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INPEAK

INPEAK POWERCRANK-E Shimano 105 R7100 Left Crank Arm with Power Meter

The INPEAK POWERCRANK-E 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* : 349,00 €

Regular price 319,90 €
Regular price Sale price 319,90 €
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Description

The INPEAK POWERCRANK-E 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. Designed for cyclists who want to measure their training objectively without replacing the entire chainset, it fits like a standard crank arm and turns your road bike into a true measurement tool.

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

Unlike the standard battery-powered model, the POWERCRANK-E has a rechargeable Li-Po battery that charges via the supplied magnetic USB cable and provides up to 90 hours of use. ANT+ and Bluetooth Low Energy connectivity ensure compatibility with most bike computers, watches and apps, including Zwift, while the free INPEAK Manager app lets you update the firmware and adjust the scale factor.

Designed and manufactured in Poland, each INPEAK power meter is individually calibrated before dispatch to ensure reliability proven by hundreds of riders. It offers recognised value for money for anyone getting started with power measurement without breaking the bank.

Ref: 16133060002172

Key features

Designed and manufactured in Poland, individually calibrated before dispatch

Rechargeable Li-Po battery, charged via the supplied magnetic USB cable

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

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
• Type: rechargeable Li-Po
• Capacity: 110 mAh
• Battery life in use: up to 90 hours
• Standby battery life: up to 6 months
• Battery life in transport mode (ShipMode): up to 24 months
• Full charging time (0-100%): 2 hours
• Charging temperature: +5°C to +40°C
• Lifespan: less than 20% capacity loss after 300 full cycles (approximately 6 years of use)
• Required charger: 5VDC, 1000mA (not supplied)
• 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
• Magnetic USB charging cable
• Quick instruction manual
• Sticker set
• Device data card┌

Price information

*Recommended retail price from supplier in July 2026