The extra wide pivots of the M971 create a rigid structure that ensures assertive shifting as well as longer pivot life. Using a multi-clamp design as well as an adaptable top or bottom cable pull mount create a once size fits all front derailleurFeatures Wide Link design for best shifting performance New adjust screws position for easier reach for different frame designs Multi-clamp/Multi-pull design Specifications Series XTRModel No. FD-M971Rear Speeds 9Front SIS YesChain Ring Triple/DoubleApplicable Chain Line 50mmTotal Gear Teeth 44TTotal Capacity 22TTop-Middle Min. Capacity 12TDual Pull YesMulti Clamp Band YesChainstay Angle 66 to 69 degrees