Shimano Ultegra Hollowtech II FC-R8100 Front

The Shimano Ultegra Hollowtech II FC-R8100 Front Chainwheel is a cornerstone of Shimano's new 12-speed road groupset, delivering unparalleled transmission efficiency and legendary front shifting performance. Designed for precision and speed, it’s ideal for serious road cyclists.

Seamless 12-Speed Shifting: Engineered for Shimano’s 12-speed system, the FC-R8100 crank provides smooth and responsive gear changes, ensuring optimal performance on every ride. Its refined design ensures compatibility with Shimano’s latest drivetrain technology, enhancing the riding experience.

Versatile Crank Length Options: Offered in crank lengths ranging from 160 to 175 mm, this chainwheel accommodates a wide range of riders. Whether you’re a smaller rider, a triathlete, or someone with specific biomechanical needs, the Ultegra crank ensures a tailored fit for improved performance and comfort.

Lightweight and Efficient Design: Built with Shimano’s Hollowtech II technology, the crank is both lightweight and stiff, maximizing power transfer while minimizing energy loss. This efficiency is key for competitive riders aiming to maximize every pedal stroke.

The Shimano Ultegra Hollowtech II FC-R8100 Front Chainwheel delivers the perfect combination of cutting-edge technology and precision craftsmanship, making it a must-have for riders looking to elevate their performance on the road.

Specifications

Model No	FC-R8100
Series	Ultegra R8100 Series
Color	Series Color
Rear Speeds	12
Compatible Chain	HG 12-speed
Chain Line	44.5 mm
P.C.D.	110 mm
Spider/Gear Arms	4
Chainring Combination	46-36T, 50-34T, 52-36T
Q-Factor	148 mm
Crank Arm Lengths	160 mm, 165 mm, 170 mm, 172.5 mm, 175 mm

Optional Chain Guard\|Without Chain/Bash Guard: Yes
Hollowtech II	Yes
Hollowtech Crank Arm	Yes
Hollowglide	Yes
Compatible Bottom Bracket Type_Outboard	Yes
Recommended Bottom Bracket_Threaded (Normal): SM-BBR60
Recommended Bottom Bracket_Press-Fit	SM-BB72-41B
Threaded Bottom Bracket Shell Width	68 mm, 70 mm
Crank Fixing Screw Included	Yes
Average Weight	702 g (46-36T), 700 g (50-34T), 711 g (52-36T)

Features

Effortless Drivetrain Integration: Seamless compatibility with Shimano’s 12-speed drivetrain for smooth gear changes.
Customizable Crank Arm Options: Available in crank arm lengths: 160 mm, 165 mm, 170 mm, 172.5 mm, and 175 mm.
Flexible Gear Configurations: Chainring combinations: 46-36T, 50-34T, and 52-36T for versatile gearing.
Advanced Power Transfer Design: Hollowtech II design ensures lightweight, stiff, and efficient power transfer.
Enhanced Rigidity with Hollowglide: Hollowglide chainring structure enhances rigidity and reduces weight.
Durable and Smooth Bearings: High-precision sealed bearings for durability and smooth rotation.
Stability and Weight Optimization: Outboard bottom bracket system improves stability and weight distribution.
Comprehensive Compatibility: Compatible with HG 12-speed chains and Shimano bottom brackets.

Technologies

Hollowtech II: Integrates the bottom bracket axle with the crank for superior stiffness and efficient power transfer.
Hollowtech Crank: Hollow-forged crank arms offer lightweight strength for improved acceleration and efficiency.
Hollowglide: Hollow chainring design ensures reduced weight, better power transfer, and precise front shifting.

What's in the box

1x FC-R8100 Chainwheel
1x Crank Fixing Screw

Warranty and support

Covered by the manufacturer's warranty. Warranty claims go through us and we deal with the brand for you.

Shimano warranty terms

Questions after delivery? Ask TBA Guide or WhatsApp us.

Shipping and returns

We ship across India. Shipping is free on orders above ₹2,000 and ₹99 below that. Cash on delivery is available on orders up to ₹20,000, with a COD charge that depends on the order value. For a delivery estimate, enter your pincode in the box above the add-to-cart button: it shows the courier's own estimate for your address, not a promised date. If a parcel is held up we chase the courier until it is delivered. Full shipping policy

Most Shimano products take a little longer to ship.

Returns can be started within 7 days of delivery on unused items in their original condition with all tags and packaging. Apparel, helmets, gloves and similar items are returnable; wetsuits and products discounted by more than 5% are not. Compatibility questions are not grounds for a return unless our listing was wrong, so ask us before you order if you are unsure. Return shipping is arranged by you; on an accepted return you can choose an exchange, store credit or a refund after shipping and transaction charges. Orders can be cancelled only until they are processed. Full return and refund policy