Wolf Tooth Direct Mount Mountain Bike Chain RingThis high-quality chainring is perfect for fast and rowdy MTB use as it delivers powerful torque performance as you blast across the mountains. It features a rock-solid aluminium construction which makes it exceptional at handling the increased pressure which comes with all-day epics and off-road adventures. Developed or use with your SRAM crankset which has SDM fitment, this fantastic component replaces your existing upper spider and chainring with one lightweight component.Features: Material: 7075-T6 Aluminium Use: Mountain Bike (MTB) and Road Mount: Direct Mount Compatibility: SRAM cranksets with SDM fitment Weight: 65g (32T); 90g (38T) and 111g (42T)Compatibility Information:These direct mount chainrings will replace your existing chainring and spider or replace the direct mount ring on SRAM cranksets including the DUB cranks. The ring is attached via 3 bolts on the back side of the spider near the spindle. Note that the SRAM 12spd Red and Force AXS use a different 8 bolt mounting interface that is not compatible with these chainrings.Wolf Tooth’s patented Drop-Stop wide/narrow tooth profile for the ultimate chain retention and mud shedding ability.Chain Compatibility:- All 9, 10, 11 speed chains as well as 12 speed SRAM Eagle, Campagnolo, KMC and SRAM Flat Top AXS chains - They do not work with Shimano 12 speed Hyperglide+ chains.- Shimano 12-speed chains require the use of our Shimano 12-speed specific chainrings.- If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention.Buy Wolf Tooth Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.