Our Cannondale Gemini SRS guide mount plate is designed to fit the Gemini frame's unique layout and positioning needs. This plate is stock equipment on all Gemini DH bikes, and has been raced to numerous World Cup and Norba podium finishes by Cedric Gracia, Robin Baloochi, Aaron Chase, and Leana Gerrard. If you own a Gemini frame and are looking for the perfect single ring chainguide setup, this is it! No other chainguide will mount up to your Gemini frame as easily or perfectly.