This particular chainring will ONLY work with CN-M9100, 8100 & 7100 12spd Hyperglide+ chain due to different thickness & shape of the teeth. Our Premium 1X Oval 96BCD narrow wide chainring is designed for Shimano XT M8000, SLX M7000 and MT700 1x or 2x cranks Only. These chainrings fit Boost and non-boost bikes as correct offset is realized by the crank spider itself, not chainring. Bolts included. Size (Mass +/-1g): 30T (44g), 32T (50g), 34T (60g), 36T (69g) Compatibility Fits Shimano XT M8000, SLX M7000 and MT700 cranksets 1X and 2X only. Boost and non-boost. ONLY Shimano 12spd HG+ chain Material cnc machined 7075 Txxx Aluminum. Long-lasting construction! Type II anodizing Ovality Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending All 4 sizes have built-in standoffs to provide the ideal 1X chainline. IMPORTANT - Use provided bolts to mount the chainring If you wish to check for frame clearance with new oval ring, below you can find measurement of biggest dimension of the oval (tip to tip of tooth): 30T: 134mm ; 32T: 143mm ; 34T: 151mm ADVANTAGES OF OUR SPECIAL OVAL NARROW WIDE CHAINRINGS FOR SHIMANO XT M8000, SLX : *We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape. *Finest design to provide excellent weight to strength ratio *One of a kind special oval shape (Patent Pending) *Greatly improves traction and climbing abilities *Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months! *Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically *Superb quality and great look. *You will ride faster using ovals. If you keep using round ring then others will get quicker. *You will not "feel" the oval shape at all *Reduces stress on knees HOW TO MOUNT ABSOLUTEBLACK XT8000 OVAL NARROW WIDE CHAINRING: There is a small mark (triangle shaped) on the inner circumference of the chainring. This mark Must sit behind the crank arm. Mounting procedure is identical for SLX and XT cranks. Use our provided 1X M8 11mm chainring bolts and Torque them to about 7Nm.