The NSB narrow-wide chainring uses a variable tooth thickness mated with a standard chainring tooth profile to help retain the chain on the front ring during all types of riding. The tooth profile maintains excellent wear for a durable product and has an optimized chainline for 1x systems.
These chainrings are specifically made for Shimano XTR Race M985 cranksets.
Added a 34 tooth ring to create a new 1-by set up for my son’s RMB MTB rig. Very happy with the quality of the machining and the excellent service and fast shipping.
A++. Thanks!