Shimano Dura-Ace CS-7900 cassette review

Great compromise between durability and weight

Our rating 
4.0 out of 5 star rating 4.0
GBP £179.99 RRP | USD $272.52
Shimano Dura Ace Cassette CS-7900

Our review

Reasonably hard wearing and fairly light too
Skip to view product specifications

The largest three cogs on the new Dura-Ace cassette are supported by a separate cold-forged aluminium alloy carrier, as are the next two sprockets.


This increases stiffness and reduces weight – as does the fact that the largest four cogs are made from titanium. All this means that the cassette weighs in at a paltry 185g.

Shifting performance up and down is almost always smooth and positive, although sometimes the transitions are so smooth you catch yourself wondering whether it has changed gear at all.


The cassette is available in eight different sizes: 11-21t, 11-23t, 11-25t, 11-27t, 11-28t, 12-23t, 12-25t and 12-27t.

Product Specifications


Name Dura Ace 7900 10 Speed Cassette (09)
Brand Shimano

Weight (g) 185
Material Alloy Nickel Plated Titanium