TQ Unveils HPR40: World's Lightest and Most Efficient E-Bike Motor
Key Insights
TQ's new HPR40 mid-drive motor weighs just 1.17 kg, making it the lightest and most efficient e-bike motor available.
Designed for road and gravel bikes, the HPR40 delivers 40 Nm of torque and 200W peak power, prioritizing seamless integration over raw power.
The motor features TQ's Harmonic Pin-Ring Transmission, reducing noise and friction while enabling instant engagement.
Already integrated into Canyon's Endurace:ONFly, the HPR40 signals a shift toward lightweight, intuitive e-bike systems.
German engineering firm TQ has introduced the HPR40, now claiming the title of the world's lightest and most efficient mid-drive motor for e-bikes. Weighing just 1.17 kg (2.6 lb), the HPR40 is tailored for road and gravel e-bikes, offering 40 Nm of torque and up to 200W of peak power. This marks a significant reduction from its predecessor, the HPR60, which weighed 1.92 kg (4.2 lb). The motor is designed for riders seeking subtle assist rather than brute force, emphasizing efficiency and seamless integration.
The HPR40 is built around TQ's Harmonic Pin-Ring Transmission, a refined drivetrain that eliminates noisy gears and reduces friction. The motor is deeply integrated into the bike's bottom bracket, making it nearly invisible to casual observers. Paired with a 290Wh battery hidden inside the downtube and an optional 160Wh range extender, the total system weight remains under 2.7 kg (6 lbs), one of the lightest fully integrated e-bike systems available.
Control is managed via a hidden handlebar remote and a sleek LED display, reinforcing TQ's philosophy of minimal interference with the rider's experience. The HPR40 is already featured in Canyon's new Endurace:ONFly, a sub-10 kg e-road bike that combines TQ's whisper-soft assist with Canyon's aerodynamic design.
The HPR40 represents a shift in e-bike engineering, moving away from raw power toward lightweight, intuitive systems. For riders balancing analog feel with electric assist, this motor offers a breakthrough. The technology could pave the way for broader adoption in commuter and adventure e-bikes, bringing the industry closer to a future where e-bikes feel indistinguishable from traditional bikes.