With several years of development and working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter HollowTech II 11-speed Dura-Ace chainset. Features: Accurately calibrated strain gauges are integrated inside both left and right crank arms, this provides a stable measurement system through rotation from both sides for extremely precise data 2% accuracy of strain gauge measured power Bluetooth and ANT with wireless firmware update and data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 11-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability

"Alright, if you're wondering where everyone in the UK goes to splash their cash, it's a pretty diverse list, but a few names always pop up at the top. For your everyday groceries and a bit of everything else, the big supermarket giants like Tesco, Sainsbury's, and Asda are absolute powerhouses, with Morrisons and Lidl/Aldi hot on their heels, drawing in loads of shoppers with their sheer convenience and competitive Shimano Dura Ace FC-R9100-P Power Meter Chainset - 50/34 - Double - 172.5mm prices. Then you've got the general merchandise and fashion stalwarts like Marks & Spencer and Next, which are just synonymous with British high streets and a decent wardrobe, alongside the ever-popular John Lewis for a more premium, department store vibe. Don't forget the likes of Boots and Superdrug for all your health and beauty essentials, and massive DIY chains like B&Q or Screwfix are absolutely booming for anyone doing up their gaff. Basically, it's a mix of places that offer convenience, value, and quality, whether you're after a pint of milk or a whole new living room! " - Bargainplace UK

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