With Di 2 technology shifting is easy & precise
- just a light touch as soft as a mouse click is sufficient for the front or rear
...

Digital Integrated Intelligence or Di 2: with programmed automatic motion at the touch of a switch the Dura-Ace Di 2 rear derailleur is quick smooth & effortless making for unmatched drivetrain efficiency Programmed automatic motion at the touch of a switch makes this derailleur quick smooth & effortless to shift The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates corrosion & stretching but provides effortless gear shifts Derailleur contains a saver &40;fuse&41; function where the inner structure is protected from strong impacts 11-27T wide gear ratio capacity will cater for compact setups as well as the traditional road double Full carbon fibre inner & outer pulley plates enhance rigidity & reduce weight Titanium B axle bolt for further weight savings High tolerance cold forged aluminium link plates & body construction is extremely light & durable Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting Pulleys are made from tough Du Pont Zytel for longer life & less chain noise 10-speed Dura-Ace Di 2 compatible Weight is 225 grams ...

Redesigned rear system with new spring mechanism Redesigned lighter shorter & more equal shifting operation Carbon pulley plate Wide link design to reduce shifting deflection & increases rigidity giving precise shifting over an extended time period Max front difference 16T Max rear sproket: 28T Total capacity: 33T Weight: 158g ...

Programmed automatic motion Carbon pulley plate Saver (fuse) function protects inner structure from strong impact Wide link design to reduce shifting deflection by increasing rigidity Precise shifting over an extendedtime period Max rear sprocket: 28T Max front difference: 16T Total capacity: 33T Weight: 217g ...

Compatible with 11T min. top sprocket 28T max low sprocket Total capacity: 33TSMARTCAGE (11/13T) ...

Shimano FT30 6 / 7-speed rear derailleur SIS rear index shifting Using the smallest cage in the Shimano range this derailleur is suitable for folding bikes or wheel sizes from 16 inch &40;compatible with single chainring only&41; Compatible with 11 tooth sprocket Wheel type cable guide provides super light shifting action ...

Shimano FT30 6 / 7-speed rear derailleur SIS rear index shifting Using the smallest cage in the Shimano range this derailleur is suitable for folding bikes or wheel sizes from 16 inch (compatible with single chainring only) Compatible with 11 tooth sprocket Wheel type cable guide provides super light shifting action ...

Great value Alivio rear derailleur offering crisp performance on- & off-road for 9-speed drivetrains Wide link design increases ...

Deore M4120 Shadow 10/11-speed rear derailleur for the dependable shifting performance & durability. Shadow design features a super low profile design & optimized slant angle for super light shifting action Single tension spring prevents contact with the chainstay resulting in a silent ride Direct cable routing prevents snagging from any trail side hazards Wide alloy links & pivot body Fluorine-coated link pin bushings Strong return spring for a positive shifting feel Durable 11T bearing pulleys for low friction Top normal spring uses the spring to select higher gears HG-X11 11-speed & HG-X 10-speed compatible Max low sprocket: 42T (2x 11/2x 10-speed) 41T capacity SGS cage ...

Wide link top normal Deore rear derailleur Wide link design increases rigidity & service life Top normal return spring lends to incredibly intuitive operation when combined with Rapidfire shifters Alloy & steel construction leads to lower weight without compromising strength & durability Large 11 tooth pulleys are used for longer life Two fluorine-coated link bushings for low-friction operation 8- & 9-speed compatible Compatiblewith 28-34T low sprocket Average weight 299 grams ...