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Description
MOZA R21 Ultra Direct Drive Wheelbase
The MOZA R21 Ultra direct drive wheelbase is built for sim racers who want maximum immersion, precision, and confidence behind the wheel.
With a sustained 21Nm of torque, every steering input feels authentic and connected to the track. Subtle corrections are delivered with clarity, while heavy forces remain smooth and controlled, giving you a true sense of what the car is doing at all times.
At its core is a 21-bit magnetic encoder that tracks even the smallest steering movements with extreme accuracy. Combined with MOZA’s zero-cogging flat-wire motor, the result is clean, uninterrupted force feedback that stays consistent.
Add intelligent cooling, native ecosystem connectivity, and customisable RGB lighting, and the R21 Ultra is a professional-grade direct drive wheelbase designed to perform at the highest level.
21nm torque
zero cogging
iRacing 360Hz support
2 year warranty
Key features
- Sustained 21Nm torque output built for professional sim racing
- Pinpoint steering accuracy with a high-resolution 21-bit magnetic encoder
- Advanced zero-cogging flat-wire motor for more natural control
- Intelligent thermal management to maintain peak performance
- High-speed CPU for refined force feedback tuning
- CNC-machined aluminium unibody for exceptional rigidity and durability
- Fully adjustable RGB lighting to customise your racing setup
- Native ports for pedals, dashboard, shifter, and handbrake
- Multiple mounting options for flexible rig compatibility
- Automatic hands-off detection with fast wheel centering for safety
How the R21 Ultra compares to other direct drive wheelbases
Many direct drive wheelbases focus on headline torque numbers alone. The MOZA R21 Ultra direct drive wheelbase goes further by delivering that power with consistency, precision, and long-session reliability.
While some wheelbases can feel aggressive but fade over time, the R21 Ultra maintains a stable 21Nm output through intelligent thermal management. Its zero-cogging flat-wire motor and high-resolution encoder provide smoother, more detailed feedback than systems that rely on traditional motor designs or lower encoder resolution.
For sim racers who value confidence, control, and performance that holds up under pressure, the R21 Ultra stands out as a more refined and dependable direct drive wheelbase.
But if you’re looking for higher torque performance, we recommend you look at MOZA’s flagship R25 Ultra True Torque wheelbase.
Sustained 21Nm torque output
Smooth, predictable control starts with the R21 Ultra’s zero-cogging flat-wire motor.
Every steering input feels steady and continuous, without sudden spikes or rough transitions. Torque delivery remains consistent through fast corners, heavy braking zones, and long stints, helping you stay connected to the car and the track.
Built around an industrial-grade motor, the R21 Ultra holds a true 21Nm of sustained torque, even during intense racing sessions.
New force feedback algorithm with iRacing 360Hz mode
MOZA’s engineers refined the R21 Ultra’s force feedback algorithm to deliver cleaner, more detailed steering information.
You’ll feel surface changes, tyre load, and weight transfer with greater clarity, so you’re never guessing what the car is doing. Sensitivity adapts smoothly to your driving style, giving you precise control across different cars and disciplines.
When paired with iRacing’s 360Hz mode, feedback becomes faster, sharper, and more realistic, boosting confidence through every corner.
Smart cooling system
High torque generates heat, but the R21 Ultra is designed to stay consistent.
Its intelligent thermal management system actively monitors temperature and adjusts output to maintain stable performance. Even during long endurance races, force feedback remains strong and reliable.
That means no fading, no sudden drops, and no mid-race interruptions.
Native ecosystem integration
A clean, reliable setup makes racing more enjoyable, and the R21 Ultra delivers exactly that.
With built-in ports for MOZA pedals, dashboards, shifters, and handbrakes, everything connects directly to the wheelbase.
This reduces cable clutter, improves reliability, and shortens setup time so you can focus on driving.
Frequently asked questions
What’s the difference between the R21 Ultra and the R25 Ultra?
The main difference is torque output and sensing technology. The R21 Ultra delivers 21Nm of sustained torque with a high-resolution encoder and zero-cogging motor. The R25 Ultra True Torque increases torque to 25Nm and adds true torque sensing for even greater measurement accuracy and realism during high-force driving.
Is 21Nm enough for realistic sim racing?
Yes. For most sim racers, 21Nm provides more than enough force feedback to feel detailed road texture, tyre load, and weight transfer. The R21 Ultra is already well beyond entry-level and mid-range wheelbases in terms of realism and strength.
Who should consider upgrading from the R21 to the R25?
Racers who want maximum torque headroom, true torque measurement, and the highest possible fidelity during endurance or professional-level racing may prefer the R25 Ultra. For everyone else, the R21 Ultra offers exceptional performance without the need for 25Nm output.
Is the R21 Ultra too powerful for casual racing sessions?
Not at all. While it delivers 21Nm of torque for professional performance, output can be easily reduced in software for shorter or more relaxed races.
How does the R21 Ultra handle long endurance races?
The intelligent thermal management system keeps torque output consistent for hours. Real-time monitoring prevents overheating and performance drop-offs.
Do I need extra adapters or hubs to connect my setup?
No. The R21 Ultra includes dedicated ports for pedals, dashboards, shifters, and a handbrake, keeping your setup simple and reliable
Will I notice a difference in steering precision?
Yes. The 21-bit magnetic encoder tracks over two million data points per rotation, translating micro-adjustments into precise, detailed feedback.
Is it difficult to mount the R21 Ultra on my rig?
No. Bottom, front, and side mounting options make it compatible with a wide range of cockpits, and the rigid aluminium housing stays solid even under full torque.
What safety features are included?
Hands-off detection automatically stops oscillation and recentres the wheel if you release it, helping reduce the risk of injury.
Specifications
Dimensions
248.8 × 140 × 135 mm
Housing Material
Aluminum alloy
Rear Cover Material
Plastic
Coupler Material
Aluminum alloy
Encoder Type
21-bit magnetic encoder
Encoder Resolution
2,097,152 PPR
Maximum Torque
21Nm
RGB Light Strips
2
Mobile App Support
Yes
Quick Release
Supported
Ports
Power, PC, Pedals, Dashboard, Shifter, Handbrake, Emergency Stop Switch
Mounting Options
Bottom, front, and side mounting supported
Racing simulator compatibility:
Automobilista
Automobilista 2
BeamNG.Drive
Euro Truck Simulator 2
F1 2018
F1 2019
F1 2020
F1 2021
F1 22
F1 23
F1 24
F1 25
Forza Horizon 4 (Microsoft Store Edition)
Forza Horizon 5
Forza Motorsport
iRacing
KartKraft
Le Mans Ultimate
Live For Speed
MudRunner
Project CARS
Project CARS 2
Project CARS 3
RaceRoom Racing Experience
Richard Burns Rally
rFactor 2
WRC 9
WRC 10
WRC Generations
Wreckfest
American Truck Simulator
Click here to download the R21 manual
What’s In The Box?
MOZA R21 Ultra Direct Drive Wheelbase
Power Supply
Power Cord
Data Cable
Installation acceessories
Quick start guide & Warranty card
MOZA Stickers
Reviews
Warranty
MOZA Racing products are covered by a 2 year limited manufacturer warranty and our own dedicated Aussie support team. You can race with confidence knowing help is just a call or email away. This warranty covers you against product defects.
Every MOZA Racing product sold by Gamer Gear Direct is 100% genuine and sourced directly from MOZA Racing's official distributors. You get full warranty coverage and local support from our team of simulation experts.
Shipping
Orders are typically processed within 1–2 business days and shipped via trusted Australian courier partners.
Estimated delivery times after dispatch:
- VIC: 2–4 business days
- NSW: 2–4 business days
- ACT: 3–5 business days
- QLD: 2–4 business days
- SA: 2–4 business days
- WA: 4–10 business days
- NT: 4–10 business days
- TAS: 4–10 business days
Click here to view our full shipping & handling policy
100 Day FREE Returns
Changed your mind? No problem! You can return unused, unopened items within 100 days of your order date, provided they’re in original packaging and resaleable condition. Better still, we'll cover the return shipping!
All Gamer Gear Direct products are backed by Australian Consumer Law and include a minimum 12-month Australian warranty. If there’s an issue with your product, our team is here to help and will work to make it right.
Click here to view our full returns policy.
Why Buy From Us?
Authorised Australian dealer
Gamer Gear Direct is an authorised Australian dealer for every brand we sell and is trusted by over 20,000 customers nationwide.
This means every product is 100% genuine, sourced through approved channels, and supported locally.
Fast local shipping
We ship directly from Australian warehouses, with most orders leaving within 1–2 business days.
This ensures faster delivery times and reliable tracking from dispatch to your door.
Hassle-free 30-day returns
Changed your mind? Eligible items can be returned within 30 days provided they’re unused, unopened, and in original packaging. We keep the process clear and straightforward.
Genuine Australian warranty
Every product we sell is covered by a comprehensive Australian warranty, backed by both the manufacturer and Australian Consumer Law.
You won't be left dealing with overseas support channels.
Expert support you can trust
Whether you need product advice, compatibility guidance, or after-sales support, you’re dealing with people who know the sim and gaming gear we sell inside and out.
Our sim & gaming specialists are here to make things easy. With Gamer Gear Direct you’ll get:
- Expert guidance on choosing the right gaming gear for your goals and budget
- Personalised setup advice tailored to your space and gaming needs
- Smart gear pairing suggestions for PCs, consoles, monitors, keyboards, controllers and accessories
- Dedicated account representative for ongoing support
Call us on (03) 9961 0240, talk to our gaming experts on live chat or email us: support@gamergeardirect.com.au and one of our knowledgeable experts will help you.
Trusted by professionals
The brands we stock are trusted at the highest level of performance across motorsport, golf, and aviation. This includes elite professionals such as Oscar Piastri, Lando Norris, Max Verstappen, and Bryson DeChambeau.
The same simulation technologies are used for training, preparation, and skill development at the top level — giving you access to pro-grade equipment built for accuracy, realism, and reliability.