Samix Traxxas TRX-4 Brass Portal Knuckle Cover

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The Samix Traxxas TRX-4 Brass Portal Cover Set is a precision machined portal cover that adds 55 grams of unsprung weight to the front or rear of your TRX-4, for improved forward weight bias and performance. Unlike other brass parts, these feature a stealthy black finish, with chamfered edges that give the parts an unmatched look that offers a touch of bling to your scaler.

Plus, when combined with the Samix scale brake rotors (SAMTRX4-6412 - not included) you have the ultimate scale upgrade package that will dramatically improve the look of your TRX-4.


  • Brass portal knuckle cover adds 55g a pair
  • Improve climb performace greater stability and lower CG
  • Make of high quality brass material (with black coating can avoid oxidation)
  • Compatible with SAMIX scale brake rotor & caliper for a more realistic looking crawler
  • More rigid and increased durability
  • Direct fit on TRX-4 front & rear std knuckle

This product was added to our catalog on November 16, 2017