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Item # SHI0461 15% Off

4 5

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Item # SHI0461

Description

Along with BB86, this Shimano BB92 Bottom Bracket is part of the new pressfit standard. It offers frame designers a little more room for new designs in seat/down tubes and rear suspension layout. Where a typical mountain bike has a 68 or 73mm bottom bracket shell width, a BB92 equipped bike has a shell that measures 91.5mm wide. A BB92 shell lacks internal threads and has a 41mm inside diameter.

This Shimano BB92 Bottom Bracket is made to press right into your bike. It will mate your Shimano HollowTech crankset to any frame equipped with a BB92 bottom bracket shell. This bottom bracket comes with two steel cartridge bearings pressed into composite cups. The cups increase the outside diameter of the assembly to 41mm to match the i.d. of the frame's bottom bracket shell. There is a 1.75mm thick outer lip that provides a positive stop for the cups when you press them into place. Shimano includes their standard plastic o-ringed inner sleeve to protect against water damage should it find a way inside your frame. It uses black plastic dust shields that snap into the inner race of each bearing.

*Note: BB91 and BB92 are identical bottom brackets.

Tech Specs

Material:
[body] composite, [bearings] stainless steel
Shell Width:
91.5 mm
Recommended Use:
spinnin' your HollowTech cranks
Manufacturer Warranty:
2 years
Actual Weight:
One Color, One Size: 76g

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Here's what others have to say...

4 5

Simple and Effective

  • Familiarity: I've put it through the wringer

The PF BB92 bottom bracket is intended for mountain bikes (compared to the PF BB86 made for road bikes). It's super easy to install since it's a press fit. The bearings quality is good, longevity dependent on riding conditions. Wet or sandy conditions will result in shorter bearing life.

Some things to consider: If you're installing in a carbon frame you might want to use carbon specific grease. It will reduce noise found later on down the trail.

Be particularly careful with the inner races during the install, they crack easily if misaligned in your press or if you decide to take action with a hammer.

Pay attention to the instructions regarding how to orient any spacers, your bike design and front derailleur type impact the BB spacing.