What it is
The R21 Ultra is Moza’s answer to whether it could build a real flagship rather than a competent value one. The motor is the new zero-cogging flat-wire architecture that runs across the Ultra line, the encoder is 21-bit (around two million points), the chassis is the bigger Ultra-family unit with proper thermal headroom, and the QR is the same Moza QR that runs across the whole R-range. PC only.
What struck me on the Ultra is that Moza is properly back at the high end. The hardware finally produces the kind of refinement that rivals Simucube on feel now, where before it only rivalled them on price, and the new motor is a real step. For me it moves the R-range from “good for the money” to a flagship I’d shortlist on merit.
Who it’s for
You’re the right buyer if you race PC and you want a flagship you’ll keep for five years or more without feeling the itch to upgrade. The R21 Ultra has the newest hardware in the Moza catalogue, the chassis is built for long ownership, and the rim and pedal range around it has matured to where it competes with Fanatec on breadth.
You’re the right buyer if you’re stepping up from an R12 V2 or R16 V2 and you want the biggest upgrade Moza offers without paying R25 Ultra money. Every rim, pedal, dash and shifter you own carries straight across, and the difference in feel between a mid-tier R-range base and the Ultra motor is the kind of thing you notice on the first lap.
You’re the right buyer if you run endurance. The chassis runs cooler than the older R21 under sustained heavy FFB, which matters in iRacing 24-hour racing, where smaller bases eventually start to fade.
You’re the wrong buyer if you race on console. The standard R21 Ultra is PC only, with no firmware path to change it. The R25 Ultra has a single Xbox-licensed rim route - the only console story in the whole Moza catalogue.
In use
The first thing I noticed was the off-centre detail. The flat-wire zero-cogging motor gives you a smoother continuous force at low torque than the older R-range motors, and it shows up most in the cars where you’re reading load through your hands rather than reacting to events. Slip arrives as a gradient, front-end build is clean, and the Ultra has closed the gap to Simucube on exactly the part of the envelope that used to be Simucube’s clearest advantage. That’s the bit that surprised me.
The 21 Nm peak gives you headroom for everything you’re likely to drive. GT3, road cars and touring cars never come close. Heavy formula and LMP at full stiffness sit comfortably inside the envelope, and the Ultra chassis has the cooling to keep that up through long stints without fade.
Pit House does the tuning. It’s not True Drive, but it’s a real tool now, and the per-title presets are broad enough that you can drop into most major sims and start with something usable. The macro controls are intuitive, and the live telemetry view is enough to diagnose clipping properly.
What to watch out for
There’s a documented firmware regression affecting Hands-Off Protection Mode 2. Some owners found the new behaviour disruptive, and the workaround is to toggle the mode off in Pit House until Moza ship the fix. Not a deal-breaker, but worth knowing before you buy.
The R25 Ultra sits at the next tier with 4 extra Newton-metres and the True Torque sensor architecture. If you race heavy LMP at full stiffness most of the time, the R25 is probably the better buy. If you don’t, the R21 Ultra is the more sensible pick - most cars don’t ask for more than 21 Nm anyway.
Console support? None on the standard R21 Ultra. The R25 Ultra has a single Xbox rim route, and that’s the only console story in the current Moza line.
Where it sits in 2026
At roughly $699 / £550 the R21 Ultra is the most aggressively priced 21 Nm flagship on the market and the comparison set above and below is what makes the case for buying.
Against the in-house R25 Ultra at around $899 / £710 direct from Moza, the R25 adds 4 Nm of peak torque and the True Torque closed-loop sensor for roughly $200 / £160 more. If you race heavy LMP or formula at full FFB regularly, the R25 is the cleaner buy. If you don’t, the R21 Ultra is where the Ultra line’s value peaks.
Against the in-house R16 V2 one tier down at around $699 / £550, the price is the same but the R21 Ultra wins on the newer motor architecture, the 21-bit encoder, and the larger chassis. For a buyer choosing between them today, the R21 Ultra is the better long-term spend at the same money.
Against the Simucube 2 Pro at around $1,589 / £1,255, the R21 Ultra undercuts it by roughly $890 / £700 in the same torque tier. Simucube wins on True Drive software depth and on the six-year long-term ownership signal. The R21 Ultra wins on price by a wide margin and on the newer motor architecture. For a PC-only buyer who isn’t wedded to Simucube on principle, the R21 Ultra is the spreadsheet pick.
Verdict
If you race PC and you want a flagship that competes on refinement, not just on price, the R21 Ultra is the right buy. The Ultra motor is a real step over the original R21, the chassis runs cooler on long stints, and Pit House has matured enough that the software gap to Simucube no longer matters for most drivers.
If you specifically need the absolute torque ceiling and you race heavy LMP at full stiffness, buy the R25 Ultra instead.
And if you race on console, the R21 Ultra has no route at all - the only console story in the Moza catalogue is the R25 Ultra’s single Xbox rim. But on PC this is the sweet spot of the Ultra line: flagship feel, sane money, and hardware you’ll still be happy with in five years. Bolt it down and go enjoy it.