Shimano Sora RD-R3000-GS Rear Derailleur - 9 Speed Medium Cage Black MFPN=21053 The Overdrive delivers super tough

The Overdrive delivers super tough reliability that is perfect for city riding and commuting

The Box One version feature a supple 120 tpi casing with skin walls and high silica compound that boosts performance and lowers weight

UTC Rubber Compound

5" Disc Slate/Stealth 32H Front

OEKO-TEX® 100 certification means that the main fabric poses no harm to human health

Shimano Sora RD-R3000-GS Rear Derailleur - 9 Speed Medium Cage Black MFPN=21053 The Overdrive delivers super toughShimano Sora RD R3000 Rear DerailleursCompatible with Shimano 9 Speed STI levers Fluoric coated link bushings Aluminum bracket body Painted finish Stainless steel B axle Largest Cog 34 Color Black Rear Der Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 9 Chain Wrap Capacity (teeth) 43 Cage Length Medium