Any code on the black seals?
I've just grabbed the bottom bracket, now these are an odd build...
It's a RaceFace Signature Ti and uses double row angular contact bearings, well it says so on the sleeve.
Everything I had read says it's the MR2231 bearings @7mm wide
But I've just noticed this has 3804 2RS MAX RF.
I know they are not the original bearings and from the specs the ID is 0.5mm narrower and the width is like you first bearing.
I got it of ebay and it had been rebuilt and re-spaced for some single speed purpose (one of the external silver spacers has been cut down and also placed on the inside :s)
Both bearings are listed on Enduro's website the 'RF' part seems important.
http://www.endurobearings.com/products/ ... rings.html
Once I decide I'll give Betd a message.
ISIS is all new to me, just thought I'd loose some weight getting Ti, but with what looks like custom bearings, they aint cheap