SRAM X9 2x10 DM-S3 Front Derailleur (26/39t) from BikeBling.com
Sram XO Front Derailleur 2x10 Top Pull S3 39T OB – Rock N' Road
Amazon.com : SRAM Red 22 50T 110mm BCD YAW Chainring Gray for Hidden or Non-Hidden Bolt Use with 34T : Bike Chainrings And Accessories : Sports & Outdoors