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Shimano Dura Ace 7900 10 Speed Front Derailleur - Band-On
| Band On 28.6mm | Add this item to your wishlist | |||||
| Band On 31.8mm | Add this item to your wishlist | |||||
| Band On 34.9mm | Add this item to your wishlist | |||||
Elite road racers demand reliable and precise shifting, and with 10-speed compatibility and super-lightweight yet durable components, the Dura-Ace front double derailleur delivers.
Various derailleur systems were designed and built as far back as the late 1800s. A French bicycle tourist, writer and cycling promoter Paul De Vivie (1853-1930), invented a two speed rear derailleur in 1905 which he used on forays into the Alps, and we wonder if 20 gears are enough. Since then there has been many advancements in the number of gears, materials and reductions in weight. Wiggle lists a large selection of front and rear derailleurs catering for double and triple systems with 7, 8, 9, 10 and even 11 speed cassettes.
Shimano are the makers of the world's most well known cycle component brand. Established in 1921 when the first cycle freewheel was forged. Shimano produce drivetrains, wheels, pedals, shoes, cycling clothing and pretty much every Shimano cycle accessory you can think of! Famous for their top end products ridden by the pro's, Dura-Ace and XTR, which cover both road and MTB's. At Shimano, they're doing everything they can to respond to heightened environmental concerns. Shimano are proud to be a producer of bicycle components that help people to enjoy outdoor sports and interact with nature through healthy non-polluting activities. In their 87 plus years of existence Shimano have accumulated a wealth of technology and product development and expertise that serves as the driving force behind their continually evolving product line.
The 7900 front mech, along with the front shifter that controls it, has a different cable pull ratio to any other Shimano front mech, so they only work together - so no mixing and matching of parts allowed. It works great though.
There's no need to have a trimming step in the shifter throw any more, as when set up correctly this front mech can handle any combination of front to rear gear choice without a hint of chain rub.
It's a wonderful bit of design, and with cold-forged alloy construction for the main body parts and nickel-plated aluminium alloy plates this is a fantastic, stiff front mech.
It works with standard and compact chainrings (50t to 56t top gear max with a capacity of 16t) and comes in both braze-on and clamp-on designs for three seat tube diameters - 28.6/31.8/34.9mm. Both options are individually designed. Weight is 64g.
No trimming needed plus smooth and almost silent shifting
The design of the link has been improved so you get a slightly lighter action in both directions. But the most noticeable difference here is that you no longer get a trim option - the small movement to adjust the plate position without moving from the big to the small chainring. The wider link means you don't need it, which makes life just a little easier. You can even - if you're some kind of crazy anarchist - run the chain from big chainring to big sprocket and there's no rubbing on the front mech.
Refined performance and no need to trim take it to a higher level
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