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Shimano BB-ES300 68mm Shell Octalink Bottom Bracket - English Thread

£15.99
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Details
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Questions & Answers (4) Q & A
Details
- Splined bottom bracket for use with Shimano Octalink chainsets.
- Oversize BB spindle - large 22mm diameter hollow cold forged chrome-moly pipe billet spindle reduces weight, increases strength & rigidity.
- Octalink splined axle/crank arm interface - results in more rigid crank assembly compared to square tapered spindle.
- Sealed cartridge assembly with oversize ball bearings - maintenance-free high efficiency rubber seals keep out dirt, mud & water.
- Cartridge design allows easy installation without adjustment.
Specification
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Questions & Answers (4)
Shimano Octalink triple chainset FCM540
By
23 Oct 2018
Hello
I wish to fit a Shimano Octalink triple chainset FCM540 to a 68mm shell, which length BB would you recommend? Currently I have a square taper BB 68x122.5mm.
Thanks
depends on your chain line, if that's 47.5mm then 113mm, if it's 50mm then 118mm, our part # 38571 has both of those as options. RT 24/10/18
spindle length
By
19 Jul 2018
I have a Cannondale M400 (1997) with a 68mm bottom bracket shell (that much I can figure out).
The cranks are Shimano XT M750 Octalink.
Foolishly I threw away the old bottom bracket before purchasing a new one.....
But in my defence, I didn't realise there would be a bewildering array of sizes - surely the cranks are always the same distance from the bike????
Anyway, with the combination described above, would you be able to tell me which spindle length I need.
68 x ???
Very many thanks - appreciate it.
Hi there,

It would depend how many chainrings you are using. Your best bet is to measure the width of your chainrings and find which one will fit more suitably in to the crank arm.

Thanks.

Bb
By
08 Sep 2017
I am currently using this bb. could you please recommend a smoother and lighter bb of the same specification
Hi,

The Deore LX ES51 bottom bracket would be the next model up so will be smoother, but as more of the construction is made from metal it is unlikely to be lighter. Unfortunately these re the only two options still being made of this type.

Thanks.
Which Es300 Spindle Length For Fc2403 8 Speed Triple Chainset?
By
08 Dec 2015
Hi, I'd like to replace the existing chainset on my bike with the combination above.

Is there a recommended spindle length for the setup, or will I need to check my existing (square taper) setup and replace like for like?

Best

Colin
Hi,

The recommended length for the bottom bracket when used with this triple chainset would be 121mm.

Thanks.