46 ~ 57 Maximum Torque Range kg

15sec Torque @ 7

must-have accessory

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

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 46 ~ 57 Maximum TorqueMulti 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