{"product_id":"shimano-105-r7170-di2-12-speed-road-groupset","title":"Shimano 105 R7170 Di2 2×12 Complete Road Groupset – Electronic Shifting \u0026 Hydraulic Disc Brakes","description":"\u003cp\u003eThe \u003cstrong\u003eShimano 105 R7170 Di2 2×12 road groupset\u003c\/strong\u003e brings electronic shifting and hydraulic disc braking to club rides, sportives and everyday adventures. With a choice of chainring combinations and cassette ranges, you can build a setup that feels comfortable on familiar roads and gives you lower gears for hillier days.\u003c\/p\u003e\n\u003cp\u003eMoving to electronic shifting can give a familiar bike a fresh feel. The Bike Lab can help you work out what’s worth keeping and where a change will make a difference, with personal advice throughout your upgrade. Every order supports an independent bicycle business built around keeping good bikes riding well.\u003c\/p\u003e\n\u003ch2\u003eBuilt for the road\u003c\/h2\u003e\n\u003cp\u003eDi2 delivers precise, repeatable gear changes at the touch of a button. The shifters communicate wirelessly with the rear derailleur, while both derailleurs connect to an internal rechargeable battery. This keeps gear cables out of the cockpit while providing a shared power supply for the drivetrain.\u003c\/p\u003e\n\u003cp\u003eAutomatic front-derailleur trim helps reduce chain rub as you move through the cassette. Shimano’s E-TUBE PROJECT Cyclist app lets you personalise compatible button functions and choose manual, semi-synchronised or synchronised shifting.\u003c\/p\u003e\n\u003cp\u003eAdjustable lever reach helps you find a comfortable hand position, while Shimano 105 hydraulic disc brakes provide controlled braking on descents and in changing conditions.\u003c\/p\u003e\n\u003ch2\u003eWhat’s included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano 105 ST-R7170 left and right Di2 shift\/brake levers\u003c\/li\u003e\n\u003cli\u003eShimano 105 BR-R7170 front and rear hydraulic disc brake calipers\u003c\/li\u003e\n\u003cli\u003eShimano 105 RD-R7150 12-speed rear derailleur\u003c\/li\u003e\n\u003cli\u003eShimano 105 FD-R7150 front derailleur\u003c\/li\u003e\n\u003cli\u003eShimano 105 FC-R7100 HOLLOWTECH II double crankset\u003c\/li\u003e\n\u003cli\u003eShimano 12-speed cassette in your selected ratio\u003c\/li\u003e\n\u003cli\u003eCompatible Shimano 12-speed chain\u003c\/li\u003e\n\u003cli\u003eBT-DN300 internal rechargeable Di2 battery\u003c\/li\u003e\n\u003cli\u003eEW-EC300 charging cable\u003c\/li\u003e\n\u003cli\u003eTwo EW-SD300 electric wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eChoose your setup\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCrank lengths:\u003c\/strong\u003e 160, 165, 170, 172.5 or 175mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChainrings:\u003c\/strong\u003e 50\/34T or 52\/36T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCassette:\u003c\/strong\u003e 11–34T or 11–36T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOptional rotors:\u003c\/strong\u003e choose no rotors, two 160mm rotors, or a 160mm front \/ 140mm rear pair. Rotors are included only when a rotor option is selected.\u003c\/p\u003e\n\u003ch2\u003eCompatibility and support\u003c\/h2\u003e\u003cp\u003eRequires a suitable road frame with flat-mount disc brake mounts, compatible front and rear derailleur fittings, and a freehub suitable for the selected Shimano 12-speed road cassette. Your frame must accommodate the internal Di2 battery and derailleur wiring.\u003c\/p\u003e\u003cp\u003eThe crankset uses a 24mm spindle and requires the correct HOLLOWTECH II-compatible road bottom bracket for your frame. Rotor mounting and permitted rotor sizes must also suit your wheels, frame and fork.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom bracket sold separately. No power meter included.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor help choosing gearing or checking your current bike, \u003ca href=\"https:\/\/thebikelab.org\/pages\/contact\"\u003eget in touch\u003c\/a\u003e with its make, model, year and existing setup. The Bike Lab can help you work through the details before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUK delivery only.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"product__accordion accordion\"\u003e\u003cdetails\u003e\u003csummary\u003e\u003ch2 class=\"h4 accordion__title\"\u003eSpecification:\u003c\/h2\u003e\u003c\/summary\u003e\u003cdiv class=\"accordion__content rte\"\u003e\u003cul\u003e\n\u003cli\u003eDrivetrain: Shimano 105 Di2, 2×12-speed road\u003c\/li\u003e\n\u003cli\u003eShifting: electronic Di2 with wireless shifters and wired derailleurs\u003c\/li\u003e\n\u003cli\u003eShift\/brake levers: ST-R7170\u003c\/li\u003e\n\u003cli\u003eBrake calipers: BR-R7170 hydraulic disc, flat-mount\u003c\/li\u003e\n\u003cli\u003eRear derailleur: RD-R7150\u003c\/li\u003e\n\u003cli\u003eFront derailleur: FD-R7150\u003c\/li\u003e\n\u003cli\u003eCrankset: FC-R7100 HOLLOWTECH II, without power meter\u003c\/li\u003e\n\u003cli\u003eCrank lengths: 160, 165, 170, 172.5 or 175mm\u003c\/li\u003e\n\u003cli\u003eChainrings: 50\/34T or 52\/36T\u003c\/li\u003e\n\u003cli\u003eCassette: 11–34T or 11–36T\u003c\/li\u003e\n\u003cli\u003eChain: compatible Shimano 12-speed\u003c\/li\u003e\n\u003cli\u003eBattery: BT-DN300, included\u003c\/li\u003e\n\u003cli\u003eCharging cable: EW-EC300, included\u003c\/li\u003e\n\u003cli\u003eDerailleur wiring: two EW-SD300 wires, included\u003c\/li\u003e\n\u003cli\u003eRotors: optional 160\/160mm or 160\/140mm pair\u003c\/li\u003e\n\u003cli\u003eBottom bracket: sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e","brand":"The Bike Lab","offers":[{"title":"160mm \/ 50\/34T \/ 11-34T \/ No rotors","offer_id":64179542425930,"sku":null,"price":699.99,"currency_code":"GBP","in_stock":false},{"title":"160mm \/ 50\/34T \/ 11-34T \/ 2 × 160mm rotors","offer_id":64179542458698,"sku":null,"price":769.99,"currency_code":"GBP","in_stock":false},{"title":"160mm \/ 50\/34T \/ 11-34T \/ 160mm 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