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Hot Racing Aluminum X-Maxx Adjustable Upper Arm (Black)

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This is an optional Hot Racing Aluminum Adjustable Upper Arm for use with the Traxxas X-Maxx 6S and 8S models. This arm can be used in the upper front or upper rear of the X-Maxx.


  • Adjustable camber to tune vehicle performance for track conditions
  • Fits front or rear
  • CNC machined 6061-T6 aluminum, black anodizing for durability, corrosion resistance, and great looks
  • Stainless steel hinge pins
  • Blue anodized aluminum hinge pin retainers
  • Replaces the factory plastic components
101g/side with hinge pins


  • (2) adjustable upper arms
  • (2) outer hinge pins
  • (2) inner hinge pins
  • (2) hinge pin retainers
  • Hardware


  • Installation onto truck and installing and tightening set screws to lock camber position
  • Order two packages to complete one truck
  • Medium thread lock (e. g. blue Loctite) on screws


  • Replaces Traxxas stock TRA7729 upper suspension arms
  • Replacement pin retainers are Hot Racing HRAXMX5421M06

This product was added to our catalog on May 24, 2018