RPM Shock Shaft Guards for 1/10 Traxxas GTR Shocks. Protect your expensive GTR shocks from rocks, dirt and debris striking shock shafts that lead to dents, dings and burrs. Damaged shock shafts lead to torn shock seals, torn shock seals mean leaky shocks and poor shock performance. RPM Shock Shaft guards shield the shock shaft from those deteriorating elements, prolonging the life of the shock shaft. Smoother shafts improve the longevity of the seals and in turn, prolong the time between shock rebuilds!