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Description
Experience the world’s fastest oversized pulley wheel system, now engineered for SRAM Rival 1x and Force 1x 11-speed derailleurs with Type 3 clutch and cage lock at the 8 o’clock position. The CeramicSpeed OSPWX Sram 1x System features an advanced 14-tooth upper and 18-tooth lower narrow-wide pulley design for unmatched chain retention and drivetrain efficiency—ideal for gravel, cyclocross, and adventure riding.
The OSPW X System is built around a custom-engineered, lightweight carbon fibre cage for maximum stiffness and low weight. The cage offers adjustable spring tension settings—low and high—allowing you to fine-tune performance to your terrain. We recommend the low tension setting for reduced chain drag while maintaining full clutch functionality. For extreme terrain where shifting performance is affected, the high-tension setting restores factory spring force.
Tested to reduce friction by 30–40% compared to stock pulley systems, the OSPW X delivers unmatched drivetrain efficiency and power transfer. Hand-built in Denmark with precision CeramicSpeed Bearings, the system lasts 3–5 times longer than standard alternatives.
Upgrade your SRAM 1x drivetrain with the ultimate pulley system engineered for speed, strength, and smooth performance.
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Important Update for Our Canadian Customers
We regret to inform you that shopping on Sigma Sports is temporarily unavailable for customers based in Canada.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our Canadian community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team