SHIMANO XT M772 M771 M770 Rear Derailleur

M772 (Large picture) 'Shadow' specific: lower profile body with direct cable routing, stronger spring, and redesigned bracket to avoid chainstay contact (aluminum B-attachment with a Top-Normal return spring) M772 Shadow rear derailleurs only designed for 11-32t & 11-34t cassettes

M771 (Smaller picture): Top-Normal (Traditional) return spring: Ideal for RapidFire and SRAM Shimano compatible shifters.

M770: Low-Normal (Rapid-Rise) return spring: Ideal for Shimano DualControl shifter/brake set up.

Wide link parallelogram design increases rigidity and preformance

P-body rubber bumper reduces noise and adds durability (M771/770)

4 flouric coated link pivot bushings minimize friction Aluminum construction with 11 tooth pulleys (sealed bearing tension)

7 - 9 speed compatible.