The mavic r sys clincher wheelset is the lightest alloy clincher wheelset with a wider deeper rim the r sys wheelset is constructed with tracomp superlight carbon fibre spokes to provide high lateral stiffness for increased energy transfer yksion pro griplink tyres combined with a rounder rim profile ensures accurate cornering and easier handling features mavic r sys is the lightest alloy clincher wheelset new ism 4d exalith 2 rims taller rim profile for unbeatable lateral stiffness