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@broken_77
it depends on the cranks...my guess is if you have a dura ace track's which use 109,5 BB for dura ace hubs which are for 42 chainline then goldtec is 45mm so it means plus 2 or three milimeters on both sides of axle which leaves you with 114/115/116mm axle length....also depends on the sprocket but that should be just one mil or so........
and non-track cranks are just one big guess i suppose......but you have a bit of an adjustment cuz you can put the chainring on the other side of the spider...