This Shimano Dura Ace R9100-Power Meter chainset is no longer available although you may find similar or newer versions below:
Accurate Readings in all Conditions
Shimano have extensively tested this new power meter system to ensure its accuracy and reliability in all weather conditions. The chainset is equipped with dual sided and internally hard-wired crank arm strain gauges, which provide a ±2% power measurement accuracy regardless of your pedalling position.
Easy to Maintain
The power meter is powered with a simple rechargeable battery for easy maintenance and can be updated wirelessly. As it is mounted to the crank arms 4-arm spider, you can change the chainrings without having to worry about affecting the power measurement.
Lighter and stiffer
Although the crank arms and spider arms are noticeably bigger to increase stiffness, the overall weight has dropped by 7g over the previous edition of Dura-Ace. The chainset has been adapted to work with disc brake road bikes that generally have 135mm rear hub spacing and shorter chainstays without the need to increase Q-factor thanks to its wider chainring spacing. This Compact version features a 50/34T chainring profile to offer an excellent rider tuned gear combination for varied conditions from flats to high mountains.
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.