The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.

• The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.
• Features a 14-tooth upper pulley wheel and a 8-tooth lower pulley wheel to provide absolute optimization of the rear derailleur
• Robust cage crafted from polyamide and carbon fiber for durability and light weight
• Compact cage design allows the use of the same length chain as stock pulleys
• Two spring tension settings allow customized setup based on ride conditions