The Injora INJS11 Aluminum High Voltage Micro Servo Set is a performance upgrade for Arrma GROM and Losi 1/12 NASCAR platforms. It delivers up to 11kg-cm of torque with fast 0.074s/60-degree response at 8.4V, featuring a coreless high-voltage motor, a CNC-machined aluminum case for strength and heat dissipation, and stainless/hardened steel gears for lasting durability. Includes an aluminum servo saver (25T).