S=252mm, M=264mm, L=278mm Middle wheel split: 112mm - and see why team Iqon and industry experts alike are raving about the AG60c.

Important
As it has been noted in review videos the middle wheels are very difficult to attach. The issue is related to getting the bearing spacer in the correct position so that the axle goes through. We advise you to be patient and understand that the frame is not faulty, just a little tight to setup in the first instance. 

It should also be noted that the metal inserts to adjust the colour of the logo need to be either be used in full (2 per frame wall or 4 per frame) or none used at all. Using only half of the provided inserts will result in them rattling.