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Dolan preffisio front mech

SpecializedJakeSpecializedJake Posts: 34
edited November 2017 in Workshop
Looking at buying a preffisio from Dolan to replace my aging specialized tricross winter frame. Planning on swapping my full 105 5700 groupset onto the new frame but I'm a little unsure about fitting the front mech. The mech I currently have is a 31.8mm band on however dolan list the frame as having a front mech clamp size of 31.9mm. Can anyone confirm if my band on mech will bolt straight on or will I have to purchase a front mech adaptor and new braze on front mech ?
2018 On One Proto
2013 Haro Pro XL BMX
2017 Planet X London Road


  • Down tubes are rated between 31.7 and 31.9 mm, your front mech band is designed to work with a much broader range than that, so you will be absolutely fine.

    If you think about it, 0.1 mm in 31.8 is roughly 0.3% tolerance... we are in the same ballpark as the tolerance required for a jet engine gas turbine... :-)
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