The page compares the differences between the 11-speed Shimano Dura-Ace (R9100), Ultegra (R8000), and 105 (R7000) cassettes.
| Comparison | Dura-Ace | Ultegra | 105 |
|---|---|---|---|
| Model number | CS-R9100-11 | CS-R8000-11 | CS-R7000-11 |
| Technology | Hyperglide | Hyperglide | Hyperglide |
| Cog material | Titanium, steel | Steel | Steel |
| Spider material | Aluminum, carbon | Aluminum, carbon | Aluminum |
Cassette sizes
The 11-speed Shimano Dura-Ace, Ultegra, and 105 cassettes are available in various sizes according to the table below.
| Cassette size | Dura-Ace | Ultegra | 105 |
|---|---|---|---|
| 11-25T | Yes | Yes | |
| 11-28T | Yes | Yes | Yes |
| 11-30T | Yes | Yes | Yes |
| 11-32T | Yes | ||
| 12-25T | Yes | Yes | Yes |
| 12-28T | Yes | Yes | |
| 14-28T | Yes |
Cassette weight comparison
| Cassette size | Dura-Ace | Ultegra | 105 |
|---|---|---|---|
| 11-25T | 175g | 232g | |
| 11-28T | 193g | 251g | 284g |
| 11-30T | 211g | 269g | 304g |
| 11-32T | 320g | ||
| 12-25T | 189g | 243g | 269g |
| 12-28T | 205g | 292g | |
| 14-28T | 300g |
Cog size and materials
The Shimano 105 and Ultegra cassettes use steel cogs.
Steel and titanium are used in the Dura-Ace cassette. From the photo above, the darker grey (largest 5) cogs are titanium.
The table below shows the breakdown between steel vs titanium cogs in a Shimano Dura-Ace cassette.
| Cog size | Steel cogs | Titanium cogs |
|---|---|---|
| 11-25T | 11, 12, 13, 14, 15, 16T | 17, 19, 21, 23, 25T |
| 11-28T | 11, 12, 13, 14, 17, 19T | 19, 21, 23, 25, 28T |
| 11-30T | 11, 12, 13, 14, 15, 17T | 19, 21, 24, 27, 30T |
| 12-25T | 12, 13, 14, 15, 16, 17T | 18, 19, 21, 23, 25T |
| 12-28T | 12, 13, 14, 15, 16, 17T | 19, 21, 23, 25, 28T |