RD-R42S
R9 Rear Derailleur for 2 x 9/10 Speed
Short Cage
Max. sprocket: 28T
Total Capacity 33T
Specifications
| Series | R9 | R9 |
| Model No. | RD-R42 | RD-R42S |
| Cassette Compatibility | 10 / 9 Speed | 10 / 9 Speed |
| Cage Type | Long Cage | Short Cage |
| Front Chainring | Triple | Double |
| Max. Sprocket | 28T | 28T |
| Min. Sprocket | 11T | 11T |
| Total Capacity | 39T | 33T |
| Guide Pulley | Engineering Composite with Steel Bushing | Engineering Composite with Steel Bushing |
| Tension Pulley | Engineering Composite with Steel Bushing | Engineering Composite with Steel Bushing |
| Bracket Body | Aluminum / Black | Aluminum / Black |
| Bracket Pivot Seal | N | N |
| Plate Body | Composite / Black | Composite / Black |
| Plate Pivot Seal | N | N |
| Outer Link | High-Polished Aluminum | High-Polished Aluminum |
| Inner Link | Black Painted Steel | Black Painted Steel |
| Link Pin Bushing | N | N |
| Outer Plate | Black Painted Steel | Black Painted Steel |
| Inner Plate | Black Painted Steel | Black Painted Steel |
| Weight | 288g | 265g |
| Compatibility | Shimano 9/10 Speed Road Rear Derailleur Compatible | Shimano 9/10 Speed Road Rear Derailleur Compatible |
