Moza R21 Ultra Direct Drive Wheel Base

The Moza R21 Ultra Direct Drive Wheel Base is built for precise, high torque sim racing, offering a stable and consistent driving experience. It s designed to give you accurate, real-time feedback from your racing software through a high-performance direct drive motor, translating digital data into physical responses you can feel through the wheel. Equipped with a 21Nm sustained torque output, a high resolution 21-bit magnetic encoder, and an all new flat wire motor design, the R21 Ultra delivers detailed steering input, smooth motion, and reliable force feedback. These technologies work together to give you the level of control required for accurate inputs in both competitive and endurance racing.Here are the key features that define the R21 Ultra s performance and handling:21Nm Direct Drive Motor Output: The industrial grade motor maintains a steady 21Nm of torque output under continuous load using a high efficiency 360W power system, providing stable and realistic force feedback without thermal throttling and ensuring consistent control throughout long duration races.21-bit Magnetic Encoder: This high-resolution 21-bit encoder offers 2,097,152 points of input recognition per revolution, enabling highly accurate detection of wheel position which allows for nuanced steering response and reliable handling through complex track conditions.Zero Cogging Flat Wire Motor Technology: By using flat wire coil construction to reduce cogging torque, this motor delivers smoother and more natural force transitions, improving your ability to make fine steering corrections without unwanted resistance or feedback spikes.Advanced Force Feedback Algorithm: The integrated software and hardware-driven algorithm enhances realism by refining force output in response to terrain and grip levels, allowing you to feel variations in road surface, traction loss, and cornering forces with greater accuracy.iRacing 360Hz Mode: Supporting a 360Hz signal update rate when running iRacing, this feature improves the speed and clarity of force feedback signals, giving you more responsive handling and better control during fast paced race conditions.Flexible Mounting Options: With support for bottom, front, and side mounting configurations, the R21 Ultra fits a wide range of sim racing rigs and cockpit setups, making it easy to integrate into your existing layout with minimal adjustments.CNC Machined Aluminium Housing: The main body is built from CNC machined aluminium alloy which offers improved structural strength and vibration resistance, giving you a solid and durable base that performs reliably under heavy use.Customisable RGB Light Strips: Fitted with dual RGB LED strips capable of displaying 16.7 million colours, the lighting can be configured for telemetry feedback including gear shifts, ABS activation, and traction control status, adding useful visual indicators to your race environment.Quick Release and Accessory Ports: Equipped with a fast action quick release system and multiple ports including connections for pedals, shifters, handbrake, and dashboard components, the unit offers flexibility in setup while reducing cable clutter.Mobile App Integration: Compatible with the Moza mobile app, the R21 Ultra allows wireless tuning and system adjustments, so you can fine-tune your settings without needing to exit your racing session or access software on your PC.The Moza R21 Ultra is built to deliver consistent torque, detailed input recognition, and smooth, uninterrupted force feedback essential for maintaining control during long sessions and demanding race scenarios. Its flat wire motor eliminates cogging for cleaner steering feel, while the 21-bit encoder captures fine input detail with high accuracy. The integrated force feedback algorithm and iRacing 360Hz mode enhance signal response, giving you more precise handling. With a strong aluminium housing, universal rig compatibility, and direct connectivity for key peripherals, this wheel base offers a stable, efficient platform that supports competitive and endurance-level use. It s a practical and capable addition to your sim racing setup, designed to deliver reliable, high-quality performance every time you drive.Compatibility: PC only2 Year manufacturer s warrantyFor further technical information or advice, please email your enquiry to our SIM Racing experts - simracing@demon-tweeks.co.uk or telephone the team direct on +44 (0)1978 666478.