MOZA R21 Ultra Direct Drive Wheel Base
21Nm sustained torque DD base with zero-cogging motor, 21-bit encoder, and advanced force feedback control
The MOZA R21 Ultra is a professional-grade 21Nm direct drive wheel base engineered for uncompromised realism, precision, and endurance performance. Designed for serious sim racers, it delivers sustained high-torque output with exceptional smoothness and control.
At its core, the R21 Ultra features a next-generation zero-cogging flat-wire motor system that eliminates torque ripple for ultra-smooth force feedback. Combined with a high-resolution 21-bit magnetic encoder, it captures every steering input with extreme precision, from subtle road texture to aggressive racing maneuvers.
Built from CNC-machined aluminum and enhanced with intelligent thermal management, the R21 Ultra maintains consistent performance even under long endurance racing sessions. Dual RGB lighting strips add customizable telemetry-based visual feedback for a fully immersive setup.
Key Features
21Nm sustained torque for professional endurance racing performance
Zero-cogging flat-wire motor for ultra-smooth force feedback
21-bit magnetic encoder with 2,097,152 PPR resolution
Advanced force feedback algorithm with refined tuning profiles
CNC-machined aluminum alloy housing for maximum rigidity
Dual RGB light strips with 16.7 million color customization
iRacing 360Hz support for ultra-low latency response
Intelligent thermal management for stable long-session performance
Flexible mounting options: front, side, and bottom support
Specifications
Product Type: Direct drive wheel base
Platform: PC
Drive System: Direct Drive
Maximum Torque: 21 N·m
Rated Power: 360W
Encoder Type: 21-bit magnetic encoder
Encoder Resolution: 2,097,152 PPR
Input Voltage: 110V–220V AC → 36V DC
Housing Material: Aluminum alloy
Rear Cover Material: Plastic
Coupler Material: Aluminum alloy
USB Refresh Rate: 1000Hz
RGB Lighting: Dual strip (16.7M colors)
Weight: 9.0 kg
Dimensions: 248.8 × 140 × 135 mm
Mounting: Front, side, and bottom supported
Emergency Stop: Optional
Compatibility
Compatible with MOZA ecosystem including wheels, pedals, shifters, and accessories
Works with PC-based sim racing titles including endurance and competitive simulators
Fully supported by MOZA Pit House configuration software
Supports multiple mounting orientations for professional rig integration
Engineered for elite-level sim racing with sustained high torque, advanced thermal stability, and ultra-precise force feedback performance
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