Item No NVK-3527 HV Brushless Motors Hit the Tracks Enjoy awesome torque, a powerful rotor and monster horsepower with Novak's HV High-Voltage Brushless Motors with 5mm Shafts. HV MOTOR WINDS Novak's HV Brushless Motors with 5mm Shafts are available in three motor winds: HV5.5 High-Voltage Brushless Motor with 5mm Shaft has superb control, and excels in racing and bashing applications (#3525). HV6.5 High-Voltage Brushless Motor with 5mm Shaft is the best all-around-motor with a great balance between power and run time. It also shines in racing and bashing applications (#3526). HV7.5 High-Voltage Brushless Motor with 5mm Shaft has incredibly smooth power delivery, making it the easiest to drive, and is recommended for users looking for the longest possible run times (#3527). HV BRUSHLESS MOTORS WITH 5MM SHAFTS In addition to its already impressive features, including awesome starting torque, low-speed driveability, and no cogging for smooth acceleration and smooth coasting, the HV Series has been fitted with a rugged 5mm output shaft for maximum resilience and race life. The HV Series is ideal for monster trucks,converted electric 1/8-scale vehicles* and vehicles requiring massive power output. Additionally, the motors are sensor-based, so they always know the position of the rotor, which provides excellent starting torque and continuous synchronization for smooth, controlled low-speed driveability and consistent brakes. Simply stated, it means no uncontrolled bursts of power or delays! HV-Series of motors also features a shielded sensor cable with sheathed sensor wires and a completely rebuildable design. RECOMMENDED GEARING FOR TRAXXASR E-MAXX™ AND E-REVO™ For longevity of your motor, it is recommended to use a 12-tooth pinion gear, such as Novak's 5mm Mod 1 Hardened Steel Pinion Gear -- 12T (#5101). The below table is recommended only for maximum gearing. * Novak's HV 550-Sized Brushless Motors are not approved for ROAR-sanctioned 1/8-scale racing. HV BRUSHLESS MOTOR FEATURES Ideal for converted electric 1/8-scale vehicles* and vehicles requiring massive power output Rugged 5mm output shaft for improved reliability Shielded sensor cable with sheathed sensor wires Compatible with Novak's Mod 1 hardened Steel Pinion Gears (#5100-5110) and 32-Pitch Steel Pinion Gears(#5152-5157) Aluminum ribbed end bells for additional cooling and weight reduction Completely rebuildable design: user-replaceable rotor (#5914) front end bell/bearing and rear bearing (#5917) Direct-solder wiring tabs for flexible soldering options Easily fits in TraxxasR E-Maxx™, TraxxasR E-Revo™, HPIR E-Savage™ and KyoshoR Twin Force™ One HV Brushless Motor with 5mm Shaft replaces two 550 brushed motors Sensor-based technology for excellent low-speed driveability Virtually Maintenance-free Specifically designed for R/C vehicles Completely enclosed motor Provides longer run times and faster top speed compared to stock brushed system Thermal Overload Protection when used with the Novak HV Pro Brushless ESC Excellent low-speed driveability No cogging Ball bearings HV BRUSHLESS MOTOR SPECIFICATIONS Number of Turns: 5.5 (#3525), 6.5 (#3526), 7.5 (#3527) Design: Sensor-based Magnet: One-piece, multi-pole neodymium Watts**: 800 (#3525), 730 (#3526), 620 (#3527) KV (unloaded): 3,700 (#3525), 3,400 (#3526), 3,000 (#3527) Motor Size: 2.84"; 72.1 mm (Length); 1.41"; 35.8 mm (Diameter) Shaft Diameter: 5 mm Motor Weight: 8.36 oz. (295 grams) Performance: Approx. 20% longer run-times Product features and specifications subject to change. **Voltage determined at 14.4 volts. E-Maxx™ and E-Revo™ are registered trademarks of Traxxas CorporationR. Twin Force™ is a registered trademark of KyoshoR. E-Savage™ is a registered trademark of HPIR.