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Shimano Altus RD M310 Rear Derailleur 78 Speed Long Cage Silver MFPN=100001825 8 Defined Color Black ISO Inner Ring Compatibility:32T 8 Defined Color Black ISO Width (mm) 41 ISO Diameter 406 20" BMX Tire Intended Use BMX Tire Diameter 20" Tire Bead Folding Labeled Size 20 x 1 Round Chainrings for SRAM 8 Bolt Oversized 15 tooth tensioner and 13 tooth guide pulleys reduce noise and wear 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 Drivetrain Speeds 8 Weight 326 Chain Wrap Capacity (teeth) 43 Cage Length Long
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