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XRX Race Series Gas Carburetor

XRX Race Carburetors

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XRX Race Series Gas Carburetor

ATM Innovation’s Gas XRX Race Series is the ultimate 4700/4500-flange carb. Available in 3 sizes from 1250 cfm all the way to a whopping 1650 cfm, it's enough to feed the most robust big-blocks. A QFT die cast aluminum carb body is fitted with annular discharge boosters and ATM 4-circuit, 5-emulsion, 4-corner idle billet metering blocks and slabbed throttle shafts for reduced turbulence and increased flow. ATM's all aluminum dual inlet fuel bowls with dual sight glass windows are fitted with 7/8”-20 AN #6 fittings for securing fuel lines.

Gas XRXs have a polished silver finish, with black anodized billet blocks.

Please ensure to submit your custom build sheet for your order.  This will ensure that your carburetor is built correctly for your application. Please submit at: Custom Build Sheet Online Form.

Product Details

XRX Series


X = cause it's cool

R = Race

X = Xtreme

When it comes to large 4700/4500-flange carburetors it’s hard to beat ATM Innovation’s XRX Race Series. You get a true custom built carb that is engine tested and ready-to-race right out of the box. And with the help of ATM’s Custom Shop technicians you can get your XRXs configured for anything from throttle stop racing to all-out 2 x 4 setups.

ATM starts with a QFT die cast main body and adds its own ATM billet 4-circuit, 5-emulsion metering blocks with 4-corner idle adjustment. It adds annular booster assemblies with custom sizes from .092”-1.05” depending upon the carb size and the application. Of course the XRX has changeable idle and high-speed air bleeds and changeable idle, emulsion, intermediate and discharge channel feed restrictions. With 3 sizes available from 1250 cfm to 1650 cfm, the XRX has advanced inlet contours and slabbed throttle shafts with external linkage that enhances flow velocity.

The final piece of the XRX puzzle is the ATM's all aluminum dual inlet; dual sight glass windows fuel bowls that control fuel flow regardless of the G-forces. They have the desirable 7/8”-20 AN #6 fittings that make plumbing your fuel system failsafe.

Gas XRXs have a polished silver finish, with black anodized billet blocks and billet throttle bodies.

  • Available in 3 sizes from 1250 cfm – 1650 cfm (gas)
  • QFT die cast aluminum carb body w/annular boosters
  • ATM 4-circuit, 5-emulsion billet metering blocks
  • Changeable air bleed and fuel channel restrictions
  • 4-corner idle adjustment
  • Slabbed throttle shafts
Price: $1,400.00
Size CFM:
Have you submitted your custom build sheet for your order?:

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