Shimano's SLX 10-speed Front Derailleur sports a lightweight aluminum cage that's chrome plated to reduce wear. The dual-pull design allows this derailleur to be used with top- or bottom-pull cable routing. It's a top-swing E-type derailleur that works with 38-40-tooth chain rings. Plus, the body boasts wide parallel pivots that provide fast, smooth and reliable shifts every time.
Bottom-pull derailleurs are used when the cable is routed underneath the bottom bracket and up through the cable clamp. Top-pull derailleurs work with frames where the cables are routed down from the top tube.