The renthal 1xr chainring tooth profiling ensures the highest level of chain retention in all conditionsalternating 18 35mm width teeth interlock with the chain for ultimate security with no loss of efficiencythe reduced frontal profile of the 35mm wide teeth increases mud clearance for the inner chain plates and extends longevitydurability of the hard wearing 7075 t6 aluminium construction is maximised with a hard anodised surface treatment and mud evacuation grooves in the tooth b