Wolf Tooth Components Elliptical Direct Mount Race Face Boost 30T 9-12Speed Aluminum ChainringThe Wolf Tooth DM CINCH Drop Stop A Oval Boost Ring features the PowerTrac Elliptical design for better traction and a more even pedal stroke. This CNC machined ring provides the mechanical advantages of an oval shape without the aggressive timing found in other models. Built in the USA from 7075 T6 aluminum, this ring uses a Drop Stop tooth design to prevent chain drop and enhance mud clearance. It offers a 49mm chainline for optimized performance on