- Shimano Dura Ace 7900 10 Speed Front Derailleur - Band-On
Shimano Dura Ace 7900 10 Speed Front Derailleur - Band-On
Shimano Dura Ace 7900 10 Speed Front Derailleur - Band-On
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.
Top Features of the Shimano Dura Ace 7900 10 Speed Front Derailleur - Band-On
- Compatible with Dura-Ace ST7900 shifters and FC7900 / FC7950 chainsets only for optimum shifting performance
- Thanks to improvements in the cage design outer trim is no longer required allowing the rider to focus on racing
- Lightweight nickel-plated forged alloy chain cage reduces weight and increases rigidity whilst resisting abrasion from the chain
- Extra wide pivot link and optimised spring tension combined with the ST7900 STI lever gives a rigid, flex free shift while being smooth and light action
- Forged aluminium construction reduces weight without sacrificing durability
- Hard-wearing Dura-Ace finish
- Maximum capacity of 16 teeth, for use with outer rings 50-56T
- Weight: 67 g (braze-on)
About Front Derailleurs
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.
About the Shimano brand
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.
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Magazine reviews for Shimano Dura Ace 7900 10 Speed Front Derailleur - Band-On
Review from Bikeradar
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
Review from road.cc
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
Product Q & A
Ask your questions and share your answers.
In terms of cranks, just need to adjust the height and H/L screws, there is no special compact crank front deraileur. Although unless you do lots of real hill climbing, IMHO, you are better off getting a classic, 53/39 with a big cassette, like a 12/27. Swapping cassettes is easy and common, swapping cranks when you realise you have a flat stage (race, ride, whatever) is a lot harder.
I emailed Cannondale, but they didn't reply.
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