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Carburetor Jets from Rocky Mountain ATV/MC

High quality aftermarket Keihin and Mikuni Carburetor Jets. You can easily tune your powersport machine for altitude and riding style by choosing the best size main jet and pilot jet for your machine. Get some low cost performance gains here!

Latest Dirt Bike Carburetor Jets Reviews – You could win up to $500 for reviewing products!

  • Pro X 99101-357 Series Keihin Hex Main Jet

    Pro X 99101-357 Series Keihin Hex Main Jet

    Donald in AZ

    Simple, cheap, effective

    I picked up about 5 of these to have options due to the low price. May as well bracket my setup so as not to pay multiple shipping fees buying them separately. Turns out I guessed two off and had to go up twice, so this strategy worked out great. Easy in/out, no issues, work as advertised.

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  • Pro X N424-21 Series Keihin Pilot Jet

    Pro X N424-21 Series Keihin Pilot Jet

    Donald in AZ

    gets the job done

    Needed to go up one pilot and bought a 42. Upon opening up the bottom of the carb the previous owner had already installed a 42. Paid for shipping the second time to get a 45 which works great on this bike with my modifications to the box/pipe/filter. For the price I should have picked up a few the first time to save shipping. I did this with the main, but failed to do it with the pilot. You can buy two of these for the cost of shipping alone so it just makes sense to get more than one. Easy in/out, works flawlessly.

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  • JD Jetting Jet Kit

    JD Jetting Jet Kit

    Trevor in UT

    JD Jet kit

    Like other reviews, this jet kit is top notch. I live in Utah at my elevation is ~4500 feet above sea level. This kit helped out great with jetting issues. However, as others have mentioned this kit is extremely overpriced. With that said, I would buy it again as it is the best option for quickly setting up your jets,

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  • Pro X 4/042 Series Mikuni Hex Main Jet

    Pro X 4/042 Series Mikuni Hex Main Jet

    Jim in AZ

    Great quality and value

    About half the price my local dealer charges! I order everything I can from Rocky Mtn.

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  • Mikuni M28/1001 Series Pilot Jet

    Mikuni M28/1001 Series Pilot Jet

    Damian in NSW


    mikuni for the win

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  • Dynojet Jet Kit

    Dynojet Jet Kit

    Cody in WV

    Night and Day

    I bought the DynoJet kit along with a full HMF and K&N air system and it was a night and day difference!

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