DRZ400 Keihin FCR Upgrade Kit- Performance Carb Mod 39mm For sale

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(5 customer reviews)

Retail Price $1,341.99
Our Price $999.90

Availability: In Stock (Changes Daily)

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Dirt Bike Part for sale info below 

Keihin FCR MX Carb 39mm Upgrade kit

For the DRZ400 Dirt Bike & Supermoto. Includes everything needed to install the FCR Carb on the DRZ400 properly! 

This video shows a completely stock motor with a full exhaust and this carb upgrade.

this is a version 1 Fcr carb – please view our new product as well below for even higher power gains!

For the drz400 to perform as shown in the video above, please select all green upgrade buttons above. 

  • -Gas tank nipple (for the stock gas switch to work properly)
  • -TPS sensor (ready to plug into the Suzuki wiring harness)
  • -New adaptor boots (for easy install and runs the bike’s throttle cover to keep out dirt particles)
  • -Tuned for each order (Please include in the order notes page: elevation, bike mods, mileage, and riding style)
  • -Upgraded float bowl (for the fuel flow in any angle that the bike is leaned: whips, wheelies, off-roading, etc.)
  • -Correct needle (allows for a smooth power band and the ability to pull endos without stalling the engine)
  • Keep note that this carb will still run great without any upgrade options selected, with a gain of 10% power over the stock option. When all upgrade options are selected, there is an additional 10% increase in overall power with perfect throttle response. This is also a reverse linkage accelerator pump so the pump twists as fast as the throttle does.

Free Shipping

Free shipping
within the continental US.

Product Options

Upgrades and/or product condition options are available for this part.

30-Day Guarantee!

No need for returns when compatibility and product quality is covered.

On the checkout page, we require the exact year and model to ensure a perfect fit.

Please include your exact bike year, model and sub-model (along with any questions/comments) when checking out, as we have multiple variations available.

5 reviews for DRZ400 Keihin FCR Upgrade Kit- Performance Carb Mod 39mm For sale

Based on 5 reviews
5 star
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  1. Larryhob

    love it

  2. CHAD CARLIN (verified owner)

    This carb makes a world of difference with all the options! Nofhing will make the difference this does!

  3. Philip T. (verified owner)

    Better than expected results! Should have done this years ago. Not often things live up to your expectations, but this exceeds them.

  4. Bill Styles

    my bike is a 2001 so i dont need anything fancy just wanted to wheelie better around my city. this carb did that and more, Boston did recommend running the TPS but I didn’t wanna pay 150 for a wire. I did end up buying it last week as I ordered some other brake parts from them and was surprised how the bike revved up a lot quicker! man this Is fun wish there was more mods to do on this bike!

    • Boston Morse (store manager)

      THANKS BILL, now that it’s fast how about we make it light up the night with some trick LEDs!

  5. kasey g

    better than we expected.
    its used but runs instantly when installed. really happy with the bolt on power.

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    Hi, yes please add all options. 

    A this kit will run with no options but the more you... Read more
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    A There is 25% Gain on a stock carb and pipe set up ... Read more
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Is Shipping Included?

Yes, there is free shipping on all DRZ400 Keihin FCR Upgrade Kit- Performance Carb Mod 39mm For sale‘s in the continental US.

Is fitment guaranteed?

Yes, when all options are selected for the DRZ400 Keihin FCR Upgrade Kit- Performance Carb Mod 39mm For sale, fitment is guaranteed.

Do you ship worldwide?

Yes, we ship all products internationally for an additional cost. Additional shipping costs for a product will show when your region is selected on the checkout page under shipping.

What is your product return policy?

With any DRZ400 Keihin FCR Upgrade Kit- Performance Carb Mod 39mm For sale for sale online, PayPal and credit card are covered by a 30-day return policy.

How do I speak with a live agent?

Click on the dirtbike helmet icon for a quick email/call or text-back response to any question you may have.


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Rated 4.8 out of 5
4.8 out of 5 stars (based on 391 reviews)