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Feature

4 poles Hi-torque motor design. CNC machined 6061 T6 billet alumium heatsink can.
High purity copper windings maximizes efficiency. High RPM ABEC5 oversized bearings.
Universal fit all 1/10 brushless cars-multi-mounting system for M3 screws. Precision balanced rotor, smoothness for best reliability and maximum RPM.
Stator - Super Thin (0.35mm) laminations. Removable/replaceable.
Precision engineered for maximum energy conversion. ROAR legal.

Description

Specification:
RPM: 3100KV
Max Current: 56A
Max Watts: 900W
Can Size: 3650
Sensored: No
Can Diameter: 36mm
Can Length: 50mm
Shaft Diameter: 3.175mm
Shaft Length: 15mm
Bullet Connector: 4mm
Weight: 180.8g/6.4oz
Max voltage: 7.4V(2S)-14.8V(4S)

Note: there's some little error from human measuring.

Electric Speed Controller
Features:
Compatible with sensorless brushless motors.
High anti-interference capability.
Using advanced software interface to set up or update the software.
Super smooth and accurate throttle linearity.
Fast response to throttle input.
Mutiple protection features: low voltage cut-off protection, over-heat protection and throttle signal loss protection.
Specifications:
Cont. Current: 60A
Burst Current: 320A/10sec
Battery: 2-3 Cell Lipo / 4-9 Cell NiMh
SBEC: Yes
SBEC Output: 5.8V/3A
Power Supply Plugs: T Male
Motor Plugs: Female 4mm Bullet Connector
Size: 45*35*35mm(with out fan)
Weight: 76.3g /2.68oz

Package size: 10 * 8 * 6.5cm/ 3.9 * 3.1 * 2.5in
Package weight: 288g/10.1 oz

Package list:
1 * 3650 3100KV 4P Sensorless Brushless Motor
1 * 60A Brushless Electric Speed Controller