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Traxxas Original Equipment Parts

Traxxas TRA4957R Progressive Springs for Ultra Shocks: T-Maxx 3.3 & 2.5, E-Maxx

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These are Progressive Rate Shock Springs from Traxxas.

This is a Stock part for:

1/10 E-Maxx Mamba (3908)

This is an Optional part for:

1/10 E-Maxx EVX2 (3903)
1/10 T-Maxx 3.3 (4907)
1/10 T-Maxx 3.3 (4908)
1/10 T-Maxx 3.3 (4909)
1/10 T-Maxx 2.5 (4910)

  • Steel construction
  • White in color
  • For Traxxas Ultra Shocks only
  • Front or Rear
  • With small bumps these are like Light Springs, with larger bumps they act like Heavy Springs
Under light-duty driving, the progressive rate springs soak up the small bumps as a softer spring would, but when the conditions get rough and the jumps get big, the progressive rate springs step up to the challenge by getting firmer.


Four (4) Springs


Length: 3" (76.2mm)