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INPEAK

INPEAK POWERCRANK Shimano 105 R7100 Left Crank Arm with Power Meter

The INPEAK POWERCRANK Shimano 105 R7100 Left Crank Arm with Power Meter integrates a single-sided power meter directly into an original Shimano 105 FC-R7100... Read more

Recommended price* : 339,00 €

299,90 €
299,90 €
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Description

The INPEAK POWERCRANK Shimano 105 R7100 Left Crank Arm with Power Meter integrates a single-sided power meter directly into an original Shimano 105 FC-R7100 left crank arm. It is the most popular and affordable model in the INPEAK range, designed to make it easy to start measuring power without a complicated installation.

A gyroscope and accelerometer (IMU) work with strain gauges to deliver measurement accuracy of ± 2% over a range of 20 to 2000 W, along with cadence, torque effectiveness and pedal smoothness. Active temperature compensation (ATC) ensures reliable data from -5°C to +50°C, while the IP67 waterproof housing withstands rain, mud and everyday knocks.

The POWERCRANK runs on a single CR2032 battery, offering an exceptional battery life of up to 200 hours of use before replacement. ANT+ and Bluetooth Low Energy connectivity ensure compatibility with most bike computers, watches and apps such as Zwift, while the free INPEAK Manager app lets you update the firmware and adjust the scale factor.

Designed and manufactured in Poland, each power meter is individually calibrated before dispatch. With one of the lowest prices on the market for an integrated power meter, its durability has been confirmed by hundreds of amateur and professional riders.

Ref: 16133060034940

Key features

Designed and manufactured in Poland, individually calibrated before dispatch

Up to 200 hours of use from the CR2032 battery

Active temperature compensation (ATC) from -5°C to +50°C

IP67 waterproof, impact-resistant housing

Ultra-lightweight power meter, just 10 g heavier than the original crank arm

ANT+ and Bluetooth Low Energy connectivity, compatible with Zwift

Firmware updates and scale factor adjustment via the INPEAK Manager app

One of the lowest prices on the market for an integrated power meter

Technical information

┘POWER METER
• Type: single-sided power meter (left side)
• Measurement accuracy: ± 2%
• Power measurement range: 20 to 2000 W
• Cadence range: 20 to 200 rpm
• Weight: original Shimano 105 crank arm weight + 10 g
• Housing waterproof rating: IP67
• Manual zero-offset calibration: yes
• Active temperature compensation (ATC): yes, -5°C to +50°C
• Gyroscope + accelerometer (IMU): yes
• Torque effectiveness and pedal smoothness: yes
• Cycling dynamics and left/right balance: available only on the TWiN2 version
• Operating temperature: -5°C to +50°C
• Storage temperature: -20°C to +50°C┌

┘BATTERY
• Battery type: lithium CR2032 3V
• Capacity: 200 mAh
• Battery life in use: up to 200 hours
• Standby battery life: up to 6 months
• Battery life in transport mode (ShipMode): up to 24 months
• Low-battery notification: yes┌

┘SOFTWARE & CONNECTIVITY
• Dedicated app: INPEAK Manager (iOS/Android)
• Remote firmware updates: yes
• Scale factor adjustment: yes
• Zwift-compatible mode: yes
• ANT+ compatibility: yes
• Bluetooth Low Energy compatibility: yes
• Automatic sleep and wake: yes┌

┘COMPATIBILITY
• Shimano 105 FC-R7100 crank arm, 2x12-speed
• Available crank arm lengths: 160 / 165 / 170 / 172.5 / 175 mm
• Fits a Hollowtech II bottom bracket
• Compatible with original Shimano 105 chainrings (50-34T / 52-36T)
• Replaces only the left crank arm: the original right crank arm and chainrings are retained┌

┘PACKAGE CONTENTS
• Shimano 105 FC-R7100 left crank arm with integrated power meter
• Quick instruction manual
• Sticker set
• Spare O-ring
• Device data card
• 1x CR2032 battery┌
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Price information

*Recommended retail price from supplier in July 2026