Choose a vehicle:

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

» Log in to use your Rider Profile Machines
Boyesen Quickstart
  • View Larger

Customer rating on this product:

Read reviews (4) | Write a review

Sales Live Chat

Boyesen Quickstart

Our price: $159.99

MSRP: $189.95 - You save up to $29.96 (16% off)

View Product DetailsSee all machines the Boyesen Quickstart fits.

Select type, make, model and year above

  • "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

  • Returns

    We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

  • Warranties

    We will stand behind all products we sell with regards to manufacturing defects in workmanship and material. Most products are limited to the manufacturer's warranty. However, we will do everything in our power to take care of the problem.

  • Have questions?

    Live chat: Click here (Leave email if after hours)
    Email:sales@rockymountainatv.com
    Call us: 1 800 336-5437
    7am-7pm Mon-Fri 8am-4pm Sat (Mountain Standard Time)

  • 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

Your review could win you a $100 or $500 gift card!

Each review submitted enters you into a $100 gift card monthly drawing, and a $500 gift card quarterly drawing!

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.

Was this review helpful?

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.

Was this review helpful?

0 of 0 people found this review helpful.

Amazing!

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 *****

Was this review helpful?

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.

Was this review helpful?

Frequent Buyer ProgramParts Finder