Gear Ranges: 11x23, 12x23, 12x25 or 12x27
Weight: 235 g. (12x25)

Nickel plated Ultegra 6600 10-speed cassettes feature computer designed Hyperglide (HG) sprockets that incorporate specifically positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. Works best with Shimano CN-6600 or CN-7800 chain. 10-speed Combinations.

Gear Ranges: 12x21, 12x23, 12x25 or 12x27
Weight: 190 g. (12x25)

Shimano Dura-Ace 7800 10-speed cassettes feature a superior surface treatment that has been applied to the titanium sprockets to increase durability by approximately 30%. The sprocket width has been slightly reduced to achieve chain compatibility and only increases the overall weight of the cassette sprocket by 17 grams compared to the 9-speed CS-7700 sprocket. The CS-7800 sprocket is also compatible with the 9-speed freehub because it is designed to have nearly the same width.

Gear Ranges: 11x21 or 11x23
Weight: 174 g. (11x23)

Shimano Dura-Ace 7800 10-speed cassettes feature a superior surface treatment that has been applied to the titanium sprockets to increase durability by approximately 30%. The sprocket width has been slightly reduced to achieve chain compatibility and only increases the overall weight of the cassette sprocket by 17 grams compared to the 9-speed CS-7700 sprocket. The CS-7800 sprocket is also compatible with the 9-speed freehub because it is designed to have nearly the same width.

Gear Ranges: 11x21, 11x23, 12x23, 12x25 or 13x26
Weight: 194 g. (12x25)

The Record UD 10 speed cassettes use the race proven Ultra-Drive system. Tested under all weather and race conditions at the Tour De France, the Record Ultra Drive system worked to perfection. 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.
Please Note: The cassette lock-ring is included ONLY on 11 tooth cassettes.

Gear Ranges: 11x25 or 13x29
Weight: 198 g. (11x25)

The Record UD 10 speed cassettes use the race proven Ultra-Drive system. Tested under all weather and race conditions at the Tour De France, the Record Ultra Drive system worked to perfection. 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.
Please Note: The cassette lock-ring is included ONLY on 11 tooth cassettes.

Gear Ranges: 11x23, 12x25 or 13x26
Weight: 159 g. (12x25)

The Record UD 10 speed titanium cassettes use the race proven Ultra-Drive system. Racers and enthusiasts are always looking to reduce weight without sacrificing performance. One way we've done this is replacing our steel-and-titanium sprocket set with an all-titanium one, now manufactured in the Ultra·Drive profile. Its tooth profile contributes to Records precise and smooth gear changing. Tested under all weather and race conditions at the Tour De France, the Record Ultra Drive system worked to perfection.
Please Note: The cassette lock-ring is included ONLY on 11 tooth cassettes.

Gear Ranges: 11x23, 11x25, 12x25 or 13x26
Weight: 230 g. (12x25)

The Chorus UD 10 speed cassettes use the Ultra-Drive system and are the fruit of continuous research and development to improve 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.
Please Note: The cassette lock-ring is included ONLY on 11 tooth cassettes.

Gear Ranges: 13, 14, 15, 16, 17, 19, 21, 23, 26, 29
Weight: 280 g.

The Chorus UD 10 speed 13x29 cassette use the Ultra-Drive system and are the fruit of continuous research and development to improve 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.
This cassette must be used with a Chorus or Record 10-speed medium cage rear derailleur.
Please Note: The cassette lock-ring is NOT included.

Gear Ranges: 11x23, 11x26 or 12x25
Weight: 220 g. (11x26)

Sram OG-1070 10-speed cassettes are designed for professionals who value innovation and seek out every competitive advantage they can get. Sram’s super-light revolutionary componentry utilizes new technologies and material advancements to deliver top-end performance.

Gear Ranges: 11x23 or 11x26
Weight: 155 g. (11x23), 166 g. (11x26)

The OG-1090 Cassette, simplicity means elegance, efficiency, and performance. The main cog set is machined out of a single forged form that is heat treated and then shaped in a complex series of CNC-guided operations. One-piece PowerDome™ construction offers improved stiffness versus traditional designs and better power transfer to the wheel-it's also 15% stronger than its nearest competitor. The sprockets themselves (including two free cogs) utilize SRAM's proprietary OpenGlide™ design for smooth-as-silk up- and downshifts.

Gear Ranges 9-speed : 11x21, 11x23, 12x21, 12x23 or 12x25
Weight: 176 g. (12x25)

The Dura-Ace 7700 9-speed cassettes feature three precision-made light alloy sprocket carriers that reduce weight while increasing sprocket stiffness. Dura-Ace cogs combine titanium and chrome-moly which keeps the weight down, maintains strength, and assures maximum torque response. Lightweight 9-speed sprockets provide a wider gear choice while weighing approximately the same as the previous 8-speed cluster. Dura-Ace lock-ring included.

Gear Range 9-speed : 12-13-14-15-17-19-21-24-27.
Weight: 198 g.

The Dura-Ace 7700 9-speed 12x27 cassette feature three precision-made light alloy sprocket carriers that reduce weight while increasing sprocket stiffness. Dura-Ace cogs combine titanium and chrome-moly which keeps the weight down, maintains strength, and assures maximum torque response. Lightweight 9-speed sprockets provide a wider gear choice while weighing approximately the same as the previous 8-speed cluster. Dura-Ace lock-ring included.

For use with post-1999 Record or Chorus hubs and cassettes that begin with a 12 or 13 tooth cog position. Steel. 19 g.

For use with post-1999 Record or Chorus hubs and cassettes that begin with a 11 tooth cog position. Steel. 15 g.