40-size glow and electric aircraft will relish in its power and reliability

Leave the weight out if you want the front light

46 ~ 57 Maximum Torque Range kg

Assembly onto a Slash

Really simple to change up setups with piggyback adjustable valve

Hot Racing - Progressive 33x160mm Springs for Traxxas X-Maxx Upgrade Parts Car and Truck Bearings and Bushings 40-size glow and electric aircraftMulti 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 transition to the stiff part of the rate to resist bottoming on jumps and other big hits. Two (2) Black Ex Hard springs Two (2) blue Hard Springs Two (2) Red Med SpringsCold coiled springs are designed to use with these progressive rates spring. High quality spring steel construction Three