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.
Larryhob –
love it
CHAD CARLIN (verified owner) –
This carb makes a world of difference with all the options! Nofhing will make the difference this does!
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.
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!
kasey g –
better than we expected.
its used but runs instantly when installed. really happy with the bolt on power.