Boom Racing Complete Front Assembled BRX90 PHAT™ Axle Set w/ AR44 HD Gears

Regular price $150.00

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  • The PHAT axle is the go-to scale truck axle combining high performance features with precision made scale realism. Based on the BRX70 PHAT Axle, the all-new BRX90 PHAT Axle is packed with lots of exciting solid axle features. It is an ultra scale, heavy-duty axle set designed for top performance in custom R/C builds.

    What stands out immediately about the BRX90 axle is the heavy weight. The axle weighs a whopping 280g. The heavy weight helps keep the vehicle planted to the ground at all times.


    • PHAT axle 280grams total weight (front)
    • Keyed HD AR44 Helical Bevel Gear Set. Bevel gears are keyed for extra durability and strength. Standard AR44 high pinion gear & input shaft
    • High pinion axle setup for better clearance
    • Removable third member with reversible axle bevel gear positions for standard or counter rotation setups (swap gear to opposite side for counter rotation center drivetrain setup)
    • Chassis Mounted Servo (CMS) or Axle Mounted Servo (AMS) setup option
    • AR44 compatible CNC aluminum Knuckles
    • Splined axle and C-hub with adjustable caster angles for steering adjustments
    • Detachable knuckle lever for Behind-The-Axle steering setup option. Over 50 degree steering angle for steering in front and 45 degree for BTA setup
    • Detachable CNC aluminum truss for 3-Link and 4-Link setup option
    • Leaf spring slots are ready for over or under the axle housing setup
    • BADASS HD Steel universal shaft for ultimate durability and strength for the axle drivetrain
    • Counter rotation stainless steel tie rod steering link for quick adjustments

    • 176mm / 6.93 inch pin to pin (front and rear)

    • 1x BRX90 Front PHAT Axle Housing
    • 1x AR44 Heavy Duty Keyed Helical Bevel Gear & Input Shaft (30/8T) BR955020
    • 2x CNC aluminum knuckles (AR44 compatible)
    • 2x BRX90 CNC aluminum C-Hubs
    • 2x BRX90 BADASS Heavy Duty Steel Front Universal Driveshafts BRBD9001
    • 1x CNC Aluminum Truss
    • 1x 4mm Stainless Steel Tie Rod Steering Link
    • 2x 4mm Aluminum Drag link Steering Link
    • 2x CNC Aluminum Link Mounts with multiple shock position options
    • 2x CNC Aluminum 12mm Hex and Wheel Pins
    • Full set of rubber sealed bearings set for BRX90 front axle
    • Full set of BADASS Rod Ends w/ Stainless Steel Pivot Balls
    • Hardware

    You will need:

    • For Axle Mounted Servo setup, the optional aluminum servo mount is needed.
    • For Chassis Mounted Servo setup, a panhard link is needed (as almost every car has a different setup, we leave this part up to you).
    • For Leaf Spring setup, additional optional parts may/may not be needed depending on your setup. Leafs can be mounted directly on top and under the axle. We recommend this.


    • For Leaf Spring setup, additional optional parts may/may not be needed depending on your setup. Leafs can be mounted directly on top or under the axle. We recommend

    When you receive the axle:

    Make sure all of the screws are tightened properly.

    The gear positions are factory setup and should be ready to go. Rotate the drivetrain by hand for physical inspection.

    Install spacers accordingly between the center driveshaft and the input shaft to prevent input shaft from unnecessary slop.

    Front driveshaft: BRBD9001
    Brass bushings: BRLC7022A

  • Package total weight: 368.00 grams (incl. packaging)
  • Factory description: Boom Racing Complete Front Assembled BRX90 PHAT Axle Set w/ AR44 HD Gears
  • Manufactured by Boom Racing
  • Manufacturer number: BRD9022