Nova Ride Ceramic 14T MTB Pulleys This product is dedicated to the MTB product range! Very easy to assemble and fits with many references Compatibility example: Compatible with groupsets that have 13 and 14 tooth pulleys - Shimano XT / XTR / SLX - Etram Eagles, Apex, XX1 Designed by our French engineers, these NOVA ceramic pulleys per gearbox improve the fluidity of the transmission, improve efficiency to satisfy the most demanding. Made of the highest quality materials: 7075 aluminum and ceramic bearings. These options allow you to upgrade your front derailleur with a more affordable price Two oversized aluminum wheels, which coupled with ceramic bearings reduce the chain wrap angle with minimal friction. Features: Weight: 15g per pulley Watts saved: 3W International shipping.