Check the listing for details. Surpass Rocket V5R SPEC 21.5T Sensored Brushless Motor. Condition: New. Listed at 79.95 USD. Standard Race SPEC Features: Rocket V5R SPEC 21.5T Sensored Brushless Motor Silver/Black Ultra Low Resistance! BRCA & EFRA ' APPROVED ROAR ' APPROVAL PENDING SURPASS the Competition with Design, Quality and Performance! Specifications: 1/12 & 1/10 SPEC Racing 540 Sensored Brushless Motor Design with Dual Sensor Ports 1/8" (3.175mm) Motor Shaft 17.5T Info: Weight: 160g avg Lipos: 2-3S (Recommended) Kv (RPM/Volt): 2650Kv (This is an average tested at zero degrees of timing) Features: CNC Machined Billet T6 Aluminum Heatsink Can High Purity Copper Windings Maximizes Conductivity New Stator Coating for Better Heat Dissipation and Long Term Corrosion Resistance Removable and Replaceable Stator Extra Thick High Power Easy Solder Tabs Powerful Sintered Neodymium Magnet Designed Rotor Precision Engineered for Maximum Energy Conversion Accurately Mounted Sensors for Best Possible Kv and RPM Compatible with Sensored and Sensorless Speed Controllers (ESC's) Adjustable Timing, Dual Sensor Ports for Easy Installation Includes: Built with Aluminum Stator Screws Includes Steel Stator Screws in Box Includes a 150mm Super Flexible Flat Sensor Wire Comes in a Plastic Padded Storage Box