{"product_id":"freewheel-fcr8100a04","title":"Shimano Ultegra FC-R8100 Ultegra 12-speed double chainset","description":"\u003cp\u003eShimano Ultegra FC-R8100 Ultegra 12-speed double chainset.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe HollowTech II 12-speed Ultegra chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders\u003c\/li\u003e\n\u003cli\u003eHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load\u003c\/li\u003e\n\u003cli\u003eThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer\u003c\/li\u003e\n\u003cli\u003eIndustry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight\u003c\/li\u003e\n\u003cli\u003eWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 \/ 142 mm\u003c\/li\u003e\n\u003cli\u003eA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines\u003c\/li\u003e\n\u003cli\u003eHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency\u003c\/li\u003e\n\u003cli\u003eHollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Freewheel \/ Madison","offers":[{"title":"Grey \/ 50 \/ 34 teeth \/ 165 mm","offer_id":55543828283734,"sku":"FCR8100A04","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 52 \/ 36 teeth \/ 165 mm","offer_id":55543828316502,"sku":"FCR8100A26","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 50 \/ 34 teeth \/ 170 mm","offer_id":55543828349270,"sku":"FCR8100C04","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 52 \/ 36 teeth \/ 170 mm","offer_id":55543828382038,"sku":"FCR8100C26","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 50 \/ 34 teeth \/ 172.5 mm","offer_id":55543828414806,"sku":"FCR8100D04","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 52 \/ 36 teeth \/ 172.5 mm","offer_id":55543828447574,"sku":"FCR8100D26","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 50 \/ 34 teeth \/ 175 mm","offer_id":55543828480342,"sku":"FCR8100E04","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 52 \/ 36 teeth \/ 175 mm","offer_id":55543828513110,"sku":"FCR8100E26","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 50 \/ 34 teeth \/ 160 mm","offer_id":55543828545878,"sku":"FCR8100M04","price":299.99,"currency_code":"GBP","in_stock":true},{"title":"Grey \/ 52 \/ 36 teeth \/ 160 mm","offer_id":55543828578646,"sku":"FCR8100M26","price":299.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/1425\/4166\/files\/ftp_f_freewheel_imagesmadisonfwaccessoriesfcr8100_1.jpg?v=1790787976","url":"https:\/\/substancecycles.co.uk\/products\/freewheel-fcr8100a04","provider":"Substance Cycles","version":"1.0","type":"link"}