you can choose any of their Switch rings regardless of chainline

372g per pair

but never fear

The larger end fits the 6-splines of the 9mm OD of the threaded eyelets of the "FORE drilled rim adapters" found on rims such as the Mavic XM819

Hope AM-Freeride 31.8mm Bar Clamp Stem - Purple - 31.8mm - 50mm x 0 Degree - 1 1-8th Inch Back in Stock you can choose any ofThe Hope AM Freeride 31. 8mm Bar Clamp Stem is CNC machined from a solid billet of 2014 T6 aluminium for strength and durability. The stem has more material taken out to save weight, a new front plate design, opposing steerer clamp bolts and a four bolt front handlebar clamp for more rigidity. Specifications: Colour Black. Weight 135g. Length 50mm. Bar Clamp Diameter 31. 8mm. Stem Angle 0. S. H. I. S. Stem Clamp Diameter 28. 6mm.