- Smooth and durable sealed cartridge design
- Compatible with Shimano Hollowtech II cranksets
- Lightweight construction for improved performance
- Easy installation with press-fit design
- Designed for 42mm frame shell width
The Shimano BB91 Press Fit Bottom Bracket 42mm is engineered for mountain biking enthusiasts seeking a reliable and efficient performance upgrade. This bottom bracket features a smooth and durable sealed cartridge design that ensures longevity and minimal maintenance. It is specifically compatible with Shimano Hollowtech II cranksets, making it an ideal choice for enhancing your bike's drivetrain. With its lightweight construction and easy press-fit installation, the BB91 is designed to fit seamlessly into 42mm frame shell widths, providing a perfect balance of strength and performance on the trails.

In this rapidly changing world, everyone is seeking a healthier and more enriched lifestyle. While it is important to accept changes proactively, we must also adhere to something basic, and something unchangeable, upon which we should create new value. Shimano hopes to help realize such a wonderful lifestyle by offering bicycle components, fishing tackle, and rowing equipment.
Taking advantage of original technologies and a wealth of experience accumulated throughout Shimano’s long history, they develop innovative products that go beyond the expectations of cyclists, anglers, and rowers. Shimano believe that their Captivating Products should feature not only exceptional quality and performance, but also a fascinating design that appeals to respective users’ sensitivities at first touch.
Click & Collect Available
• In-stock items usually ready in 4 hours* • Online Only items usually ready in 1-3 working days More info »
Courier Delivery Available
• $9.99 for orders $99 & under • Free for orders over $99 • Bulky shipping fees apply for bikes & bulky items based on item weight More info »