HobbyWing Xerun 4274SD sensored Black Edition 2200KV

XERUN-4274SD 1/8 Monster Powerful competition
4 Features

4.1 Sensor motor has the best control feeling and best performance, excellent for 1/8 scale competition.
4.2 4 poles rotor, high efficiency (>90%), the additional heat-sink is unnecessary in most applications.
4.3 New design with lighter weight but bigger torque.
4.4 Higher power, faster acceleration and higher top speed.
4.5 Top quality materials:
Aluminum shell (case)
High quality magnets
Copper wires of high temperature endurance
Good quality bearings
4.6 Anti-broken rotor with special workmanship.

Some motors have got ROAR approval.
(http://www.roarracing.com/?page_id=251)

Specifications:
KV 2200
Diameter 41.9 mm
Length(without Shaft) 74 mm
Shaft diameter 5 mm
Shaft Lenghth 18 mm