Boom Racing Complete Front Assembled BRX90 PHAT Axle

Product no.: BRD9022

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Delivery weight: 520 g


The PHAT axle is the go-to scale truck axle. 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's out of the BRX90 axle is the weight of them. The axle weighs 280g. The heavy weight helps keep the vehicle planted to the ground at all times.



176mm pin-to-pin 



  • 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



  • 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 Universal Driveshafts
  • 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



Please make sure you grease up the axle set. You can fill up the empty space with diff grease surrounding the bevel gear and input shaft.

The gear positions are factory setup and should be ready to go. Make sure you turn them by hand for a physical inspection before you install them. They should be smooth out of the box.

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


Product total weight: 368.00 grams

Factory description: Boom Racing Complete Front Assembled BRX90 PHAT Axle Set w/ AR44 HD Gears
Manufactured by Boom Racing
Manufacturer number: BRD9022



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