• Shimano BB91 MTB Press Fit Bottom Bracket

        • $21.99 21.99
        • RRP $26.99
        • Save 19%
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      42mm Cup
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Shimano BB91 MTB Press Fit Bottom Bracket

Complete press-fit bottom bracket assembly for Shimano HollowTech II MTB cranks, for use with Specialized frames with a 84.5mm bottom bracket shell width.


  • Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
  • Set includes left and right hand cups
  • Frame Shell Width: 84.5mm
  • Cup Outer Diameter: 42mm
  • Compatibility: Specialized frame specific

A 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).

Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Delivery cost $9.99
  • Delivery toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


  • Colour: Black
  • Size: 84.5mm
  • Option: 42mm Cup

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Bottom Brackets Buying Guide

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