Shimano Ultegra FC-R8100 12-Speed Crankset 172.5mm 52-36T 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, 52-36T). 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, 52-36T


Material
Aluminum (HOLLOWTECH II hollow-forged)


Weight
711 g (25.1 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.