This is the Sidewinder SCT ESC and 3800kV Motor Combo from Castle Creations. **This is a unique combo, the motor has a** **5mm output shaft instead of the standard 1/8" (3.2mm) shaft.** **Not recommended for vehicles using 48 pitch gears** **due to limited pinion gear choices.** FEATURES: Ideal for 2WD or 4WD short course racing or backyard bashing Neu-Castle 4 pole 1410 1Y motor has 50% more torque than Castles CM36 series Sidewinder SCT has 40% greater power handling than previous Sidewinder 1/10 scale ESC Castle Link compatible (Field Link Portable Programmer Car Card (CSEM6300) required, not included) Proportional brake with reverse lockout Waterproof* INCLUDES: Castle Creations Sidewinder SCT ESC, 4mm Bullet Motor Connectors and Neu-Castle 4 pole 1410 1Y Brushless Motor, Instructions REQUIRES: Battery connector of modelers choice SPECS: ESC Input Voltage: Minimum 2S LiPo, maximum 3S LiPo Brake: Proportional Reversible: Yes, with lockout Width: 1.48" (37.5mm) Length: 1.93" (49mm) Height: 1.18" (30mm) Weight: 2.29oz (65g) without battery connector Motor: Pole Count: 4 Stator Lamination Thickness: 0.0078" .2mm Bearings: CNC rated Japanese bearings Dimensions: 1.4 x 2.1" (36 x 53mm) Shaft Diameter: 5mm COMMENTS: *Not intended for operation while submerged in liquid. If unit is operated in wet conditions, rinse with fresh water to remove dirt or corrosives, then fully dry unit. Maximum recommended vehicle weight is 6.5lbs (2.95kg)