Traxxas GTR 139mm Progressive 1.250 Rate RC Shock Spring - 8441 Terrain Building Kit The XRT is a ready-to-run

The XRT is a ready-to-run model

Left canard / splitter extension

it keeps your Sport Cub S airworthy and matches the original airframe exactly

dry airframe surface and a soft cloth or squeegee for application

and are supplied as a pair

Traxxas GTR 139mm Progressive 1.250 Rate RC Shock Spring - 8441 Terrain Building Kit The XRT is a ready-to-runThe Traxxas TRX8441 GTR shock springs are 139mm progressive rate replacement springs designed for Traxxas models running GTR shock absorbers. Sold in a pair with a natural finish and identified by a blue stripe, these 1. 250 progressive rate springs are a direct fit spare for keeping your Traxxas RC car's suspension performing as intended. The progressive rate design means the spring stiffness increases as compression deepens, giving a softer initial