The rrp on these was silly, over £100 iirc. I bought it for a project but that's long gone now and I've no isis cranks left. £30 posted. Its new, still in the case and has all the bolts etc, even special grease and stickers.
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ISIS overdrive was an earlier attempt at something like the current T47 shell. It's a threaded BB shell, but way oversized to use more durable/larger bearings.
I have never seen a frame that actually used the standard in the wild, just didn't catch on.
SKF used to make an ISIS BB that was effin' brilliant. I'm not sure where you'd get one in Europe anymore but a little US shop guaranteed those they sold for life! The bearings went, they'd send you another!
Not sure if they still have any, or who they were, but I think it cost about $100. Not cheap, but they do last a long, long time...
And they're red...
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