Samix Traxxas TRX-4 Brass Shock Spring Cups (Black) (4)

Samix Traxxas TRX-4 Brass Shock Spring Cups (Black) (4)
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The Samix Traxxas TRX-4 Brass Lower Shock/Link Mount Set is a precision machined spring cup option that adds 25 grams of unsprung weight to the axles of your TRX-4, for improved CG and overall performance. Unlike other brass parts, these feature a stealthy black finish, with laser etched logos that give the parts a scale look with a touch of bling.


  • Pack of four brass shock spring cups
  • Adds 25g to help lower CG and improve performance
  • Slotless design will not fall off when running a soft spring
  • Direct fit on stock shock
  • Machined from high quality brass material with black coating to avoid oxidation
  • Laser etched SAMIX logo
Verified Owner
Monday, Jan 8 2018 (about 2 years ago)
Samix Traxxas TRX-4 Brass Shock Spring Cups (Black) (4)
I purchased all except the link balls. I have two buddies that have TRX4 also and they cannot climb what I can same wheels and tires (stock traxxas) I can be at 45* and keep going no problems. The fitment is totally legit. I was a machinist and I have to sat NICE! No problems there. These are worth every penny. I will purchase samix parts in future if they start to make diff covers also. I am impressed with the quality.
Verified Owner
Thursday, Aug 1 2019 (about a year ago)
Samix Traxxas TRX-4 Brass Shock Spring Cups (Black) (4)
The stock spring cups are quite easy to knock off in twigs and grass out on the trail. These fix the issue and they fit perfectly, plus a little extra weight in the right place is always welcome. Highly recommended!