The X9 front derailleur was designed specifically for SRAM X-GLIDE™ shifting. Flawless shifting means you’ll never again compromise your speed and power in unpredictable off-road terrain. No more missed shifts, ever. X-GLIDE™ puts you in he right gear, right now.
Direct-mount options are chainring size/combination specific and available in three versions: S1 for 42.7mm (2-bolt), S3 for 22.1mm (2-bolt), or H0 (1-bolt + anti-rotation slot)
Direct Mount derailleur features a single attaching bolt and a grove on its back to keep it aligned with the frame mount.
Top pull derailleurs refer to the cable being pulled from the top. If your cable routing follows the top tube and then drops down to the front derailleur, it’s a top pull.
Bottom pull derailleurs – wait for it – refer to cable being pulled from the bottom. If your cable routing follows the down tube and then takes the cable past the bottom bracket, it’s a bottom pull.