{"product_id":"shimano-ultegra-r8170-di2-disc-groupset","title":"Shimano Ultegra R8170 Di2 Disc Groupset","description":"\u003cp\u003e\u003cstrong\u003eShimano Ultegra R8170 Di2 Disc Groupset\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eDrawing on technology refined in the flagship Dura-Ace range, Shimano’s Ultegra R8170 Di2 Disc Groupset is better than ever before. It strikes an exceptional balance between performance and value, offering components that are slick, dependable, and only marginally heavier than their Dura-Ace counterparts.\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eShifting is flawless, faster than in previous generations, and operates with near-silent precision. This is thanks to Hyperglide+ tooth profiling, which optimises the interface between chain, chainrings, and cassette for smoother, more responsive shifts, even under load and across the full gear range. The addition of a 12th sprocket further refines gear progression, delivering seamless transitions between ratios.\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eBraking performance is equally impressive. Redesigned flat-mount calipers provide increased clearance between rotor and pad, minimising the rubbing and scraping noises often encountered in wet or gritty conditions. The Servo Wave brake levers have been re-engineered for improved ergonomics and feature a revised lever stroke that brings the pad into contact with the rotor more quickly, resulting in a more progressive and intuitive feel.\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eAesthetically, the groupset is clean and modern. The semi-wireless Di2 system eliminates visible cables between shifters and derailleurs, while the internal battery mounts discreetly within the seatpost or seattube and connects directly to the derailleurs. The charging port is now integrated into the rear derailleur, removing the need for a separate junction box. CR1632 coin cell batteries in the shifters offer 18 to 24 months of use, and the accessible charging point on the rear mech makes powering up the system effortless.\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eWith a wide array of configurations available, including multiple crank lengths and both compact and mid-compact chainring options, this groupset is an outstanding choice for riders seeking to upgrade to a high-performance electronic drivetrain without compromising on reliability or value.\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eWhat’s Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eShimano Ultegra Di2 ST-R8170 hydraulic disc brake\/shift levers (flat-mount, E-Tube compatible)\u003c\/li\u003e\n\u003cli\u003eShimano Ultegra Di2 FC-R8100 12-speed double chainset\u003c\/li\u003e\n\u003cli\u003eShimano CS-R7100 105 12-speed cassette (11-34T)\u003c\/li\u003e\n\u003cli\u003eShimano SLX\/105 CN-M7100 12-speed chain with quick-link (126 links)\u003c\/li\u003e\n\u003cli\u003eShimano Ultegra Di2 RD-R8150 12-speed rear derailleur (E-Tube)\u003c\/li\u003e\n\u003cli\u003eShimano Ultegra Di2 FD-R8150 12-speed front derailleur (braze-on, E-Tube)\u003c\/li\u003e\n\u003cli\u003eShimano RT-CL800 Ice-Tech FREEZA disc rotors (160mm, internal lockring)\u003c\/li\u003e\n\u003cli\u003eDi2 BT-DN300 internal battery (3-port)\u003c\/li\u003e\n\u003cli\u003eEW-EC300 battery charging cable (1700mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003ePlease note: E-Tube wiring and bottom bracket are not included. Should you require assistance with compatibility or installation, do get in touch.\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv class=\"my-2\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e2x12-speed, disc brake, semi-wireless electronic groupset\u003c\/li\u003e\n\u003cli\u003eRear derailleur delivers quick, smooth, and effortless shifts for unmatched drivetrain efficiency\u003c\/li\u003e\n\u003cli\u003eCompact rear derailleur integrates the wireless unit, charging port, and control switch\u003c\/li\u003e\n\u003cli\u003eDedicated button for Di2 operations and an LED indicator for synchronised shift mode, setup mode, and battery status\u003c\/li\u003e\n\u003cli\u003eWireless communication between shifters and rear derailleur\u003c\/li\u003e\n\u003cli\u003eLow-profile Shadow derailleur design for improved aerodynamics and protection\u003c\/li\u003e\n\u003cli\u003eUltegra wireless hydraulic Servo Wave Di2 STI levers offer precise control, modulation, and power in all riding conditions\u003c\/li\u003e\n\u003cli\u003eCR1632 batteries in levers last approximately 18 to 24 months\u003c\/li\u003e\n\u003cli\u003eEnhanced ergonomic design for improved comfort and control\u003c\/li\u003e\n\u003cli\u003eHyperglide+ technology ensures superior shifting performance under load\u003c\/li\u003e\n\u003cli\u003eXT-derived rotors feature a stainless steel and aluminium three-layer sandwich construction for effective heat management\u003c\/li\u003e\n\u003cli\u003eFully compatible with Shimano’s 12-speed E-Tube Di2 ecosystem\u003c\/li\u003e\n\u003cli data-spm-anchor-id=\"a2ty_o01.29997173.0.i13.737bc921JWGPEI\"\u003eE-Tube electric wiring sold separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"trainSharp Cycling","offers":[{"title":"165mm 50\/34","offer_id":56182269215095,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"165mm 52\/36","offer_id":56182269247863,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"170mm 50\/34","offer_id":56182269280631,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"170mm 52\/36","offer_id":56182269313399,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"172.5mm 50\/34","offer_id":56182269346167,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"172.5mm 52\/36","offer_id":56182269378935,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"175mm 50\/34","offer_id":56182269411703,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true},{"title":"175mm 52\/36","offer_id":56182269444471,"sku":null,"price":2259.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/0977\/6448\/files\/Shimano-Ultegra-R8170-Di2-Disc-Groupset_9.webp?v=1763131216","url":"https:\/\/www.trainsharpcycling.co.uk\/products\/shimano-ultegra-r8170-di2-disc-groupset","provider":"trainSharp Cycling","version":"1.0","type":"link"}