Shimano TX800 Top Swing Front Derailleur TripleThe Shimano TX800 Top Swing Front Derailleur is compatible with 3x8 speed drivetrains. Hyperglide Technology allows your shifting to be smoother and more precise than ever before! Preassembled for quick assembly. Compatible with 50mm chains and with 42T/48T FD-TX800-TS3/TS6.689228610804