Faction MX UTV Parts: Engine

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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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  • Faction MX Intake Valves

    Faction MX Intake Valves

    Toby in MB

    Good valves

    Good valves. Bike runs good with them in

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  • Faction MX Exhaust Valves

    Faction MX Exhaust Valves

    Joseph in WA

    Good

    good valves works good if you don't have the money for the high dollar ones

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  • Faction MX High-Rev Spring Kits

    Faction MX High-Rev Spring Kits

    Gavin in MT

    Great for racing

    before I installed these high rev springs I had to shim my valves after every couple of rides, I have had these in for about 5 months now and rode them hard for the whole weekend non stop and haven't had to adjust the valves at all, Love these springs.

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