Rotor 2INPower MTB Crank Arms for Direct Mount Chainrings
-
RA price match promise
-
Pay later with
,
and
This item is "Final Sale" and cannot be returned or exchanged
This item is "Final Sale" and cannot be returned or exchanged
This item is "Final Sale" and cannot be returned or exchanged. Once the order is processed, labeled, or shipped, the order cannot be canceled.
Every item goes through quality control prior to shipping. If there are any imperfections or issues, you will be notified prior to the order being processed.
Items on "Final Sale" are for online only. These items are not at our physical stores for purchase.
Pickup available at RA Cycles - Brooklyn
Usually ready in 24 hours
Questions about this product?
Questions about this product?
Rotor 2INPower MTB Crank Arms for Direct Mount Chainrings
Rotor 2INPower MTB Crank Arms for Direct Mount Chainrings Info
The Rotor 2INPower MTB Crank Arms for Direct Mount Chainrings put dual-sided power measurement inside the crank itself — electronics housed within the thru-axle and right arm, keeping the unit clean, protected, and out of the way of trail debris. That internal design makes the IPX7 waterproof rating achievable without external pods or exposed hardware, and it opens up genuine flexibility in chainring selection for mountain riding.
Compatibility is limited to Rotor's own one-piece direct mount rings — designed for the Hawk and Raptor platforms — which go as small as 26 teeth. If you're running Rotor's oval chainrings, the precise spline interface lets you dial in the exact clocking position to align the ring's high and low points with your pedal stroke. Rotor's Torque 360 and OCA analysis software handles that optimization across smartphones, tablets, and computers. The 30mm spindle works with BB30, PF30, BB89, BB92, and English-threaded bottom brackets, and the crank is Boost-compatible — 169.5mm Q-factor and 52mm chainline. Chainring is sold separately. The crank ships without a bottom bracket; you'll need to source the appropriate bracket, bearings, or spacers for your frame.
Rotor 2INPower MTB Crank Arms Specs at a Glance
- Claimed accuracy: ±1–1.5%
- Transmission: simultaneous ANT+ and Bluetooth Smart (BLE)
- Battery: axle-mounted lithium-ion, ~250-hour runtime; magnetic USB charge cable included
- Spindle: 30mm — compatible with BB30, PF30, BB89, BB92, English threaded
- Crank lengths: 165mm, 170mm, 175mm — Boost spacing, 169.5mm Q-factor
