They do look very similar. Same sort of shape arms and machining around the spider.
Maybe @Howard would know?
Original SI crank or the new forged version with the ano stripped off. Bet would be on the former.
Despite being a bb30 crank you can fit these to BSA MTBs with the tandem axle and a 30mm outboard BB.
@Howard started
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They do look very similar. Same sort of shape arms and machining around the spider.
Maybe @Howard would know?