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Shimano Ultegra R8070 Di2 Disc Brake Groupset

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$2,000.99
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Product Description

Shimano

Introducing the Shimano Ultegra R8070 Di2 Disc Brake Groupset - 52/36 11/32. Perfect for the cyclists that wants a little bit more out of their bike. With the Di2 disc brake technology, programmed automatic motion at the touch of a button makes this groupset a highly-regarded upgrade for your bike. Perfect for winter riding, when your hands are suffering from the cold. The difference in the effort and time to actuate the shift between mechanical and Di2 is truly staggering. The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts.

Groupset:

Gear Shifters – The high-performance Ultegra hydraulic disc brake Di2 STI's give you control, modulation and power with minimal effort in all riding conditions. With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear. The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and provides effortless gear shifts. Full and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratio.

Derailleurs – At the front is the R8050 Ultegra Di2 11-speed front derailleur E-tube, smooth shifting is guaranteed thanks to a microchip communication link with the gear levers. What's more, shifting the rear derailleur automatically trims the front derailleur. The biggest difference you will notice is just how much quicker and effortlessly smoother shifting on the front chainrings is, even under load. At the rear is the RD-R8050 Ultegra Di2 11-speed rear derailleur E-tube with a sleek appearance and Low profile Shadow design construction reduces risk of damage in a crash.

Chainset – The HollowTech II 11-speed Ultegra chainset offers an ideal balance of light weight and stiffness. HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load. The chainring teeth have been developed to work in conjunction with 11-speed HG-EV chains for increased contact to provide greater efficiency and improved power transfer. Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight.

Cassette – A lightweight 11-speed HG-EV cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes. Featuring Hyperglide EV sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear.

SPECIFICATION :

Brake Callipers :
ST-R8070 Ultegra hydraulic Di2 STI for drop bar without E-tube wires, pair
- Drop bar STI with shift buttons
- Hydraulic brake lever
- Hydraulic reservoir tank
- Finely tuneable reach adjusters
- Free stroke adjustment
- Two ports for use with E-tube electric cables
- Kit contains left hand bled ST-R8070 STI's, BR-R8070 flat mount brake callipers with pads, hoses and mineral oil (without rotors or adapters)

Front Derailleur : FD-R8050 Ultegra Di2 11-speed front derailleur E-tube, braze on, double
- Designed to work with the wider gear pitch spacing Shimano chainsets without sacrificing shifting performance on bikes with 135 / 142 mm O.L.D.
- Cable tension is adjustable
- 11-speed E-tube Di2 compatible

Rear Derailleur : RD-R8050 Ultegra Di2 11-speed rear derailleur E-tube, SS cage
- Derailleur contains a saver (fuse) function
- High tolerance cold forged aluminium link plates and body construction
- Four self-lubricating micro-machined fluorine-coated link pivot bushings
- 11-speed E-tube Di2 compatible

Chainset : FC-R8000 Ultegra 11-speed double chainset, 52 / 36T
- Compatibility to frames with O.L.D. 135 / 142 mm and 410mm chain stay length
Crank Length Options:
- 165mm
- 170mm
- 172.5mm
- 175mm

Cassette : CS-R8000 Ultegra 11-speed cassette 11 - 32T
- For use with 11-speed HG-EV chains
Chain
CN-HG701 Ultegra 6800
- Sil-Tec surface treatment technology (PTFE plating)
- Zinc-Alloy plated outer links
- 5.62 mm chain width
- Average weight 257 grams

Cables : E-tube Di2 electric wire
- 300mm x 1
- 350mm x 2
- 600mm x 1
- 700mm x 1
- 1000mm x 1

Electronics : - Junctions included (SM-EW90-A E-tube Di2 Junction-A, 3 port and the M-JC41 E-tube Di2 bottom bracket Junction for internal wire routing)
- Di2 internal mount battery
- Di2 internal battery charger direct to SM-EW90 Junction (one hour charge time)


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