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Does anyone happen to know the diameter of a 531 top tube?
Standard size is 1" (25.4mm)
Seat tube and down tube are both 1.125"/28.6mm, head tube 1.25"/31.8mm. Main tube walls are under 1mm everywhere except the steerer.
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Just measured mine and the top tube is 25.4mm, where as the seat tube is 28.6mm.
I've got a pair of silver, 25.4mm Genetic cable guides, BNIP from an aborted build.
With postage, two will cost you £7.38 from Wiggle: so £6?
gbj_tester
Scilly.Suffolk
@Tijmen
Does anyone happen to know the diameter of a 531 top tube? I want to order these soon-ish but don't have the frame handy. My guess is 31.8, ~27mm seatpost and ~2mm wall thickness sounds about right? Or is the top-tube a different diameter than the seat-tube?