MOZA R21 Ultra Direct Drive Wheelbase

The Pinnacle of MOZA Performance

The MOZA R21 Ultra is the ultimate expression of direct drive technology. Engineered for professional simulation, it combines a massive 21Nm of sustained torque with a groundbreaking new motor architecture. Housed in a sleek, industrial-grade aluminum chassis, the R21 Ultra delivers force feedback with a level of smoothness and detail that sets a new industry standard.

Next-Gen Flat-Wire Motor Technology

The secret behind the R21 Ultra's performance is its revolutionary flat-wire servo motor. Unlike traditional round-wire motors, this advanced design (commonly found in high-performance EVs) maximizes copper fill rate and efficiency. The result is a high-torque motor that virtually eliminates cogging and torque ripple, providing an incredibly smooth, organic steering feel even at maximum force.

21-Bit Precision & Industrial Build

Power is nothing without control. The R21 Ultra utilizes a 21-bit ultra-high-resolution encoder (2,097,152 pulses per revolution) to translate the motor's raw power into precise, nuanced details. The entire unit is encased in an aviation-grade CNC-machined aluminum alloy body, acting as both a rigid structural mount and an efficient heatsink for the intelligent cooling system.

• 21Nm Peak Torque: Delivers massive, sustained power to simulate the heaviest steering loads and most violent track impacts.
• Zero-Cogging Flat-Wire Motor: Advanced motor tech ensures the smoothest possible rotation with zero granular feel.
• 21-Bit Encoder: Professional-grade resolution captures every micro-correction and texture.
• Aviation-Grade Aluminum: A rigid, single-piece CNC aluminum chassis ensures zero flex and superior durability.
• Intelligent Temperature Control: Real-time monitoring ensures the base remains cool and consistent during endurance races.
• MOZA Pit House: Fully compatible with MOZA's advanced software suite for one-click presets and deep FFB tuning.

Technical Specifications