Bottom bracket identification

mikelskas

Hi guys,

Please could someone point me int he right direction with regards to this bottom bracket I need to replace.
It came from an old Boardman single speed that looks just like this one below. I have tried looking up the bike spec on Bikepedia but cannot find it.








1

timothyw

If you could do some pictures of the cranks them we could be more certain.

I can tell you the bike has a British threaded bottom bracket fitting. I can't tell if you need a Shimano hollowtech 2 bottom bracket or a SRAM/truvativ gxp one.

If it is a gxp one then it will have a star shaped hole on the non drive side. If it is the Shimano standard the hole on both sides is identical.

mikelskas

Thanks for the reply Tim. Here are some images of the cranks.

imposter2.0

Truvativ crank, so it will need a GXP BB. One of the pics shows the BB has 'GXP' written on it in any case...

mikelskas

Thanks Imposter, so I take it I could replace it with this BB from Amazon. Looks like it is 73/68.
My BB shell measures 68mm so I understand I would need to use the spacers that come with it. The one thing that throws me off this one is the fact that the non-drive side has splines in it. It looks like these fit over the crank axle but Im not familiar with this design.




https://www.amazon.co.uk/SRAM-English-T ... s_sp_1_vtp

timothyw

So it does! Hadn't spotted the GXP on my phone.

£16 is a decent price here: https://www.merlincycles.com/sram-gxp-b ... 45036.html (English 68mm)

You won't need to use the spacers, pretty sure they're only needed for mountain bike chainsets.

keef66

TimothyW wrote:

So it does! Hadn't spotted the GXP on my phone.

£16 is a decent price here: https://www.merlincycles.com/sram-gxp-b ... 45036.html (English 68mm)

You won't need to use the spacers, pretty sure they're only needed for mountain bike chainsets.

That link shows out of stock but this one looks OK...

https://www.merlincycles.com/sram-gxp-b ... 45036.html