The Assioma PRO RS-1 is the lightest single-sided road power meter pedal on the market, weighing just 123.5 g. Built for Shimano SPD-SL cleats, it delivers professional-grade accuracy and performance—powered by a long-lasting battery that offers 60+ hours per charge with zero data dropouts. Its innovative split-body architecture keeps the electronics and battery safely sealed inside the spindle, separate from the pedal body. This design ensures IP67 waterproofing, durability, and simple maintenance. With a slim profile, +53 mm Q-factor, and 10.5 mm stack height, it’s optimized for efficiency and speed on the road. Powered by the IAV Power System, the PRO RS-1 ensures ±1% accuracy, even during sprints or with oval chainrings. It also provides a wide range of advanced cycling dynamics and integrates easily with both Bluetooth and ANT+ devices. Thanks to its modular design, the same spindle can later be upgraded to a dual-sided system or paired with MTB pedal bodies. A smart and precise tool for dedicated road cyclists seeking data-driven training and lightweight performance.
Key Features
- Right pedal without power sensor. - Fully compatible with Shimano® SPD-SL® cleats. - Lightest power meter pedal: only 123.5 g per side. - ±1% accuracy, even with oval chainrings. - Rechargeable battery with 60+ hours of runtime. - Tracks advanced cycling metrics including Platform Center Offset (PCO). - Carbon-fibre tech-polymer pedal body for strength and lightness. - Low stack height: 10.5 mm. - Standard Q-factor: +53 mm. - Modular design for easy transition between road and MTB pedal bodies. - Designed and manufactured in Italy.
Technical Specifications
- SPD-SL® road pedal with power sensor on the left side only. - Weight: 123.5 g (left pedal with sensor), 122.5 g (right pedal without sensor). - Built-in cadence sensor and gyroscope. - Power system: IAV (Instantaneous Angular Velocity-based). - Cycling Dynamics supported: Power, Cadence, PCO, Power Phase (PP), Pedal Smoothness (PS), Torque Effectiveness (TE), Rider Position. - Data transmission: ANT+ and Bluetooth. - Bluetooth shows: Power, Cadence. - Compatible with oval chainrings. - Rechargeable lithium-ion battery with 60+ hours of runtime. - Accuracy: ±1%, with thermal compensation. - Waterproof rating: IP67. - Q-factor: +53 mm. - Pedal stack height: 10.5 mm. - Compatible cleats: Included (art. 773-20-64), Shimano® SM-SH10, SM-SH11, SM-SH12. - Suitable for: Road cycling. - Made in Italy. - Warranty: 2 years
