NEW Shimano Altus RD-M310 7/8-Speed Long Cage Rear Derailleur Black outofstock SIZING: Salsa recommends the following

SIZING: Salsa recommends the following sizes based on rider height

Center Lock disc hub

EXP Series Front Pouch

ramped center knobs

CX or road bike

NEW Shimano Altus RD-M310 7/8-Speed Long Cage Rear Derailleur Black outofstock SIZING: Salsa recommends the followingThe 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 Cage Length Long Chain Wrap Capacity (teeth) 43 Drivetrain Speeds 7, 8 Largest Cog 34 Rear Der Shifter Compatibility