Shimano SLX M661 Front Derailleur
The Shimano FD-M661 SLX front derailleur is optimized to be used with Shimano 9 speed components. It is a bottom swing dual pull design with the cage being shaped to perfectly match with 9-speed triple crank sets.
$13 for a front derailleur!? YES PLEASE! What's there to really say? It works, the end. Something as small as this doesn't add much weight and as long as it keeps functioning I have no complaints. Shimano has perfected this kind of stuff and this is super easy to install and set up.