Shimano Ultegra FC-R8100 Crankset 52/36T 172.5mm 12 Speed ​​IFCR8100DX26

Shimano ULTEGRA FC-R8100 12-Speed ​​Crankset 52/36T
HOLLOWTECH II Power: Superior Efficiency and Excellent Transfer

The new Shimano ULTEGRA FC-R8100 2x12-speed crankset redefines excellence in road cycling with both its aesthetically striking iconic design and improved power transmission. Developed with Shimano's " Science of Speed " philosophy, this crankset combines maximum efficiency, durability, and lightness with every pedal stroke.

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⚙️ Superior Engineering: Science of Speed

When developing the new ULTEGRA 12-speed groupset, Shimano focused not only on speed but also on a balance of control, comfort, and performance .
The FC-R8100 crankset maintains Shimano's legendary shifting precision while offering increased rigidity and reduced weight .
Result: Faster, smoother, and more energy-efficient driving in all conditions.

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🔧 Key Features

• HOLLOWTECH II technology: The perfect balance between weight, stiffness, and durability.

• HOLLOWGLIDE external gear structure: High rigidity and low weight thanks to hollow aluminum construction.

• New 4-arm design: Optimizes power transfer, reduces weight.

• 52/36T gear ratio: Ideal for race-focused performance and versatile use.

• Wide range of handlebar length options (160–175 mm): Ergonomics suitable for every rider.

• Lightweight and rigid construction: Superior energy efficiency during long climbs and sprints.

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⚙️ Technical Specifications

• Area of ​​Use: Road

• Group: Ultegra R8100

• Model: FC-R8100

• Gear Compatibility: 2x12-speed

• Gear Ratio: 52-36T

• Q-Factor: 146 mm

• Chain Compatibility: CN-M8100 HG 12-speed

• Chain Length: 43.5 mm

• PCD (bolt pitch): 110 mm

• Bottom Bracket Compatibility: HOLLOWTECH II (BSA 68/70 mm)

• Crank Arm Lengths: 160 mm / 165 mm / 170 mm / 172.5 mm / 175 mm

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🧩 Material Quality

• Crankshaft: Aluminum (Anodized surface)

• Axle: Steel (Coated)

• Large Gear: Aluminum / CFRP composite

• Small Gear: Aluminum

It is optimized for durability, lightness, and high power transfer.

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⚖️ Weight and Compatibility

Its lightweight and rigid structure minimizes energy loss during long rides.
Compatible Bottom Brackets:

• SM-BBR60 (BSA threaded type)

• SM-BB72-41B (Pressfit tip)

Note: The center hub is not included in the product package.

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📦 Box Contents

• 1 x Shimano ULTEGRA FC-R8100 12-speed Crankset (52/36T)

• Center hub is not included.

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🧠 Technologies

🔹 HOLLOWTECH II

Manufactured using Shimano's own forging technology, this system provides better weight distribution and pedal stability thanks to its external bearing bottom bracket structure.
Result: More efficient power transfer, more efficient driving, and longer-lasting durability.

🔹 HOLLOWGLIDE

The gapless external gear structure provides high rigidity while reducing unnecessary weight.
This makes front gear shifts sharper , faster , and quieter .

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💡 Shimano's "Science of Speed" Philosophy

The new ULTEGRA series aims for perfect harmony not only in the components but in the entire driving experience.
The FC-R8100 crankset offers maximum power transfer and smooth gear changes for everyone from professional racers to performance-oriented amateurs.

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Manufacturer Code: IFCR8100AX26
EAN: 4550170893781
UPC: 192790893785

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Shimano ULTEGRA FC-R8100 12-Speed ​​Crankset 52/36T —
The perfect balance of lightness, strength, and aesthetics.
Feel the Shimano engineering with every pedal stroke. 🚴‍♀️💨