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  • Pioneer Dura-Ace R9100 Bluetooth Power Meter Crankset
  • Pioneer Dura-Ace R9100 Bluetooth Power Meter Crankset Detail
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PioneerDura-Ace R9100 Bluetooth Power Meter Crankset
$1,299.99

Item # PNR000N

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  • Black, 165, 50/34 ($1,299.99)
  • Black, 165, 52/36 ($1,299.99)
  • Black, 165, 53/39 ($1,299.99)
  • Black, 170, 50/34 ($1,299.99)
  • Black, 170, 52/36 ($1,299.99)
  • Black, 170, 53/39 ($1,299.99)
  • Black, 172.5, 50/34 ($1,299.99)
  • Black, 172.5, 52/36 ($1,299.99)
  • Black, 172.5, 53/39 ($1,299.99)
  • Black, 175, 50/34 ($1,299.99)
  • Black, 175, 52/36 ($1,299.99)
  • Black, 175, 53/39 ($1,299.99)
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Item # PNR000N
Description

Dura-Ace R9100 Bluetooth Power Meter Crankset

Already proven in the pro peloton when paired with Shimano's flagship Dura-Ace drivetrain, the Pioneer Dura-Ace R9100 Bluetooth Power Meter Crankset adds data collection to your training, helps you analyze every ride, and doesn't compromise the drivetrain for those of us who appreciate a build where every component is the same make and model. Its sleek design integrates cleanly onto the crankset and features dual-leg strain gauges for independent pedal data and other detailed metrics. Newly updated, it transmits that data to any Bluetooth LE or ANT+ cycling computer, and pairing it with one of Pioneer's own cycling computers opens up an even wider world of torque vector analysis for those of us who want to dig into the real nitty gritty minutiae in search of marginal gains and a few extra watts.

The system measures pedaling force, direction, and overall efficiency via dual strain gauges bonded to the crank arms. Each sensor unit captures 12 points of rotation at 30-degree intervals by measuring minute changes in the shape of the crank caused when force is applied while pedaling. From this, force is calculated in both the direction of rotation and the radial direction. The combination of these two force components indicates the direction in which the total force is being applied, which is shown using the system's force vectors. Also, a magnet ring that attaches to the bottom bracket measures the position of the crank, allowing precise display of the force vectors at every 30-degree interval throughout the rotation.

The force vectors for one full rotation are then wirelessly transmitted to any Bluetooth LE or ANT+ head unit via the transmitter module bolted in the crankset's spider. The information centers around pedaling efficiency, giving riders the ability to target inefficiencies for improvement in training and racing. When pedaling efficiency is high, most of the rider's power is being used to rotate the pedals. So, the force measured in the direction of rotation at each of the 12 points is combined to give the total power output for that rotation. This system is more immune to the inaccuracies found in other power meters that don't gather information at 12 force vectors.

This data is then stored in long file form that can be accessed and analyzed after the ride. You're able to upload your log data to Pioneer's Cyclo-Sphere website, which lets you analyze left and right side pedaling efficiency, power, and force vectors, among many other types of data displayed in easy-to-understand graphs and numerical displays.

This system is paired with is Shimano's new FC-9100 Dura-Ace crankset, boasting a few subtle yet deliberate changes compared to its FC-9000 predecessor. It retains its proven four-arm design and widens the crankarm to move the chainline out by 0.5mm. This may sound imperceptible, but it's just enough to give the crankset broader compatibility with shorter chainstays and the growing number of road bikes built for disc brakes. Shimano also slightly reshaped the chainrings' gear teeth profile to adapt it to the chainline on disc brake-equipped race bikes. As with the 9000 model, this crankset sees the continuation of Shimano's Hollowtech II construction. Over the past few iterations of Dura-Ace, this manufacturing methodology has played an integral role in attaining weight reduction without sacrificing Dura-Ace's superior stiffness.

  • A crank-based power meter with massive data capability
  • Compatible with ANT+ and Bluetooth LE cycling computers
  • Uploads data via Wi-Fi to Pioneer CycloSphere software
  • Provides torque vector data when paired with Pioneer computers
  • Small pods are protected from the elements with IP66 and IP68 resistance
  • Allows you to use genuine Dura-Ace cranks and rings matching the rest of your group
Tech SpecsWeight
Tech Specs
Arm Material
Aluminum
Arm Length
165, 170, 172.5, 175mm
Chainring Sizes
50 - 34t, 52 - 36t, 53 - 39t
Bolt Circle Diameter
110mm asym
Bolts
4
Rings
2
Spindle
24mm
Q Factor
146mm
Compatible Components
Shimano 11-speed road, ANT+, Bluetooth LE devices
Recommended Use
cycling
Manufacturer Warranty
2 years
Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

Grams

Oz

Black, 165, 50/34
686g
24.20oz
Black, 165, 52/36
712g
25.12oz
Black, 165, 53/39
n/a
n/a
Black, 170, 50/34
688g
24.27oz
Black, 170, 52/36
699g
24.66oz
Black, 170, 53/39
709g
25.01oz
Black, 172.5, 50/34
690g
24.34oz
Black, 172.5, 52/36
715g
25.22oz
Black, 172.5, 53/39
722g
25.47oz
Black, 175, 50/34
693g
24.44oz
Black, 175, 52/36
704g
24.83oz
Black, 175, 53/39
709g
25.01oz

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

687g

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  • Familiarity: I've put it through the wringer

Just build up a new bike with the Pioneer power meter, I've had it on three bikes now. I keep going back for all the reasons. It's accurate, it's equal or better than anything out there, always consistent and reliable. I've put them through rain, heat, wind, sand, never had an issue. The data from the dual side is more than you usually need, which isn't a bad thing. highly recommended, about to add one to my tri bike.

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