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4iiii 105 FC-R7100 Precision 3+

The 4iiii 105 FC-R7100 Precision 3+ is a single-sided power meter for Shimano 105 R7100 cranks and other compatible Shimano Hollowtech II road cranks. It measures power on the left crank arm and suits riders who want to add precise yet...

€319.00 * RRP: €359.00 *

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4iiii 105 FC-R7000 Precision 3+

The 4iiii 105 FC-R7000 Precision 3+ is a single-sided power meter for Shimano 105 R7000 cranks and other compatible Shimano Hollowtech II road cranks. It is especially suitable for riders who want to keep using a proven 11-speed road...

€299.00 * RRP: €349.00 *

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4iiii Shimano GRX RX810 Precision 3+

The 4iiii Shimano GRX RX810 Precision 3+ is a single-sided power meter for Shimano GRX cranks and is aimed at gravel and all-road riders who want to ride with watt-based data on long rides, bikepacking trips and structured training...

€359.00 * RRP: €409.00 *

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4iiii Ultegra R8100 Precision 3+

The 4iiii Ultegra R8100 Precision 3+ is a single-sided power meter for Shimano Ultegra R8100 cranks and other compatible Shimano Hollowtech II road cranks. It is designed for ambitious road riders who want clean integration and...

€389.00 * RRP: €459.00 *

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4iiii Shimano XT M8100 Precision 3+

The 4iiii Shimano XT M8100 Precision 3+ is a single-sided power meter for Shimano XT M8100 MTB cranks. It is aimed at riders who want to train with power in cross-country, marathon and trail riding and manage workload more precisely. To...

€389.00 * RRP: €409.00 *

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4iiii Dura-Ace R9200 Precision 3+

The 4iiii Dura-Ace R9200 Precision 3+ is a single-sided power meter for Shimano Dura-Ace R9200 cranks and other compatible Shimano Hollowtech II road cranks. It is aimed at riders who want to combine precise power measurement with very...

From €429.00 * RRP: €519.00 *

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Shimano TL-FC16 Crank Installation Tool

The Shimano TL-FC16 crank installation tool is the original Shimano tool for installing and removing Hollowtech II cranks. It is intended for riders and mechanics who need the correct and simple tool for the preload cap on Shimano...

€2.99 *

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4iiii power meter

4iiii is a manufacturer of power meters and accessories from Canada. In 2015, 4iiii released the PRECISION Left Side power meter. Using patented 3D strain gauge technology, it was able to measure three aspects of pedal stroke. In 2016, 4iiii entered the pro peloton with the launch of the PRECISION PRO Dual Sided power meter. Until 2018, Etixx Quick Step was sponsored to ride with 4iiii power meters. In addition to Etixx Quick Step, Bora Hansgrohe was also sponsored and raced with 4iiii technology from 2017 to 2019. Bora collected 73 victories, including Peter Sagan's legendary performance at Paris-Roubaix and his 2017 world championship win, while riding with a 4iiii power meter.

4iiii Precision 3 power meter

4iiii builds single- and double-sided power meters. The latest generation - the 4iiii Precision 3 power meter - is a single-sided power meter for Shimano cranks (105, Ultegra, Dura Ace, XT & GRX). It measures the power on the left crank arm. The powermeter itself weighs only 9g and has a high accuracy of ±1%. The battery has a record-breaking operating time of 800 hours. The 4iiii Precision 3 power meter also has built-in cadence measurement and active temperature compensation. It is easy to switch between bikes and is compatible with ANT+ and Bluetooth. The 4iiii Precision 3 power meter is permanently attached to the left crank arm. To change the crank arm, a TL-FC16 tool is required in addition to an Allen key.