Shimano Ultegra FC-R8100 12-Speed Crankset 172.5mm 50-34T HOLLOWTECH II Road IFC
Shimano Ultegra FC-R8100 is a genuine Shimano crankset delivering precise, reliable shifting for road bike riders.
Genuine Shimano Ultegra — brand new in retail packaging.
Will it fit? This is a 12-Speed HOLLOWTECH II crankset (172.5mm, 50-34T). Pairs with a 24mm HOLLOWTECH II bottom bracket (sold separately) for Shimano 12-Speed road drivetrains.
Key Specifications
Brand | Shimano |
Series | Shimano Ultegra FC-R8100 |
MPN | FC-R8100 |
Type | Crankset |
Speeds | 12-Speed |
Key Spec | 172.5mm, 50-34T |
Material | Aluminum (HOLLOWTECH II hollow-forged) |
Weight | 700 g (24.7 oz) |
Color | Grey / Black |
Country of Origin | Japan |
Condition | Brand new — original Shimano retail packaging |
Technology Highlights
✓ HOLLOWTECH II hollow-forged arms give a high stiffness-to-weight ratio for efficient power transfer.
✓ 24mm steel spindle provides a stiff, reliable HOLLOWTECH II interface.
✓ Four-arm asymmetric spider is stiff and light for strong power transfer.
✓ Genuine Shimano quality — consistent performance and durability.
What's in the Box
1 × Shimano Ultegra FC-R8100 crankset (chainrings as specified)
Documentation (as supplied)
Original Shimano retail packaging
Brand new in retail packaging. Ships from Ontario, California (US domestic) · Estimated delivery 3–5 business days · Free 30-day returns.
