Kogel Kolossos Derailleur Pulley Wheel OSPW Oversized Ceramic Bearing - gold, Shimano R8000

Kogel Kolossos Derailleur Pulley Wheel OSPW Oversized Ceramic Bearing 82g for R9100/9150 and R8000 SS/R8050 SS/11 Speed KOGEL Kolosos pulley cage for R9100 R9150 R8000 R8050 (SS/GS) and Sram Red ForceeTap AXS 12 speed, Kogel cages with oversized pulley wheels have proven to be a real advantage on road bikes, and with their exceptional stiffness and pyramid design they improve shifting efficiency and precision. The Kogel Kolossos is Handmade with a 7075 aluminum cage and sheaves to improve the resistance of the set, compared to the usual plastic of these elements, and its Kogel ABEC 5 hybrid bearings. with silicon nitride ceramic balls they reduce friction, saving up to 2.5 normalized watts. Features: Large derailleur sheaves cause less chain sag and slower bearing rotations. Less friction and more efficient power transfer between the legs and the wheels. Kolossos is 3 times stiffer than the main competitor product and 2 times stiffer compared to the original sheave cage on your derailleur. Built to offer low friction while maintaining shifting precision. Designed with a long tooth profile on the lower pulley for better chain retention. Lower pulley with 19 teeth and upper pulley with 12 teeth Compatibility: with Shimano Dura-Ace 9100 and Ultegra R8000 rear derailleurs, includes both mechanical and Di2 models with short (SS) or medium (GS) cages.