These CeramicSpeed Pulley Wheels put less friction between the power transferred from your legs and the rear wheel. Each pulley wheel is fitted with CeramicSpeed high quality bearings that offer for a more efficient drivetrain. Designed to fit all Campagnolo 11-speed derailleurs (mechanical and electrical).
Better than the standard equipment, these pulley wheels are made of aluminum alloy that is extremely lightweight, weighing only 22g (without spacers). Low friction and long lifetime is essential for these pulley wheels.
Coated bearings come with an extremely thin (2-3 microns) protective layer, which is 75% harder than hardened steel. This is applied to the entire raceway, and makes the bearing even more resistant to contamination, as well as further reducing friction.
