This is a Shimano XTR triple front derailleur FD-M900 bottom pull with a 28.6 clamp on set up. It will handle a 9-11 speed rear cluster with ease. I had this guy on a road bike with a triple up front

For 1982 Shimano released the Shimano Positron FH derailleur, in many ways the definitive Positron derailleur. On the face of it the Positron FH was simply a Positron II - except adapted for six speeds, with longer parallelogram plates and with six notches instead of five. When engaged, this switch helps to eliminate chain slap and dropped chains by increasing spring tension. This is a valuable option for suspension systems that require chainstays and pivots located close to the rear derailleur. The RD-M8000 retains all the last models improvements, including the direct cable path. Shimano Ultegra 6800 front derailleur tension problem. Is the front derailleur on straight and at the right height? Set the limits all the way out and check again with the bike on a stand. Cant get my rear derailleur to reach all cogs. 3. SRAM Rival front derailleur throws chain to the Ive put a 46T big ring on my bike and with the FD at its lowest position it still leaves a gap of around 6-7mm above the teeth on the big ring as compared to the 1-3 mm recommended by Shimano but Shimano Ultegra 8050 Di2 Medium Cage Rear Derailleur . $274.99 Be the first Write a Review ? Shimano Shimano Ultegra 8050 Di2 Medium Cage Rear Derailleur . Rating The new low-profile design of Shimano Shadow RD increases its shift stability and gives the rear derailleur a sleek and Sram X-0 Rear Derailleur 9 Speed Mountain Bike Rear Derailleur 10 Speed Shimano Xtr Rd-M952 Rear Derailleur Road Bike Rear Derailleur 9 Speed Ace 7800 10 Speed Rear Derailleur 10 Speed Shadow Shimano Xtr Rd-M952 10 Speed Rear Derailleur Medium Cage Shimano Dura Ace Rd-7700 Rd-7800 Rear Derailleur Rear Derailleur Rd-7700 7 Speed Short Cage Free Shipping (USA orders only) Free shipping on orders over $75.00.* Oversize items