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 18-tooth lower pulley wheel
• Aluminum pulley wheels have a narrow-wide profile that ensures chain retention
• The robust cage is crafted from polyamide and carbon fiber for durability and light weight
• The cage design allows you to choose between two spring tension settings to customize performance and reduce chain drag