Hot Racing Traxxas Slash Multi Rate Rear Spring Set (3 Pair) X-Monster Standard Parts it also has an 21MTC

it also has an 21MTC interface as per NEM 660

DC Operational locomotive

Length: 32 cm

a leading manufacturer of RC plane parts

Hot Racing Traxxas Slash Multi Rate Rear Spring Set (3 Pair) X-Monster Standard Parts it also has an 21MTCThe Hot Racing Traxxas Slash Multi Rate Rear Spring Set is a multi rate spring set for the Traxxas rear shocks used on the 2WD Slash, Rustler, and Stampede. Features: Spring steel construction Multi rate springs allow the optimum spring rate for each application. These multi rate springs are soft at the beginning to soak up the small bumps, but transitions (crosses over) to the stiff part of the rate to resist bottoming on jumps and other big "hits".