Shimano BB-R9100 Dura-Ace Bottom Bracket (Threaded 68mm)

BB-R9100 SHIMANO DURA-ACE - Bottom Bracket - Threaded - HOLLOWTECH II - 68/70 mm shell width

The Shimano Dura Ace BB-R9100 bottom bracket features smaller lightweight bearings and an advanced seal construction for smoother rotation and increased durability. It is designed to work in combination with the Dura-Ace R9100 crankset to offer optimal stiffness and a smoother pedal stroke.

 BB-R9100 is a BSA bottom bracket recommended for Hollowtech II compatible cranks with 24mm axles. It fits into bottom bracket shells with 68 or 70 mm width. The bearing cups are made of light aluminium and are anodised.

Key Features

• Compatibility: Suitable for all Shimano road cranksets with integrated axle Ø 24 mm

• Bearing System: Smaller lightweight bearings for smooth rotation

• Seal Construction: Optimized sealing system with reduced friction for durability

• Shell Type: BSA (Threaded, English)

• Shell Width: 68 mm / 70 mm

• Hollowtech II: High stiffness, low weight, improved power transfer

• Material: Anodized aluminium and carbon fibre reinforced plastic

• Durability: Advanced design ensures long-lasting performance

• Precision Fit: Designed for Hollowtech II compatible cranks

• Weight Efficiency: Lightweight for faster acceleration and reduced effort

Product Specifications

• Type: Bottom Bracket

• Model: BB-R9100

• Shell Type: BSA (Threaded, English)

• Shell Width: 68 mm / 70 mm

• Axle Diameter: 24 mm

• Bearing Material: Lightweight precision bearings

• Cup Material: Anodized aluminium

• Additional Material: Carbon fibre reinforced plastic

• Hollowtech II Compatibility: Yes

• Recommended Use: Road cycling

Build Quality

The Shimano BB-R9100 features anodized aluminium bearing cups and carbon fibre reinforced plastic construction for superior stiffness and minimal weight. Its high-quality bearings and advanced seal design reduce friction and protect against dirt and moisture, ensuring long-lasting smooth rotation and consistent power transfer under all riding conditions.

Why Choose This Product

• Optimized Performance: Designed for seamless integration with Dura-Ace R9100 cranksets

• Durable Construction: High-quality materials resist wear and extend lifespan

• Smooth Pedaling: Lightweight bearings and advanced seals minimize friction

• High Stiffness: Hollowtech II technology ensures efficient power transfer

• Precision Engineering: Threaded BSA design for secure and accurate fit

In the Box

• Shimano BB-R9100 Dura-Ace Bottom Bracket (Threaded 68mm)

• Bearing Cups

• Installation Instructions