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Shimano’s lightweight evolution of the FC-R9100 is now available as a 4iiii PRECISION power meter! Used by the World Tour teams Quick-Step Floors and Bora-hansgrohe, the 4iiii PRECISION Power Meter for Shimano DURA-ACE 9100 is the lightest, most affordable direct force power meter available. The added weight of the 4iiii PRECISION is only 9 grams. Even better yet, it is accurate to within +/- 1%.

The 4iiii PRECISION is a left-only crank arm-based power meter and replaces your current left side crank arm. The 4iiii takes the power that is generated by your left leg and doubles it in order to determine your total power output. All PRECISION models run off a CR2032 battery, feature approximately 100 hours of battery life and support both ANT+ and Bluetooth SMART wireless protocols.

4iiii PRECISION Power Meter For Shimano DURA-ACE 9100 Options

Crank arm lengths: 165 mm | 170 mm | 172.5 mm | 175 mm

Compatibility

The 4iiii PRECISION Power Meter For Shimano DURA-ACE 9100 is compatible with the following Shimano cranks:

105

  • 5800
  • 5700

Ultegra 

  • 6800
  • 6700
  • 6600

DURA-ACE

  • 7900
  • 9000
  • 9100

In the Box

  • 4iiii PRECISION Power Meter For Shimano DURA-ACE 9100
  • 2 2032 coin cell batteries
  • Quick Start guide

Specs

  • Weight: 9 grams (plus weight of crank)
  • Crank Arm Lengths: 165,170,172.5,175 mm
  • Battery Type: 2032 coin cell
  • Battery Life: 100 hours
  • Communication Protocol: Bluetooth SMART and ANT+
  • Claimed Accuracy: +/- 1.0%
  • Cadence: Accelerometer

Delivery Information

Hargroves Cycles offer Free Delivery for all orders over £9 with in Mainland UK (orders below £9 will be charged £1.99)

Bikes and Bulky items are sent via TNT Courier and smaller items are sent via Royal Mail 2nd Class Post.

Items over £50 are sent with Royal Mail 1st Class track able service which is emailed to the customer on the day of dispatch.
For full delivery details please see our Delivery Page

International Delivery

Hargroves Cycles delivery all across Europe. Goods are shipped from the UK and are subject to import duties where applicable

For further delivery, pricing and restriction information please view our International Shipping Page

Returns Information

We will happily exchange or refund any item purchased at Hargroves Cycles within 365 days, except gift vouchers and personalized products, except where faulty.

Returned goods must be unused and supplied with their original packaging, unless faulty.

For full details on our Returns procedure please visit out Returns Section.

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At 4iiii Innovations we develop technologies that improve sports performance and make the athlete’s world safer. Our products increase awareness and provide an uninterrupted and real-time flow of data needed to set a personal best or achieve a podium position. Our goal in everything we do is to eliminate distractions, increase focus and produce better results. We are engineers and innovators. We are also athletes designing better ways for other athletes to win.

We’re driven by our ‘Smarter. Faster. Safer.’ mantra to offer products that re-think data delivery. Through innovative technologies we offer simple and immediate display of what you need to know to raise your game. In everything we do, our goal is to become a seamless and essential part of your training and to provide the winning edge when it comes to competing.