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Engine Valves and Shim KitsEngine Valves and Shim Kits

Dirt Bike Engine Intake and Exhaust Valves, Springs and Shims

When you hit the throttle of your dirt bike, there may be any number of things going through your head. If you’re racing on a motocross track, you might be anticipating the next series of whoops. If you’re on an enduro trail, you might be watching out for fallen trees. You’re probably not thinking about your engine valves, but that doesn’t reduce their importance. Your intake and exhaust valves are continually in motion, ensuring that your engine is operating at its peak performance. If they aren’t… well, fallen trees and whoops are going to be the last things on your mind.

When it’s time to replace your dirt bike valves, Rocky Mountain ATV/MC is your one-stop shop. We carry an extensive assortment of motorcycle engine valves: intake and exhaust valves, titanium and steel valves, and more. We stock leading brands like Pro X, Faction MX and Hot Cams. And with our Parts Finder, identifying the valves you need is easy. Need CRF250R valves? How about for a YZ250F? No problem! Just enter your bike’s make, model and year. We’ll do the rest to show you what fits.

Aside from valves, we also have important accessories like spring kits or shim kits. We even stock individual shims measured down to half sizes! And with the best prices, there’s nothing better than Rocky Mountain ATV/MC!

Latest Dirt Bike Engine Valves and Shim Kits Reviews – You could win up to $500 for reviewing products!

  • Kibblewhite Valve Spring Kit

    Kibblewhite Valve Spring Kit

    Joseph in TX

    Great replacement for stock spings

    Great replacement for stock works well. Suggest buying replacement collets when replacing springs

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  • Hot Cams Valve Shim Kit

    Hot Cams Valve Shim Kit

    Ronald in AZ

    Nice kit

    A great kit for the average Joe, some times you will still need that in between shim. Worth the money no doubt..

    Read All Reviews
  • Pro X Valve Shim

    Pro X Valve Shim

    Dan in OH


    Did the job. Shims are to spec.

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  • K & L Valve Shim

    K & L Valve Shim

    GEOFF in CA

    Worked exactly as it should.

    Shims did what they need to do, no issues at all.

    Read All Reviews
  • Pro X Steel Intake Valve/Spring Kit

    Pro X Steel Intake Valve/Spring Kit

    Adam in ID

    Steel Valves, Save lives!

    Replaced my bent titanium valves with these bad boys and have not had to adjust them after 7 rides! Worth the money

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  • Faction MX Intake Kit

    Faction MX Intake Kit

    BARY in UT

    Really mellowed out my 450X

    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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