Left-side measurement
Left × 2 = estimated total powerA straightforward approach for training with your existing Shimano crankset, or a complete Rotor INpower setup.
Browse single-sided options →
Inspider is a power meter spider that fits directly onto your Rotor crankset, easily replacing a 4-arm spider you may already own. Designed to adapt to different disciplines, the Inspider comes in two versions:
Easy installation on Rotor axles, suitable for both road and MTB use.
For optimal performance, it is crucial to match the spider with the correct axle:
This ensures the best power transfer and the right stiffness for each discipline.
To make your selection easier, we offer complete Inspider cranksets built around various Rotor crank arms:
Whether you're looking to improve your race performance, optimize your pedaling technique, or precisely track your training sessions, the Inspider is the ideal choice for demanding cyclists. Order your Inspider power meter now and enjoy fast shipping and personalized technical support to help you choose the perfect setup.
https://www.youtube.com/watch?v=3Y9EY2hBj5k

Discover the Inpower range, the ideal power meter crankset for cyclists looking to track their progress at an affordable price. Available in a sleek gloss finish (Inpower V3) and offered in several versions, Inpower includes aero options (54/42, 55/42, 56/44, and 58/44), classic versions (50/34, 52/36, 53/39), as well as micro compact options (46/30 and 48/32) for maximum versatility.
At the heart of Inpower is its 30 mm spindle, ensuring optimal stiffness for efficient power transfer. With Rotor bottom brackets sold separately, it is compatible with all frame types, including BB30, PF30, BSA, and T47 systems. Its direct mount system makes installation and chainring changes quick and easy, simplifying your road bike setup.
Inpower integrates a power meter directly into the spindle, providing precise left-leg power measurement. Powered by a single AA battery with a 300-hour battery life, it ensures long training sessions without interruption. Available in crank lengths of 165 mm, 170 mm, 172.5 mm, and 175 mm, Inpower adapts to every rider for optimal performance.
Compatible with the Rotor app, Inpower easily connects to a GPS or smartphone via ANT+™ and Bluetooth® Smart. This allows you to track your power and cadence data in real time and analyze your performance curves. It’s the perfect crankset for road cyclists and time trialists (TT) looking to explore power measurement without breaking the bank.
With a starting price below 500€ (without chainrings), Inpower offers a complete and accessible solution for improving your performance. If Inpower were to be compared to a reference model, it would be positioned within the Vegast range, known for its excellent value for money. Enjoy a robust and lightweight crankset, crafted from high-quality aluminum, to achieve your cycling goals.

Discover the 2INpower SL, the ideal choice for athletes seeking maximum precision in power measurement. This latest generation power meter, with its dual-sided power measurement, gives you detailed insights into each pedal stroke, helping you optimize your performance.
Dual power measurement: Separate analysis of power from each leg through 4 strain gauge pairs, offering exceptional data accuracy.
Crank arms: Made of CNC-machined aluminum, offering optimal balance between weight and rigidity.
30 mm Axle: Compatible with Rotor bottom brackets in steel and ceramic, ensuring direct and reliable power transmission.
Internal rechargeable battery: Long-lasting and easy to recharge, for continuous tracking of your training.
Different versions to suit your practice:
Chainring Options:
The 2INpower Classic is still available in the 175 mm version, making it an affordable option for those seeking a reliable power meter without the lightweight benefits of the SL model.
This version is perfect for cyclists looking for a proven solution that offers dependable performance.
Note: The 2INpower Classic is a final series product, only available in 175 mm crank length.
Find all the accessories for 2INpower and 2INpower SL, including compatible bottom brackets, installation tools, and chainring options to configure your crankset to your specific needs.