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Moza R25 Ultra direct-drive wheel base, matte black finish, dual RGB light strips

Moza

Moza RS091 R25 Ultra 25 Nm driving simulator

SKU CH-8JPR-2W4VC MPN RS091

A direct-drive wheel base delivering 25 Nm sustained torque with a 0.1 % real-time torque sensor, 21-bit magnetic encoder at 2 097 152 PPR, zero-cogging flat-wire motor, 10 Nm/ms slew rate.

  • Sustained 25 Nm torque holds peak force through long races
  • Real-time torque sensor at 0.1 % accuracy sharpens every input
  • Zero-cogging flat-wire motor removes notchiness for pure road feel
  • 21-bit encoder with 2097152 steps resolves the tiniest steering changes
  • 600 MHz CPU runs Nexgen 4.0 FFB for faster, clearer force feedback

25 Nm direct-drive wheel base

The Moza RS091 R25 Ultra is a direct-drive wheel base built for serious sim racers who demand sustained high torque. Its custom flat-wire motor delivers a continuous 25 Nm output without thermal throttling during long sessions. The unit targets enthusiasts moving up from belt or gear systems who need precise, immediate force feedback.

Zero-cogging motor with real-time torque sensing

A 21-bit magnetic encoder provides over 2 million steps per revolution for fine-grained positional accuracy. The real-time torque sensor operates at 0.1 % accuracy and 2 kHz response frequency, capturing subtle steering inputs instantly. Dual RGB strips offer customizable telemetry display for gear shifts, ABS activity, traction control and flag alerts.

Nexgen 4.0 FFB engine on 600 MHz CPU

The advanced force-feedback algorithm runs on a high-performance processor to enhance clarity, smoothing and dynamic response. Intelligent thermal management and hands-off detection with auto-centre or safety cut protect the hardware under sustained load. MOZA claims an industry-leading torque slew rate of 10 Nm/ms for immediate force application.

Highlights

  • Sustained 25 Nm torque holds peak force through long races
  • Real-time torque sensor at 0.1 % accuracy sharpens every input
  • Zero-cogging flat-wire motor removes notchiness for pure road feel
  • 21-bit encoder with 2097152 steps resolves the tiniest steering changes
  • 600 MHz CPU runs Nexgen 4.0 FFB for faster, clearer force feedback

Specifications

No published specifications for this item yet.

Questions about this item

How much sustained torque does the R25 Ultra deliver?

The wheel base provides a sustained 25 Nm of torque, maintaining consistent force output even during prolonged racing sessions.

What physical space and mounting pattern does the base require?

The unit is a direct-drive wheel base designed for sim rigs; it mounts via a standard bolt pattern and needs enough clearance for the motor housing and dual RGB light strips.

How do I install the R25 Ultra and what step is often missed?

Secure the base to your rig, connect power and USB to the PC, install the MOZA Pit House software, then run the firmware update and calibration routine — skipping calibration leaves the torque sensor uncalibrated.

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