{"product_id":"fc-r8100-ultegra-12-speed-double-chainset","title":"FC-R8100 Ultegra 12-speed double chainset","description":"\u003cp\u003e\u003cstrong\u003eShimano Ultegra HollowTech II 12-Speed Chainset\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003eShimano Ultegra HollowTech II 12-speed chainset\u003c\/strong\u003e delivers a perfect mix of light weight, stiffness and smooth shift performance for enthusiasts and racers alike. The \u003cstrong\u003eHollowGlide hollow chainring\u003c\/strong\u003e boosts rigidity and sharp shifting, even under load, while tooth profiles are optimised for 12-speed HG chains to improve contact, efficiency and power transfer.\u003c\/p\u003e\u003cp\u003eCold-forged \u003cstrong\u003eHollowTech II crank arms\u003c\/strong\u003e maximise stiffness with reduced weight, and \u003cstrong\u003ewide gear pitch spacing\u003c\/strong\u003e increases clearance for frames with 135\/142 mm O.L.D. A range of chainring sizes and crank lengths lets you tailor the build to your riding. Designed to pair with a \u003cstrong\u003eHollowTech II bottom bracket\u003c\/strong\u003e (sold separately), the integrated system uses wider bearings and a larger axle for enhanced stiffness, smooth rolling and long-lasting durability.\u003c\/p\u003e","brand":"Leadout Performance","offers":[{"title":"Default Title","offer_id":56782303494488,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/www.leadoutperformance.co.uk\/products\/fc-r8100-ultegra-12-speed-double-chainset","provider":"Leadout Performance","version":"1.0","type":"link"}