Shimano Dura-Ace BB-R9100 Bottom Bracket – Hollowtech II – BSA 68mm

Shimano Dura-Ace BB-R9100 Bottom Bracket – Hollowtech II – BSA 68mm

THESE ARE OEM SHIMANO PARTS, BRAND NEW, NEVER INSTALLED ON BIKE, NEVER USED IN ANY WAY, JUST NOT IN RETAIL PACKAGING.

The Shimano Dura-Ace BB-R9100 bottom bracket is engineered for maximum efficiency, durability, and smooth pedaling performance. Designed for Hollowtech II road cranksets, this premium bottom bracket offers reduced friction, improved sealing, and long-lasting rotational smoothness — ideal for riders seeking top-tier Dura-Ace performance.

Key Features

• Premium Dura-Ace Quality – Engineered for top-level smoothness and durability.

• Hollowtech II System – Wide bearing placement for maximum stiffness and efficient power transfer.

• Advanced Sealing – Superior dirt and water resistance extends bearing life.

• Reduced Friction – Smoother rotation for improved pedaling efficiency.

• Lightweight Construction – Optimized materials without compromising strength.

Specifications

• Model: Shimano BB-R9100

• Series: Dura-Ace R9100

• Shell Type: BSA / English Threaded

• Shell Width: 68mm (Road Standard)

• Spindle Interface: Hollowtech II

• Bearing Type: High-grade sealed bearings

• Compatibility:

  • Dura-Ace R9100 / R9200

  • Ultegra R8000 / R8100

  • 105 R7000 / R7100

  • Any Shimano road Hollowtech II 24mm spindle crankset

What’s Included

• 1 × Shimano Dura-Ace BB-R9100 Bottom Bracket (BSA 68mm)

• All OEM small parts included (no retail box)

Why Choose BB-R9100?

This is Shimano’s top-tier threaded bottom bracket — lightweight, ultra-smooth, and built to withstand heavy training and racing conditions. A perfect upgrade to maximize drivetrain efficiency.