Performance Bike
Shimano Tourney RD-TY300 Rear Derailleur (Black) (6/7 Speed) (Long Cage) (BMX/Track Frame Hanger) (S
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From Performance Bike
Shimano Tourney RD-TY300, RD-TZ50 Rear Derailleurs Features: TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage Specs: Rear Derailleur Mount TypeDropout Claw Hanger Cage LengthLong Largest Cog34 ColorBlack Rear Der/Shifter CompatibilityShimano Mountain keyword searchrd-tz31