The Samix Traxxas TRX-4 Brass Portal Cover & Scale Brake Rotor 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 steering knuckles (SAMTRX4-4412 - not included) and c-hubs (SAMTRX4-4014 - not included) you have the ultimate brass upgrade package that will dramatically improve the performance of your TRX-4.
 
 
Samix Rc Traxxas Trx-4 Upgrades
  
 
Features:
Brass portal knuckle cover adds 55g a pair
Improve climbing performance and stability with lower CG
Machined from high quality brass material
Black finish to help avoid oxidation
Includes SAMIX 36mm scale brake rotor & caliper for improved scale looks
More rigid and increased durability
Direct fit on TRX-4 front & rear std knuckle and SAMIX alum. or brass option knuckle 
NOTE: The brake rotor is suitable for the standard TRX-4 wheel, and will clear any wheel with greater than 36mm inner diameter but may require wider hubs.