

The ROTOR 2INpower DM Road Power Meter makes several improvements over the previous generation ROTOR (the INpower). Perhaps the biggest change is the 2INpower features independent left/right power measurement. ROTOR has added two additional sets of strain gauges to the right crank arm that measure right leg power. Four strain gauges located in the crank axle measure the left leg’s power output (as is the case with the previous INpower version).
In addition, the 2INpower DM features ROTOR’s Direct Mount Chainrings. The Direct Mount rings are machined from a solid block of 7075 aluminum which makes them lighter and stronger than the standard 2x chainring configuration. The ROTOR 2INpower DM has Bluetooth SMART functionality, a built-in rechargeable battery and features +/- 1.0% accuracy.
This power meter fits 30 MM road bottom brackets and is compatible with ROTOR Direct Mount Chainrings.
This ROTOR power meter has two power sensors (bottom bracket and right crank arm) and measures power from both legs. It is also able to measure your left vs. right leg power.
Dual-leg power measurement, works with ROTOR direct mount chainrings (light and stiff), can measure left vs. right leg power, accurate to within +/- 1.0%, 250 hours of battery life, rechargeable battery, ANT+ and Bluetooth compatible, 2-year warranty.
This 2INpower is pricey and we understand it’s not in everyone’s budget. However, here’s why we like it: it measures power from both legs, provides left vs. right leg power, the aluminum crank arms are light and stiff and the ROTOR direct mount chainrings further increase stiffness. In addition, this power meter makes it easy to run oval rings if that’s your thing.
Please note – the ROTOR 2INpower DM is only compatible with ROTOR Direct Mount Chainrings. Sold separately.
Chainrings: The ROTOR 2INpower DM is compatible with ROTOR Direct Mount Chainrings. They are designed to work with 9-, 10-, 11-, 12-, and 13-speed groupsets.
Bottom Bracket: This power meter fits 30 MM bottom brackets. If you currently have a 30 MM crankset on your bike, you should be able to re-use your existing bottom bracket. However, if you are changing spindle sizes, you will need to replace your bottom bracket.
| Name | ROTOR 2INpower DM Power Meter |
| Bike Type | Road |
| Location of Power Measurement | Axle / bottom bracket (L) and crank arm (R) |
| Left or Both Legs Measured | Both |
| Independent Left/Right Measurement | Yes |
| Installation | More involved (60 min. estimated) |
| Crank Arm Material | Aluminum |
| Communication Protocol | ANT+ and Bluetooth SMART |
| Claimed Accuracy | +/- 1.5% |
| Active Temperature Compensation | No |
| Weight | 775 grams (with chainrings) |
| Battery Type | Rechargeable Li-ion |
| Battery Life | 250 hours |
| Method of Cadence Measurement | Accelerometer |
| BCD | Direct Mount |
| Spindle Size | 30 mm |
| Q Factor | 147.5 mm |
| Warranty | 2 years |
Why Buy from Power Meter City
1. We ship fast! All orders ship on the same day your order is placed!
2. Free shipping on all orders in the U.S.
3. We are an authorized ROTOR dealer and this product comes with a full warranty.
4. Expert advice and customer service in case you need any help.
About our Company
At Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.
We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.