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ROTOR 2INpower SL Road Power Meter
August 20, 2025Price range: $900.00 through $1,299.00
Lighter and more affordable than ever with dual-leg power +/- 1.5% accuracy
FOR CHAINRINGS, PLEASE SEE TEXT SECTION BELOW
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ROTOR 2INpower SL Road Power Meter
The all-new ROTOR 2INpower SL Road Power Meter is lighter and more affordable than ever! Weighing just 530 grams (170 mm) the 2INpower Super Light Road is 15% lighter than the previous model and is now the lightest dual-sided power meter on the market. Using ROTOR’s Trinity Drilling System along with aeronautical grade 7075-T6 aluminum, the crankset is not only lightweight, but also ultra-stiff. This means better power transfer and increased efficiency.
The 2INpower also features dual-leg power measurement with two sets of power sensors. This allows you to see total power as well as left vs. right leg power balance. In addition, the power meter is accurate to +/- 1.5% making it one of the most accurate power meters available. It also features automatic calibrations (no rider offset required).
The ROTOR power meter comes with a user-friendly app that provides personalized data and detailed graphs for in-depth analysis and training along with dual ANT+ and Bluetooth connectivity. The built-in rechargeable battery charges in just 3 hours and provides up to 250 hours of life.
~Chainrings~
ROTOR offers several different chainrings that fit this power meter…too many for us to list in the menus above! So on the Checkout Page, just tell us what chainrings to include in your order. No need to add the chainrings you want to your cart – the cost is included with the power meter here! Please view all available ROTOR power meter chainrings.
Key Product Details
Compatibility:
This power meter fits 30 MM road bottom brackets and is compatible with a wide selection of ROTOR chainrings. See Compatibility tab for more information.
Power Measurement:
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.
Key Features:
Dual-leg power measurement, lightweight and stiff, works with a wide selection of ROTOR chainrings, can measure left vs. right leg power, accurate to within +/- 1.5%, 250 hours of battery life, rechargeable battery, ANT+ and Bluetooth compatible, 2-year warranty. See Specs tab for more information.
Advice From Our Staff:
This 2INpower SL is pricey and we understand it’s not in everyone’s budget, but it’s a wonderful power meter. It measures dual-leg power, is highly accurate and is light and stiff. It can also be used with a side selection of ROTOR chainrings from 1x to 2x, round to oval, standard to aero and more.
Options For This Power Meter
The ROTOR 2INpower SL Road Power Meter is available in the following configurations:
- Crank arm lengths: 155 mm | 165 mm | 170 mm | 172.5 mm | 175 mm
Other Versions to Consider
INpower Version: While the 2INpower you are viewing on this page measures power from both legs, we also have the more affordable ROTOR INpower V3 Road Power Meter which is a complete crankset but measures left leg power only.
Compatibility
Chainrings: The ROTOR 2INpower SL is compatible with a wide selection of ROTOR 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.
ROTOR 2INpower SL Road Specs
| Name | ROTOR 2INpower SL 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 | 530 grams (170 mm) |
| 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 |
In the Box
- ROTOR 2INpower SL Road Power Meter
- Chainrings (if purchased)
- ROTOR 110x4 Gloss Black Spider (included with chainring purchase only)
- USB cable for charging
- Users manual
Tools Needed for Installation
You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.
- 10 mm Allen key
- ROTOR DM lockring tool (supplied)
Q&A
Have a question about this? Ask the staff.
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Patrick Medau (verified owner) –
I am so happy I chose the Rotor 2INpower Sl Road Power meter and Crankset. I have installed it on my new Road build-up and it fully completes the bike. And thank you! to Power Meter City for their incredible cusstomer service.
Power Meter City –
Hi Patrick! We’re thrilled to hear you’re loving the Rotor 2INpower setup and that it completes your new build! Thank you for the kind words about our customer service — it means a lot. Enjoy every ride!