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