Shimano Sora R3000 9 Speed Rear DerailleurShimano Sora R3000 9 Speed Rear Derailleur With its durability and affordability, the Sora R3000 9 Speed Rear Mech is the perfect choice for road or urban commuting bikes. Now with technology adopted from higher level rear mechs, both beginners and enthusiasts will feel comfortable with the features that 9 speed Sora R3000 introduces. Wide link design for increased rigidity and precise gear shifts 11 tooth pulleys for reduced pulley wear and chain