Chainrings

absoluteBLACK SpideRing Oval 2x Direct Mount Chainring Sets for Cannondale are incredibly stiff and lightweight. Sold as a set, they are designed for Cannondale Hollowgram cranks, such as SI, SISL, and SISL2. Chainrings have a ramp and recess design to improve shifting performance. Ovality has been optimized for road climbing with timing of 108 -110.5° after TDC (top dead center). - Sold as a 2x chainring set - Oval shape reduces stress on knees, helps to keep your legs fresh, and does not feel any different while riding - Ramp and recess shifting design makes shifting smooth and fast - Small chainring is replaceable - Provides excellent weight-to-strength ratio