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Boyesen Quickstart
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    Boyesen Quickstart

    Our price: $159.99

    MSRP: $189.95 - You save up to $29.96 (16% 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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    • MXA 5 Star rated "If you can't start your FCR-equipped four-stroke when it stalls, you need the Boyesen QuickStart".
    • Integrated Hot Start Assist eliminates problem 4-stroke hot start procedure.
    • Tunable leak jet circuit maximizes volume of fuel and duration of fuel spray for any condition.
    • Patented design stops bogging and improves throttle response.
    • Improved low end performance.
    • Investment cast and finished to precise tolerances.
    • High volume vertical check valve located in the QS3 for precise, consistent fuel metering.
    • Fits ALL Keihin FCR carbs.

    Boyesen Quickstart Reviews

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    0 of 0 people found this review helpful.

    so so

    Comments On Sep 27, 2013:Well, I'm really not sure this added any value to my hard starting situation. The dealer added it when they did shimmed the valves. I haven't been able to find documentation on the purpose of the knob near the carburator end. The "start" pull replaced the OEM "hot start" on the WR250F. All in all, it's not clear that this unit made a huge difference on my bike. I think the valve shims did more to fix the hard starting.

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    0 of 1 people found this review helpful.

    Did Not Work - Sent Back 4 Refund

    Comments On Mar 14, 2013:I installed it according to the directions and brought to my mechanic shop to dial it in due to popping on decceleration and they could not get it to quit, the carb was jetted correctly and in good condition as well as the valves and the bike had no backfiring before, other than the "wide open throttle" type most 450's get when going extremly fast on a beach. My mechanic said he spoke with boyesen reps on the phone who told him to just send it back for the refund and it happens commonly. I was hoping this would help with hot-starting issues and really dissapointed now.

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    0 of 0 people found this review helpful.


    Comments On Feb 17, 2012:Bought this instead of the Quikshot3, for my 05' yfz450 w/ 480cc Athena. Elminated bog and all hot starting issues, and increased throttle response drastically! Really woke up my bike's Bigbore kit. Highly recommended *****

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    1 of 2 people found this review helpful.

    Just OK

    Comments On May 03, 2011:I bought this to help with a starting issue on my CRF250R Honda. The adjustable leak jet feature is really good. The Acc. pump block really did not live up to my expectations and I still had hot starting issues.

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