The Yokomo SP-02D V2 RWD Digital Low Profile Drift Servo has the optimum specifications for RWD drift. The SP-02D can also be tuned with a program function that can be used to change the operating characteristics. By further rewriting the numerical values with the optional YOKSP-03DPC programmer (not included), the servo can be adjusted to suit drivers of all levels. As for basic performance, it is a product that realizes overwhelming performance at low cost. An aluminum center case allows efficient heat dissipation, while the coreless motor provides high response. Combine this with a titanium/aluminum gear set and you have the recipe for a drift servo with outstanding durability and performance. Specifications: Input Voltage: 4.8 - 6.0V Torque: @4.8V: 138.87oz/in (10kg/cm) @6.0V: 166.64oz/in (12kg/cm) Size: 40.8x20.2x26.1mm Weight: 48g