I've got a custom build Klein Attitude which is pretty much in perfect condition. It's full XTR with 98 SID's.
I fancy getting out on a hard tail again for the winter and was wondering if I should start to swap out some of the kit with new bits. First up would be a new set of SID World Cups.
Before I start to dismantle this classic I thought I'd ask you guys for an opinion.....should I do it or keep as-is for prosperity sake (and the rise in value of a vintage classic)

