Shimano Altus RD-M310 Rear Derailleur - 78 Speed Long Cage Silver CheckoutSpec= Ti - Black/Gold Stroke (mm) 60 Metric Yes

Stroke (mm) 60 Metric Yes Lockout Switch Climb Switch Eyelet Diameter (mm) Trunnion Eyelet Diameter (mm) 15 External Adjustments High Speed Compression Damping External Adjustments Low Speed Compression Damping External Adjustments Rebound Damping Positive Spring Air Eye to eye length (mm) 205

Direct mount design is lighter weight than a spider version

Nestled in the Alpha Disc pulleys is their patent-pending Active Debris Remover (ADR) bearing protective tech feature

DU bushings

Shimano Altus RD-M310 Rear Derailleur - 78 Speed Long Cage Silver CheckoutSpec= Ti - Black/Gold Stroke (mm) 60 Metric YesThe Shimano RDM310 Smart rear derailleur has a Wide Link design for increased rigidity and precise shifting. Oversized 15 tooth tensioner and 13 tooth guide pulleys reduce noise and wear SMART CAGE pulley plate provides more ground clearance Advanced light action with precise shifting Compatible with Shimano HG 6 7 8 speed chains Largest Cog 34 Color Silver Rear Der Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard