-used and come on recommended clearance. Excellent valve for the money.

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Instructional

Four-Stroke Top End Rebuild (Part 2)

How To Adjust The Valves On A KTM 500 XC-W Motorcycle

How to adjust the valves on your motorcycle or atv - Shim Type

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How to replace the valves on your motorcycle or atv

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