Description
| Outer Ring Material | Aluminum/ CFRP |
| Crank Axle Material | Steel |
| Average Weight | 700g,711g |
| Threaded Bb Shell Width | 68/70 |
| Crank Arm Finish | Anodized |
| Compatible Bb Type | Outboard |
| Crank Axle Finish | Plated |
| Gear Arms | 4 |
| Compatible Chain | CN-M8100 |
| Series | Ultegra |
| Inner Ring Material | Aluminum |
| Generation | R8100 |
| Inner Ring Finish | Anodized |
| Crank Arm Length | 160,165,170,172.5,175 |
| Chain Ring Combination | 50-34,52-36 |
| Outer Ring Finish | Anodized |
| Crank Arm Material | Aluminum |
FRONT CHAINWHEEL, FC-R8100, ULTEGRA, FOR REAR 12-SPEED, HOLLOWTECH 2
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