Steel-titanium (6 Ti sprockets) version: excellent compromise between weight savings and cost - Ultra-Shift aluminium frame for last two sprocket triplets: precision and greater stiffness, weight savings - Ultra-Shift sprockets synchronization: improved shifting precision, less stress for the chain - Ultra-Shift teeth shape: upshift optimization - Optimized teeth space: longer life, lower wear - Nickel-chrome surface treatments on steel: longer life, lower wear - Light-alloy lockring: weight savings - Weight: 177g

Chorus sprockets use the Ultra-Drive system and are the fruit of continuous research and development to improve our products. The Ultra-Drive system makes shifting more precise and fluid, especially thanks to the careful machining and treatments that the sprocket teeth have undergone. The special sprockets pattern interfaces perfectly with the rest of the drivetrain components, especially the chain and chainrings, thus bringing performance to levels of outstanding excellence.

Campagnolo Veloce UD 10sp Cassette 2011 - steel - galvanized - ultra drive - Weight: 258g 1125

- Lightweight 10-speed cassette with rigid alloy sprocket carrier for Reduced weight and better shifting performance, even under the most demanding gear changes - Hyperglide sprockets have been designed to Reduce weight with improve teeth shaping providing accurate shifting and Reduced wear - Wide gear range to meet the demands of all types of rider - Weight: 208g (11-23 teeth)

- Super lightweight 10-speed cassette with a rigid alloy carrier for excellent shifting even under the most demanding gear changes - Hyperglide sprockets have a computer designed tooth configuration with contouRed shift gates, resulting in a crisp smooth shift even under load - Close ratio gearing allows a more efficient use of energy through finer cadence control - Largest sprockets are mounted on a lightweight alloy carrier to Reduce weight and increase rigidity - 4 largest sprockets are made from titanium to Reduce weight without sacrificing strength - Sprockets are extensively cut away and drilled to further Reduce weight without Reducing rigidity - Nickel-plated finish offers hard wearing resistance to corrosion - Alloy cassette lockring - For Super Narrow 10-speed HG chains - Weight 163 grams for 11-23 tooth

Sram 10 Spd OG1090 Red/Black Cassette

The main cogset of the OG 1090 cassette is machined out of a single forged form that is heat treated and then shaped in a complex series of CNC-guided operations. Weight, stiffness, and strength-wise, the OG 1090 Cassette delivers titanium's weight with solid steel's superior strength and stiffness.

Sram 10 Spd PG 1070 Cassette

To take full advantage of the power and promise of the SRAM Force groupset, you need a cassette and chain that are up to the task. With the new PG 1070 Cassette's semi-spidered design, we have maintained the high level of shifting performance while creating a much quieter cassette/chain combination.