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Technical Documents
Features
- Iconic Shimano cap-free design
- 2-pices drankset with intergrated BB design
- Anodized surface
- Hyperdrive SG-X chainrings for best front shifting performance
- Gearing: 50-34T
Specifications
| Model Number | FC-4550-S |
| Series | Non-Series |
| Crank Construction | 2-Piece |
| Cassette Compatibility | 9-speed |
| Chain Compatibility | Super Narrow HG for 9-speed |
| Hyperdrive | yes |
| Dual SIS | yes |
| Reinforced Spider | - |
| Chainring Sets | 50-34T |
| Bolt Circle Diameter | 110mm |
| Crank Arm Length | 165/170/175mm |
| Crank Arms | forged aluminum/anodized |
| Chainrings | aluminum/anodized |
| Chain Guard | no |
| Bottom Bracket | SM-FC4500 |
| Chain Line | 43.5mm |
| Spindle Length | - |
| BB Shell Width | 68/70mm |
| Average Weight |
