ITEM NAME:Professinal 540 55T Brushed Motor For 1/10 RC Car Rock Crawler SCX10 Wraith Description: 4 Pole 12 Slot Hi-torque Motor Design,CNC Machined 6061 T6 Billet Aluminum Heatsink Can High Purity Copper Windings Maximizes Efficiency,High RPM Oversized Bearings Precision balanced rotor,smoothness for best reliability and maximum RPM,Removable/Replaceable Rotor. Precision Engineered for Maximum Energy Conversion,Rebuildable with an easily accessible commutator and replaceable brushes and springs. Specifically designed for R/C vehicles that require precise movement control. Suit for 1/10 RC Car Truck Boat Crawler RC4WD D90 SCX10 Axial Material:Metal Specification: 35T Specification Type: 540 35T Max voltage: 13V Max current: 28A Suit for 1/10 RC Car Shaft dia: 3.12mm Shaft length: 12mm Motor dia: 36mm Package size: 9.5 * 8 * 6.5cm / 3.8 * 3.2 * 2.6in 55T Specification: Current: 1.82A Turns: 55T RPM: 16500 Motor type: Brushed Input voltage: 7.4V Diameter: 36mm Length: 55mm Shaft length: 12mm Shaft diameter: 3.175mm Size Chart: Package size: 10.5 x 8 x 6cm / 4 x 3.2 x 2.4in. 27T Specification: Current: 1.82A Turns: 27T RPM: 16800 Motor type: Brushed Input voltage: 7.4V Diameter: 35mm Length: 50mm Shaft length: 12.5mm Shaft diameter: 3mm Size Chart: Package size: 9.5 x 8 x 6cm / 3.7 x 3.1 *x2.4in Package Includes: 1 piece 540 Brushed Motor.Suit for 1/10 RC Car Truck Boat Crawler RC4WD D90 SCX10 Axial. 55T Specification Turns: 55T. Type: 540 35T. Motor type: Brushed. Suit for 1/10 RC Car. 1 piece 540 Brushed Motor. 4 Pole 12 Slot Hi-torque Motor Design,CNC Machined 6061 T6 Billet Aluminum Heatsink Can.