INPEAK 105 FC-R7100 Single PowerCrank Power Meter (£324.99)
The INPEAK PowerCrank is a Shimano 105 FC-R7100 crank arm with a power meter built in, from a Polish brand that sells it as a low-price alternative. We have not tested it. This page collects what Tredz lists and the current price.
Available now: INPEAK 105 FC-R7100 Single PowerCrank Power Meter — £324.99 at Tredz, correct at time of writing, 12 October 2026.
What the retailer lists
- Accuracy: ±2%, across a 20–2000 W power range and 20–200 rpm cadence range.
- Connectivity: ANT+ and Bluetooth Low Energy, with a Zwift compatible mode.
- Battery: a coin cell, listed as a CR2032 3V with up to 200 hours of use. The prose on the listing says CR2023, which looks like a typo; the spec table and box contents say CR2032 and include one cell.
- Temperature: automatic temperature compensation from -5°C to +50°C.
- Build: IP67, with a 10g INPEAK device on the crank and manual zero-offset calibration.
- Software: updates and scale-factor changes through the INPEAK Manager app, with a low-battery notification.
- In the box: the crank with integrated power meter, a brief manual, stickers, a spare O-ring, a device data card and the battery.
Cycling dynamics and left/right balance are marked on the listing as features of the TWiN2 version, not this single-sided one.
Where it fits for triathletes
The points below are our reading of the listed specs, not test results.
- Price. INPEAK describes it on the listing as “one of the cheapest solutions on the market”; compare the £324.99 against dual-sided options before deciding that one leg is enough.
- One side only. A single-sided meter reports one leg’s output, so a left/right imbalance will not show up in the numbers.
- Bike swaps. The meter is part of the crank, so it moves with the crank rather than between bikes the way a pedal-based meter can.
Where to buy
Tredz lists the INPEAK 105 FC-R7100 Single PowerCrank at £324.99 at time of writing, and the link below goes to the same product page.
Related guides
See also our best power meters guide, pedal-based vs crank-based power meters and the SRAM Rival AXS power meter crankset review.
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