Wolf Tooth Elliptical Direct Mount Chainring - 30t SRAM 8-Bolt DM 3mm Offset Drop-Stop ST Requires HG+ Chain BLK CheckoutSpec= Fits 180mm Front and 160mm Rear Rotors Model Trainer Thru-Axle Description 12x180mm J212376

Wolf Tooth Elliptical Direct Mount Chainring 30t SRAM 8 Bolt DM 3mm Offset Drop Stop ST Requires HG+ Chain BLK CheckoutSpec= Fits 180mm Front and 160mm Rear Rotors Model Trainer Thru Axle Description 12x180mm J212376 Model Trainer Thru Axle Description 12x180mm Rear Axle Axle Length (mm) 180 Thread Pitch M12x1 The slim design allows the Q factor of a normal bike Wolf Tooth PowerTrac Elliptical direct mount rings use their proprietary PowerTrac design that has all the benefits of oval but without the funky uneven pedal stroke These chainrings are designed for SRAM cranks with 8 bolt mounting and are specifically optimized for use with Shimano Hyperglide+ 12 speed chains and drivetrains