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MOZA R21 Ultra

Manufacturer name: MOZA R21 Ultra Direct Drive Wheel Base

MOZAWheelbasesPC
Peak torque
21 Nm
Encoder resolution
21-bit

The MOZA Racing R21 Ultra Direct Drive Wheel Base is a direct-drive wheelbase for PC. It delivers 21 Nm of peak torque and 21 Nm of sustained torque, uses a 21-bit encoder, and supports quick release. It can be mounted at the front, side, or bottom, and weighs 9.0 kg.

Store prices below for United States, United Kingdom, Europe. Where to buy

Specifications

Motor typeDirect drive
Peak torque21 Nm
Sustained torque21 Nm
Encoder resolution21-bit
Rated power360 W
Quick releaseSupported
MountingFront, side, and bottom mounting supported (optional adjustable bracket available)
Dimensions248.8 x 140 x 135 mm
Weight9 kg
PlatformsPC

Specs from the MOZA product page, checked Nov 13, 2026. Fields the manufacturer doesn't publish are left out.

Where to buy

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How it compares

Among wheelbases on this site whose manufacturer publishes the figure. Spec ranks only.

  • Peak torque 21 Nm: 9th highest of 28 wheelbases with a published figure.
  • Sustained torque 21 Nm: 4th highest of 13 wheelbases with a published figure.
  • Encoder resolution 21-bit: tied 12th highest of 22 wheelbases with a published figure.
  • Weight 9 kg: 6th highest of 22 wheelbases with a published figure.

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