4iiii PRECISION 3+ PRO Dual-Side Powermeter Crankset SHIMANO Ultegra FC-R8100, 36-52 T.

Compressed into a small and lightweight package, the PRECISION 3+ PRO powermetre combines 4iiii's precise measurement technology with dual-sided power tracking. By measuring both legs separately, it provides particularly comprehensive data for precise, power-based training management.

In the Ride Ready version, you receive a brand-new SHIMANO ULTEGRA FC-R8100 crankset with 52-36 T and power measurement technology installed and ready for use on both crank arms. For installation, you simply swap out your existing crankset. The installation corresponds to the SHIMANO standard process for HOLLOWTECH II cranksets and can thus be completed in a few simple steps. Afterwards, simply connect the power metre to your favourite training device and you're ready to go!

The dual-sided measurement records the power of each leg separately, thereby enabling the evaluation of the left-right balance. Further metrics such as pedal smoothness and torque effectiveness provide additional insights into your pedal stroke. With +/- 1% accuracy, a battery life of up to 550 hours, automatic terrain detection and support for the Apple Find My feature, the 4iiii PRECISION 3+ PRO power metre leaves almost nothing to be desired.


Highlights:

• Power measurement on both sides:
The PRECISION 3+ PRO measures the power of both legs separately. As a result, you receive information on the left-right balance in addition to the total power and can identify potential differences between both sides.

• Advanced training metrics:
Additional metrics such as pedal smoothness and torque effectiveness allow for a more precise analysis of the consistency and effectiveness of your pedal stroke.

• Apple Find My support:
The Apple Find My technology is integrated directly in the PRECISION 3+ PRO power metre. By using the Apple network with over 1.5 billion users worldwide, you can keep an eye on your bike's location with your Apple devices. A practical safety feature.

• Battery life:
With up to 550 hours of battery life, you won't have to worry about changing your battery for a very long time.

• Accuracy in 3D:
Nobody has the perfectly round pedal stroke! 4iiii uses three strain gauges on the PRECISION 3+ PRO power metre to measure all forces in your pedal stroke.

• Automatic terrain selector:
The PRECISION 3+ PRO power metre automatically detects the terrain you’re riding on for a better quality of the cadence and power data.

• Ultra Low Profile:
Thanks to the low-profile design of just approx. 5.5 mm, the measuring units on the inside of the crank arms require very little space and are compatible with many bicycle frames.

• Weight:
The dual-sided measuring system weighs approx. 29 g and is therefore barely noticeable on the crank.

• Waterproof rating:
With an IPX7 rating, the PRECISION 3+ PRO can handle the toughest conditions.

• Indoor training:
If the weather doesn't play along, you can connect your 4iiii power metre via ANT+ or Bluetooth Smart (BLE) with all common indoor training apps such as Zwift, TrainerRoad, Wahoo SYSTM or Rouvy and use it on the roller trainer.

Features:
• Power measurement (dual-sensing)
• Left-right balance
• Cadence measurement
• Apple Find My support
• Automatic terrain selector
• Cycling Metrics (e.g. Pedal Smoothness and Torque Effectiveness)
• Indoor training (connection to common training apps)

Technical details power metre:
• Interfaces: ANT+ and Bluetooth Smart (BLE)
• Power measurement: dual-sensing
• Left-right balance: yes
• Cadence measurement: yes
• Calibration (zero offset): yes
• Cycling Metrics: Pedal Smoothness und Torque Effectiveness
• Measuring tolerance: +/- 1 %
• Battery life: up to 550 hours
• Battery type: 2 CR2032 round cell batteries
• Protection category: IPX7
• Watt measuring range: 0 – 4000 W
• Cadence range: 30 – 170 rpm (revolutions per minute)
• Operating temperature: 0 – 50 ºC
• Storage temperature: -40 - 60 ºC
• Stack height (from crank arm): approx. 5.5 mm
• Weight: approx. 29 g

Technical details crankset:
• Intended use: Road bike
• Series: Ultegra
• Model: FC-R8100
• Material crank arms: aluminium (hollow)
• Material chainring: aluminium/composite (large), aluminium (small)
• Gears: 2 x 12-speed
• Chainring combination: 52-36 T
• Axle: Hollowtech II
• For a shell width of: 68 / 70 mm
• Bolt circle: 110 mm (asymmetric)
• Chainline: 44.5 mm
• Q factor: 148 mm
• Weight: approx. 711 g (52-36 T, 170 mm, without bottom bracket)

Available with crank arm length: 
• 165 mm
• 170 mm
• 172.5 mm
Please indicate your choice.

In the box:
• 1 4iiii PRECISION 3+ PRO Dual Side Powermeter crankset SHIMANO Ultegra FC-R8100, 52-36 T
• 2 CR2032 round cell batteries (pre-installed)

Note:
The 4iiii PRECISION 3+ PRO Dual-Side Powermeter Crankset is supplied without a bottom bracket. SHIMANO recommends the following bottom brackets depending on the frame standard:

• BSA/Italian: SM-BBR60 (prod. code: 1955804)
• Pressfit SM-BB72 (prod. code: 1955813)

Manufacturer: 4iiii Innovations INC., 141 2nd Ave E Cochrane, AB, T4C 1B9, Canada, www.4iiii.com
Responsible person: 2moso B.V., Zwarte Zee 2, NL-3144 DE Maassluis, Netherlands, www.2moso.com