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ATM Innovation’s E85 XRX Race Series is the ultimate 4700/4500-flange carb. Available in 1 size, 1250 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. The throttle shafts are slabbed for unrestricted flow. And 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. They also have special gaskets and GFL diaphragms resistant to methanol fuel.
Methanol XRXs have a shiny tumbled polish finish with black anodized billet blocks.
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 E85 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 1 size available 1250cfm, 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.
E85 XRXs have a shiny tumbled polish finish with black anodized billet blocks and billet throttle bodies. They also have special gaskets and GFL diaphragms resistant to ethanol blended fuels.
Part #: XRXE
