Features super light shift action mounting high clamp product features use: mtb, trekking group: altus model: fd-m2000-ds6 mounting: high clamp multi-clamp: 34.9mm (28.6mm / 31.8mm w / adapter) cable route type: dual pull gear front: 3-speed gear rear: 9-speed top gear teeth: 40t total capacity: 18t compatible chain: hg 9-speed chain stay angle: 66-69° chain line: 50mm material aluminum steel s...