SRAM Red Front Derailleur (B&-On) 2011: SRAMs Red Front Derailleur takes precision shifting to its limits, offering the smoothest up- & downshifting. Bolstered by a NEW hardened titanium cage, shifting & trimming are fast, easy, & smooth as silk across the entire range for both traditional & compact ring sets. Technology:SRAM Actuation Speeds: Double Front Chainring Fitment:B&-On Weight:72g
Material: Aluminium/ Hardened Titanium cage Compatability:50/34, 50/36, 53/39, Max 16T difference