Ventus Ryuga 81 kW

Unleash the raw power of your e-bike: the Ventus Ryuga 81 kW (RGA81) transforms standard models into high-performance monsters. With up to 81 kW peak power (with 96 V battery) and 114 Nm torque (at 1400 A), this hairpin motor sets new standards: compact, efficient, and uncompromising.

Extreme performance at the touch of a button

60 kW at 72 V, 81 kW at 96 V, the Ryuga delivers explosive acceleration. The peak torque of 114 Nm (1400 A) or 73 Nm (850 A) catapults you from a standing start. Tested up to 186 km/h (96 V), made for adrenaline junkies.

Efficiency meets robustness

Up to 93% efficiency with natural air cooling. IP67 protection, insulation class 250 °C, and NTC temperature sensor ensure reliability under extreme conditions. Weighs only 12.5 kg with dimensions of Ø 180 × 170 mm, power without ballast.

Precision in every rotation

14,000 RPM, KV 83.3, 5 pole pairs, and ABZ+P encoder guarantee millimeter-precise control. The 16 mm² phase conductors can withstand the highest currents. Hairpin technology minimizes losses and maximizes durability.

Plug & Play for top models

Compatible with Sur-Ron Ultra Bee. Direct installation, no modifications to the bike necessary.