Original
Specifications
Top Features of the Shimano Dura-Ace 7900 C24 CL Clincher WheelSet
The WH-7900 CL carbon laminate clincher wheel is specifically designed to meet the demanding strength, weight and rolling criteria of Pro Road Racers.
Carbon laminate clincher rim
8, 9 and 10-speed compatible rear wheel
Supplied with Q/R skewer and wheel bag
Cold forged, machined aluminium hub shell
Oversized 7075 alloy axle
Titanium Freehub body
Quick pawl engagement
Labyrinth double-contact sealing
Borozon treated bearing races
Digital click bearing adjustment
Spokes: 16 (front) and 20 (rear) stainless steel butted, bladed spokes
Weights: 597g (front), 749g (rear)
The Clincher rim uses alloy braking surface for high braking performance with standard brake pads and has a low rim weight and is achieved by reducing the alloy wall thickness from 1.3 mm down to 0.7 mm, then a patented phosphoric acid anodizing process is used to bond the carbon fibre to the alloy giving an excellent combination of low weight, strength and rigidity.
Braking Surface: The clincher rim uses an alloy braking surface for high performance with standard brake pads.
Rolling Weight: The low rim weight is achieved by reducing the alloy wall thickness from 1.3 mm down to 0.7 mm, then a patented phosphoric acid anodizing process is used to bond the carbon fibre to the alloy giving an excellent combination of low weight, strength and rigidity.
Spokes: The WH7900 C24 CL is laced with 20 stainless steel butted, bladed, and straight pull spokes with an elbow-less design for a strong yet compliant wheel. The spoke eyelets are carbon reinforced for increased durability. High lateral rigidity is produced by a 3 mm offset asymmetric rim and wide flange spacing.
Hub and Freehub: The freehub uses a quick pawl engagement every 10 degrees for instant power transfer.
Labyrinth double-contact sealing effectively shuts out water and dirt. Borozon treated bearing races with super mirror finish reduces friction with digital click bearing adjustment to make them quick and easy to maintain.
A cold forged, machined aluminium hub shell and oversized 7075 alloy axle combined with a titanium Freehub body keep the wheel weight to a minimum.
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.