Ceramic Speed

OSPW RS Alpha Pulley Wheel System for Shimano 105 7150 - ALPHA Aluminum Pulley, Carbon Cage

The CeramicSpeed OSPW RS Alpha Pulley Wheel System for Shimano 105 R7150 brings refined performance and cutting-edge design to riders who demand more from their drivetrain. Built around CeramicSpeed’s proven low-friction bearing technology, this system delivers a smoother, faster, and more efficient ride while adding a sleek, modern aesthetic that complements today’s top-tier bikes and components.

The reinforced carbon cage increases strength and longevity without adding unnecessary weight, while the advanced Alpha Aluminum Pulley Wheels use a narrow-wide tooth profile to improve chain control and reduce debris buildup. Four adjustable spring tension settings let riders fine-tune shifting performance for specific conditions or preferences, ensuring optimal drivetrain response on every ride.

• 4 spring tension settings allow precise customization for different riding styles and conditions
• Alpha disc pulleys feature a narrow-wide profile that sheds debris and maintains smooth chain engagement
• Compatible with Shimano 105 R7150 12-speed rear derailleurs
• Grade 3 Silicon Nitride bearings run up to 400% smoother and 58% lighter than standard steel bearings
• Injection-molded carbon fiber reinforced PA cage increases stiffness and durability while keeping weight low
• 13-tooth upper and 19-tooth lower Alpha pulleys include ADR (Active Debris Remover) bearing protection to extend bearing life

For riders looking to maximize drivetrain efficiency, durability, and aesthetics, the CeramicSpeed OSPW RS Alpha System sets a new benchmark in performance-driven design.