The vision metron 81 sl carbon wheelset is full of quality components and features straight pull spokes with 6 sealed cartridge bearings in pra hubs to create a radially and laterally stiff wheelset the deep 81mm full carbon rim has been relentlessly tested in a wind tunnel to reduce air turbulence in straight lines as the air takes longer to hit the spokes whilst passing smoothly over the carbon rim the stiff spokes hubs and deep rim all contribute to a wheelset capable of incredible