The Miche Xpress Chainset is the entry level track model._x000D__x000D_
Using a lightweight forged alloy for the arms, bolted to Ergal 7075 4mm alloy chainrings gives a sub 600g chainset. The axle profile is compatible with JIS squared bottom bracket with a 68mm shell width and with an axle length of 107mm._x000D_
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* Arms: 135 BCD Aluminium, CNC, Forged, 170mm_x000D_
* BB: JIS 107mm(not included)_x000D_
* Rings: Aluminium, CNC, 48t_x000D_
* Weight: 577g (46t 170mm)
