The Oversized Pulley Wheel System (OSPW) from CeramicSpeed is probably the most sophisticated way to optimize performance. Oversized pulley wheels with 15 teeth at the top and a massive 19 teeth at the bottom greatly minimize the movement of the chain links as they pass through the cage, significantly reducing friction and effort. Additionally, the system’s service life is considerably extended compared to other commercially available solutions.

The RS version introduces a modern, angular bearing cage design that fits contemporary bicycle and groupset trends. It is made from high-quality carbon fibers reinforced with polyamide, distributing forces efficiently, increasing stiffness, and improving shifting precision while resisting minor impacts. To highlight your affiliation with the CeramicSpeed TEAM, the cage features striking TEAM lettering.

The most notable and technically interesting innovation is the pulleys. Teeth mounted on an aluminum disc are made of a durable, fiber-reinforced composite, ensuring quiet and smooth chain operation. The Active Debris Remover (ADR) system prevents contamination in the bearing area. The closed design also prevents twigs or debris from entering the pulleys.

CeramicSpeed hybrid ceramic/stainless steel SpeedBalls are 15% harder than competitors, absorb higher loads, and have an ultra-smooth surface, minimizing rolling resistance and increasing the cage’s service life sixfold.

Maintenance: use the included oil and maintain regularly for optimal performance.

Important notes: remove the complete rear derailleur during transport. CeramicSpeed provides a lifetime guarantee on the OSPW system.

Technical data:

• Application: Road bike

• Cage material: Carbon, polyamide

• Bearing material: Ceramic, stainless steel

• Roller material: Teeth: Composite | Disc: Aluminum

• Number of teeth top/bottom: 15/19

• Rear derailleur compatibility: SRAM Red AXS / Force AXS

• Chain compatibility: 12-speed

• Largest cassette sprocket: 36

• Cage color: Black with white TEAM print

• Roller color: Silver with black teeth

• Weight (manufacturer): 101 g

• Weight (measured): 105 g