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Item # SEM000C

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  • Black, 170mm-50/34 ($2,970.00)
  • Black, 170mm-53/39 ($2,970.00)
  • Black, 172.5mm-50/34 ($2,970.00)
  • Black, 172.5mm-53/39 ($2,970.00)
  • Black, 175mm-50/34 ($2,970.00)
  • Black, 175mm-53/39 ($2,970.00)
  • Black, 170mm-52/36 ($2,970.00)
  • Black, 172.5mm-52/36 ($2,970.00)
  • Black, 175mm-52/36 ($2,970.00)
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Item # SEM000C

Train endless hours

The SRM Dura-Ace 9000 Wireless Powermeter is the latest power crankset package to come from the marriage of SRM and Shimano. Eagerly anticipated, especially by Shimano-sponsored riders who mated older 7800-series crankarms with their new Dura-Ace 11-speed groupos last season, the Dura-Ace 9000 is nothing short of outstanding. 

The SRM Dura-Ace 9000 powermeter relies on the precise power measurements that professional cyclists have depended on from SRM. It is packaged in an updated design. In order to accommodate the FC-9000 crankset, the SRM unit itself was built with a larger diameter over the previous 7900 version. Shimano and SRM's engineers found that this new platform more accurately measures the offset forces and inconsistent torque patterns for your left versus right leg. Additionally, this design allowed them to insert two batteries into it, which, according to SRM, provides roughly 3,000 hours of use before needing to be recharged. This now doubles the battery life compared to the 7900 iteration. Besides these updates to the SRM unit, it still relies on the tried-and-proven eight strain gauges for measuring data. The eight strain gauges for the powermeter are a system of sensors that detect any resistance and vary their output when experiencing applied force. The next step is for the strain gauges to convert this data into electrical resistance so that it's able to be measured. The refinements to the system provide stellar results. The 9000 Powermeter expresses an accuracy of +/- 2.0% between 30 and 255 rpm, with a wattage range between 0 and 4096 watts.

In addition to measuring power output, you're now able to run either compact or standard rings on one spider with the FC-9000 crankset. In fact, it's also lighter, just as stiff, and sleeker than 7900. On the surface, the FC-9000 is a complete departure from the traditional aesthetics of Dura-Ace. Gone are the days of the five-arm spider, and the necessity for a separate compact crankset has also fallen by the wayside. Instead, 9000 features a shift to a new four-arm spider design. This occurred for many reasons, but most notably, it's because the four-arm spider matches rigidity with 7900 while shaving around 52 grams. However, 9000 has more than meets the eye. Like 7900, you'll find 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.

It's this balance of Shimano practicing tried-and-true forging methods, while still treading into unknown waters, that makes Dura-Ace more of a continuation than an innovation. We mean this in the best possible way. Shimano has learned what works, and over the years, has continually added to, and improved, the ideology of Dura-Ace. Hollowtech II and Hollowglide are prime examples of this. Strategic placement of hollow aluminum throughout the crankset and chainrings allows more structural material to be used, and when coupled with Shimano's integrated bottom bracket, creates an unrivaled weight-to-stiffness ratio.

The SRM Shimano Dura-Ace 9000 Wireless Powermeter is available in 170mm, 172.5mm, and 175mm crankarm lengths in both standard (53/39t) and compact (50/34t) configurations. The powermeter operates wirelessly with ANT+ Sport, and is being offered as a standalone item. However, it is compatible with PowerControl 7, PowerControl VI, or any other ANT+ compatible device.

  • ANT+ compatible
  • Crankset is compatible with both standard and compact rings.

Tech Specs

Claimed Weight:
[170mm, 50/34t] 773 g
Spindle:
aluminum
Bottom Bracket:
integrated Shimano Hollowtech II
Arm Material:
aluminum
Recommended Use:
road cycling
Rings:
2
BB Threading:
English
Manufacturer Warranty:
3 years
BB Type:
Shimano Dura-Ace SM-BB9000
Chainring Sizes:
53 / 39 t, 50 / 34 t
Compatible Components:
Shimano Dura-Ace 9000
Arm Length:
170 mm, 172.5 mm, 175 mm

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Unanswered Question

Are the SRM power meters eligible for your 20% off one item promotion that you guys offer?

Avg. ride time: 5h 56m per week
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An Unboxing of the SRM 9000.