This is a Tekin SPEC-R2 Pro 17.5-turn brushless motor, built and tuned by Scott Struble of M.O.B Motorworx.

Scott's in-depth tuning process includes: flushing bearings, application of premium bearing oil, aligning sensors, precision sensor board/rotor shimming, setting most efficient timing/amp draw for the motor.

All M.O.B-tuned motors come with Motolyser and Magnalyser printouts so you have all the information at your fingertips. Out of respect for racer confidentiality, we will not be posting these numbers in the product listing.

Information from Tekin Website: 

PRO - Hand picked stator, hand picked sensor board and includes TT2782 12.5mm SILVER rotor. Setup critical, SILVER rotors are a special extra strong material and can be damaged by excessive heat from over-gearing and over-timing.