Tekin Gen4 Spec-R Sensored Brushless Motor (13.5T)

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Tekin Gen4 Spec-R Sensored Brushless Motor (13.5T)
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Price: $109.99

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The Tekin Gen4 Spec-R Sensored Brushless Motor has been engineered for performance. Utilizing the best materials available the SPEC-R has been redesigned to cut weight and reduce resistance, resulting in a purebred Spec racing machine. On Road or Off, the SPEC-R handles all disciplines, providing smooth power and control across the full RPM range. The SPEC-R is competition performance with the speed you need to win. 

The GEN4 motor line features a redesigned, precision stamped and pressed stator to increase efficiency and reduce resistance. The stators are hand-wound with high purity copper wire and machined from 6061-T6 aluminum. The motors can be tuned with optional rotors and are re-buildable, making the GEN4 SPEC-R motor a premium performance power plant designed for the serious racer.


  • 60 Degrees Adjustable Timing Advance
  • SPEC Racing Specific Design
  • CNC Machined 6061-T6 Billet Aluminum Heat Sink Can
  • ?Neodymium Sintered Magnet
  • Precision Engineered for Maximum Energy Conversion
  • High Purity Copper Windings Maximize Conductivity
  • Low Resistance, High Power Solder Tabs
  • Sensored System Ready
  • Anodized End-bell Plates Maximize Corrosion and Wear Resistance
  • High RPM Precision Bearings
  • Oversized Front Bearing
  • Rebuild-able Design
  • Solder-less Sensor PCB Replacement
  • Legal in Major Race Governing Bodies
  • ROAR Approved 
Input Voltage: 1-2S LiPO - 25.5T / 21.5T / 17.5T / 13.5T / 10.5T / 6.5T
Weight: 5.1oz / 145g
Shaft Dimensions: 3.18mm (1/8") x 15.3mm
Motor Diameter: 35.85mm / 1.40"
Motor Length: 50.25mm / 1.978"
Max Operating Temperature: 180°F / 82°C
Bearing Dimensions: Front: 4x13x5mm; Rear: 1/8x3/8x5/32"
Rotor Size: 12.3mm BLACK - 25.5T; 12.5mm BLUE - 21.5T / 17.5T / 13.5T / 10.5T
Rebuildable: Yes

This product was added to our catalog on July 1, 2020

Barry Foster
Verified Owner
Thursday, Mar 25 2021 (about 2 years ago)
Tekin Gen4 Spec-R Sensored Brushless Motor (13.5T)
Tekin sent me a brand new motor on warranty. They have restored my faith. The motor looks solid. Thanks so much Tekin.
Nonoy A Ball
Verified Owner
Friday, Jun 23 2023 (5 months ago)
Tekin Gen4 Spec-R Sensored Brushless Motor (13.5T)
I purchased 2 motors at first. Then an additional 1 after needing to send 1 of the first 2 back to Tekin.

1 motor the timing screw fell off and ended up back inside the motor because of the magnetism. This caused internal damage to the motor. The 3rd motor we purchased to replace this one while it was in for RMA-the 3 can screws fell off after a track day.

The 2nd motor has been running perfect.
Dane Gengler
Verified Owner
Tuesday, Dec 20 2022 (12 months ago)
Tekin Gen4 Spec-R Sensored Brushless Motor (13.5T)
Good little motor. Came with set timing at 30* which is fine for mod motors, but the other stock motors I have purchased previously have had a timing point set whether they are Motiv, Trinity, Maclan or R1. Once putting it on the analyzer and finding its happy place is about 56*, this motor rips. Longevity is the next test.