{"product_id":"moza-racing-r21-ultra-dd-wheel-base","title":"MOZA R21 Ultra Direct Drive Wheel Base","description":"\u003cdiv class=\"msw-product-content\" style=\"color:#17191D;line-height:1.65\"\u003e\n\u003cdiv style=\"border-left:4px solid #ED1C24;padding:12px 18px;background:#f4f4f4;border-radius:8px\"\u003e\n\u003cp\u003e\u003cstrong\u003eMOTORSPORTWEBSHOP | MOZA RACING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMOZA R21 Ultra Direct Drive Wheel Base\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe wheelbase is the centre of a force-feedback setup, so compatibility and mounting deserve as much attention as torque.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eChoosing your configuration\u003c\/h2\u003e\n\u003cp\u003eThis listing is for MOZA R21 Ultra Direct Drive Wheel Base. Use the specifications and package contents below to check which components are supplied.\u003c\/p\u003e\n\u003cp\u003eCheck steering-wheel connections, quick-release requirements, cockpit mounting and platform support. Console compatibility must be confirmed for the complete combination of base and wheel.\u003c\/p\u003e\nSustained 21 Nm direct-drive performance with a zero-cogging flat-wire motor and 21-bit magnetic encoder.\n\u003cp\u003eThe MOZA R21 Ultra Direct Drive Wheel Base is designed for advanced PC sim racers who need strong, consistent force feedback across sprint and endurance sessions. Its next-generation flat-wire motor delivers 21 Nm of sustained torque rather than a short peak, while the 21-bit magnetic encoder resolves more than two million positions per revolution. A CNC-machined aluminium housing, intelligent cooling and multiple mounting orientations make the base suitable for rigid cockpits and professional-style installations.\u003c\/p\u003e\n\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eWhy choose this product?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe zero-cogging flat-wire motor delivers sustained 21 Nm torque, preserving detail and resistance during long sessions without relying on a brief peak figure.\u003c\/li\u003e\n\u003cli\u003eA 21-bit magnetic encoder with 2,097,152 positions and 1000 Hz USB refresh rate captures fine steering input and rapid force-feedback changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eProduct details\u003c\/h2\u003e\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eMotor, force feedback and precision\u003c\/h3\u003e\n\u003cp\u003eThe direct-drive motor is engineered to minimise cogging torque, creating smoother low-speed movement and more consistent force feedback through the steering range. MOZA's current force-feedback algorithm reproduces tyre load, road texture, kerb impacts and weight transfer, while the encoder provides the resolution required for small corrections. Supported iRacing setups can also use the published 360 Hz force-feedback mode.\u003c\/p\u003e\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eCooling, housing and safety\u003c\/h3\u003e\n\u003cp\u003eThe base uses a CNC-machined aluminium-alloy housing with intelligent thermal monitoring and torque regulation. This management system is designed to maintain stable output during demanding use. Hands-off Protection can detect when the wheel is released and stabilise the steering response, while two RGB light strips can display configurable colours and telemetry effects.\u003c\/p\u003e\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eMounting, connections and software\u003c\/h3\u003e\n\u003cp\u003eFront, side and bottom mounting are supported, allowing the R21 Ultra to fit different cockpit plates and brackets. Rear ports are provided for power, PC, pedals, dashboard, shifter, handbrake and an optional emergency-stop switch. A compatible steering wheel is required; the \u003ca href=\"\/products\/moza-racing-ks-pro-steering-wheel\" target=\"_blank\" rel=\"noopener\"\u003eMOZA KS Pro Steering Wheel\u003c\/a\u003e is one verified current option. MOZA Pit House and the supported mobile app provide firmware, force-feedback, steering-angle and lighting configuration.\u003c\/p\u003e\n\n\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003ePlatform: Windows PC.\u003c\/p\u003e\n\u003cp\u003eSteering-wheel ecosystem: supports current compatible MOZA wheels through the MOZA quick-release system.\u003c\/p\u003e\n\u003cp\u003eRequirements: a rigid mounting solution and compatible steering wheel are required. Pedals, steering wheel, cockpit bracket and emergency-stop switch are not included.\u003c\/p\u003e\n\n\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eSpecifications\u003c\/h2\u003e\n\nTorque\n21 Nm sustained\nMotor\nZero-cogging flat-wire\nEncoder\n21-bit magnetic\nResolution\n2,097,152 PPR\nUSB refresh rate\n1000 Hz\nRated power\n360 W\nInput\n110–220 V AC to 36 V DC\nDimensions\n248.8 × 140 × 135 mm\nWeight\n9.0 kg\nMounting\nFront, side and bottom\n\n\n\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eWhat's in the box?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMOZA R21 Ultra Direct Drive Wheel Base × 1\u003c\/li\u003e\n\u003cli\u003ePower adapter × 1\u003c\/li\u003e\n\u003cli\u003ePower cord × 1\u003c\/li\u003e\n\u003cli\u003eData cord × 1\u003c\/li\u003e\n\u003cli\u003eBolt kit × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eIs the 21 Nm figure sustained or only a peak?\u003c\/h3\u003e\n\u003cp itemprop=\"text\"\u003eMOZA specifies 21 Nm as sustained torque, intended to remain available during extended and demanding sessions.\u003c\/p\u003e\n\n\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eDoes the wheel base include a steering wheel?\u003c\/h3\u003e\n\u003cp itemprop=\"text\"\u003eNo. The R21 Ultra is supplied as a wheel base and requires a compatible steering wheel with the correct MOZA quick-release connection.\u003c\/p\u003e\n\n\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eWhich mounting methods are supported?\u003c\/h3\u003e\n\u003cp itemprop=\"text\"\u003eMOZA provides mounting provisions for front, side and bottom installation. The selected cockpit or bracket must be rated for high-torque direct drive.\u003c\/p\u003e\n\n\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eWhat can be configured in MOZA Pit House?\u003c\/h3\u003e\n\u003cp itemprop=\"text\"\u003ePit House supports firmware, force-feedback strength and filters, steering angle, hands-off protection, lighting and connected MOZA device settings.\u003c\/p\u003e\n\n\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eCan pedals, a shifter and a handbrake connect to the base?\u003c\/h3\u003e\n\u003cp itemprop=\"text\"\u003eYes. Dedicated rear ports are provided for compatible pedals, dashboard, shifter, handbrake and an optional emergency-stop switch.\u003c\/p\u003e\n\n\n\u003cp\u003ePlease note: we make every effort to display products as accurately as possible. Colours, materials and finishes may vary slightly in real life due to studio lighting, screen settings, ambient light and product characteristics.\u003c\/p\u003e\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eExplore compatible equipment\u003c\/h2\u003e\n\u003cp\u003eBuild your selection around the specifications of MOZA R21 Ultra Direct Drive Wheel Base. Browse \u003ca href=\"\/collections\/moza-racing\" target=\"_blank\" rel=\"noopener\"\u003eMOZA Racing\u003c\/a\u003e, \u003ca href=\"\/collections\/direct-drive-wheelbases\" target=\"_blank\" rel=\"noopener\"\u003eDirect Drive Wheelbases\u003c\/a\u003e, \u003ca href=\"\/collections\/sim-racing-steering-wheels\" target=\"_blank\" rel=\"noopener\"\u003eSim Racing Steering Wheels\u003c\/a\u003e, \u003ca href=\"\/collections\/wheelbase-mounts-and-clamps\" target=\"_blank\" rel=\"noopener\"\u003eWheelbase Mounts \u0026amp; Clamps\u003c\/a\u003e to compare related equipment. Check each item's stated compatibility before combining components.\u003c\/p\u003e\n\u003ch2 style=\"border-bottom:2px solid #ED1C24;padding-bottom:8px;margin-top:24px\"\u003eBefore you order\u003c\/h2\u003e\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eWhich version will I receive?\u003c\/h3\u003e\n\u003cp\u003eThis listing is for MOZA R21 Ultra Direct Drive Wheel Base. Use the specifications and package contents below to check which components are supplied.\u003c\/p\u003e\n\u003ch3 style=\"font-size:1.1em;margin-top:18px\"\u003eWhat should I check when adding this to my setup?\u003c\/h3\u003e\n\u003cp\u003eCheck steering-wheel connections, quick-release requirements, cockpit mounting and platform support. Console compatibility must be confirmed for the complete combination of base and wheel.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"MOZA Racing","offers":[{"title":"Default Title","offer_id":61088222871886,"sku":"RS090","price":799.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/3765\/1278\/files\/MOZAR21UltraDDWheelBase_Unleash21NmofRacingPower-Frontside.webp?v=1791290068","url":"https:\/\/motorsportwebshop.eu\/products\/moza-racing-r21-ultra-dd-wheel-base","provider":"Motorsportwebshop.com","version":"1.0","type":"link"}