Parts/Electric power/Brushless motors/Tekin Gen4 Spec-R Sensored Brushless Motor (10.5T)
Tekin Gen4 Spec-R Sensored Brushless Motor (10.5T)
Tekin

Tekin Gen4 Spec-R Sensored Brushless Motor (10.5T)

Part # TEKTT27655.0(2)
Where to buy
$109.99
AMain Hobbies
Seen Oct 12, 2026
$109.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

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.


Features:
  • 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
  • Over-sized Front Bearing
  • Rebuild-able Design
  • Solder-less Sensor PCB Replacement
  • Legal in Major Race Governing Bodies
  • ROAR Approved
Specifications:
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
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews5.0 · 2 reviews

Matt MoeVerified owneron Tekin Gen4 Spec-R Sensored Brushless Motor (10.5T)

The main thing I do not like is the motor does not come pre-shimmed. The shaft has a lot of slop in it and it comes with a bag of 5 teflon shims. I took the motor apart straight out of the box and threw 4/5 shims right on the end of the shaft but it could have taken all 5. I will take it apart again to set it up correctly but I really wish they installed the shims from factory to get it close to a perfect setup.

2 found this helpful
Joey BallVerified owneron Tekin Gen4 Spec-R Sensored Brushless Motor (10.5T)

I have run a G3 for a while now. I wanted try the G4 it see how much different it would be. The G4 is faster, with more torque. I’m really happy with the motor!

1 found this helpful

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