Shimano Dura-Ace SM-BB7900 Bicycle Bottom Bracket

(3 customer reviews) | write a review

$52.48

RRP $58.31

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Option	Stock	Price	Quantity
Silver - British	In Stock	$52.48 RRP $58.31 Save 10%
Silver - Italian	In Stock	$52.48 RRP $58.31 Save 10%

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englishthread

English Thread

Also known as a BSA (or sometimes British) thread, this bottom bracket has a 68mm shell width. It uses a left hand thread on the drive side and a standard thread on the non-drive side.
hollowTechii

t-hollowTechii-title

A Shimano integrated crankset and BB design that has an external bearing system.
italianthread

Italian Thread

A bottom bracket with 70mm shell width. Italian Bottom Bracket shells use a right hand thread on both sides.
shimano

Shimano Compatible

This product is Shimano compatible.

Product Overview

Performance without compromise. Shimano's new Dura Ace 7900 has arrived.

Key Features:

Compatible with the FC 7900 and FC7950 chainsets.
Shell width : 68mm.
Thread Dimensions : 1.37 x 24 TPI.
New look 7900 anodised finish.
Weight : 90g (Manufacturer claimed).

Item Code: 100186

Product Reviews

Customer Reviews

Great BB for the price - on sale) - Review by Ailers

This is a great BB. Its easy to install and runs smooth. I haven't done any maintenance for over a year now and it is still running very smooth. Begs the questions, should I spend half a week salary on a ceramic BB? NO...

(Posted on 27/09/2011)

Really well made - Review by Duncan

Really well made and high quality bearings/races on this do make this a cut above the other Shimano BB's. For value/money proposition this one is hard to beat. Only failing is it comes in one colour!

(Posted on 18/05/2011)

Backwards compatible - Review by Whitney

The new SM-BB7900 is backwards compatible with the Dura-Ace 7800 crankset, as well as new & old versions of Ultegra, 105 & so on.

High build quality & long life span have made this a worry free & reliable part of my drive train. The seals are tight & have resisted the wear & corrosion of numerous rain storms & grimy rides. Although it will eventually wear out, it is unlikely to do so before I decide to upgrade my entire drive train in another four-years. The point is that under reasonable conditions (i.e. relatively few rain storms & not a lot of road salt from winter riding) a well built BB will run smoothly for ten to twenty thousand miles before it begins to drag.

I'm well on my way to 15,000 miles on this one, & have little doubt that I'll roll up to it smoothly.

(Posted on 25/04/2011)