Shimano Dura-Ace CS-7900 10-speed Cassette

The Dura-Ace CS-7900 10-speed cassette by Shimano - weight-optimised and torsion-resistant

In the Shimano CS-7900 Dura-Ace cassette, the four largest sprockets are made of titanium to reduce weight and increase stiffness. The two lightweight metal carrier stars also reduce weight and offer high torsional strength. You can also use the CS-7900 cassette on 11-speed Road freewheels if you additionally use a 1.85 mm spacer. For 8 to 10-speed Road/MTB freewheels, the 1 mm spacer supplied is sufficient.

Specifications:

Application:

Road

Gearing:

10-speed

Gradation:

11-21, 11-23, 11-25, 11-28, 12-23, 12-25, 12-27

Sprocket Material:

steel, titanium

Freehub Compatibility:

Shimano MTB

Note:

compatible with Shimano Road 11-/12-speed using a 1.85 mm spacer

Technical Information:

Series:

Dura-Ace 7900

Spider:

2 (aluminium)

Recommended Chain:

HG 10-speed (e.g. CN-6701)

Features:

• HG cassette
• weight-optimised sprocket design
• improved shifting function for more precise shifts and less weight
• super-light, high-strength aluminium carrier
• the four largest sprockets (7 to 10) made of titanium for less weight, higher rigidity
• diverse gradations
• nickel-plated steel sprocket , anodised lockring

Technology:

HG Cassette
Shimano Hyperglide cassettes (HG cassettes) have strategically-positioned ramps and special tooth profiles so that the chain can be completely guided directly onto the next sprocket. This prevents the chain from just touching the tips of the teeth before it actually touches down. This optimises the chain guide and enables fast, highly efficient shifting.

Models:

11-21:

Gradation:

11-12-13-14-15-16-17-18-19-21 t

Manufacturer Number:

I-CS790010121

11-23:

Gradation:

11-12-13-14-15-16-17-19-21-23 t

Manufacturer Number:

I-CS790010123

11-25:

Gradation:

11-12-13-14-15-17-19-21-23-25 t

Manufacturer Number:

I-CS790010125

11-27: sold-out

Gradation:

11-12-13-14-15-17-19-21-24-27 t

Manufacturer Number:

I-CS790010127

11-28:

Gradation:

11-12-13-14-15-17-19-21-24-28 t

Manufacturer Number:

I-CS790010128

12-23:

Gradation:

12-13-14-15-16-17-18-19-21-23 t

Manufacturer Number:

I-CS790010223

12-25:

Gradation:

12-13-14-15-16-17-19-21-23-25 t

Manufacturer Number:

I-CS790010225

12-27:

Gradation:

12-13-14-15-16-17-19-21-24-27 t

Manufacturer Number:

I-CS790010227

Contents:

• 1 x Shimano Dura-Ace CS-7900 cassette
• 1 x Shimano aluminium lockring
• 1 x Shimano 1 mm spacer (to mount to 8-/9-/10-speed freehub bodies)