CeramicSpeed OSPW Aero ALPHA Shimano 9250/8150

The CeramicSpeed OSPW Aero ALPHA Shimano 9250/8150 is the next evolution in oversized pulley wheel systems, engineered to deliver maximum drivetrain efficiency and aerodynamic gains. Designed specifically for Shimano Dura-Ace 9250 and Ultegra 8150 12-speed derailleurs, it reduces friction, enhances shifting performance, and improves aerodynamics.

Developed in partnership with aerodynamic specialists, the ALPHA edition integrates a carbon-reinforced cage with optimized shaping to minimize drag. It features a 13-tooth upper and 19-tooth lower pulley wheel configuration, CeramicSpeed’s premium coated bearings, and a modular ALPHA cage design for unmatched performance and durability.

Handcrafted in Denmark and tested at the highest levels of racing, the OSPW Aero ALPHA system is trusted by WorldTour professionals seeking every competitive advantage.

CeramicSpeed OSPW Aero ALPHA Shimano 9250/8150 — Specs at a Glance

• Compatibility: Shimano Dura-Ace R9250 & Ultegra R8150 12-speed derailleurs
• Pulley configuration: 13-tooth upper / 19-tooth lower
• Cage design: Aerodynamic ALPHA cage with carbon-reinforced construction
• Bearings: CeramicSpeed coated bearings for ultra-low friction
• Material: Carbon composite cage with alloy pulley wheels
• Finish: Matte black aero profile with precision detailing
• Efficiency gains: Up to 40% reduction in drivetrain friction compared to stock setups
• Origin: Handbuilt in Denmark

Design Benefits

1. Aerodynamic advantage: Sculpted ALPHA cage minimizes drag for improved speed and efficiency.
2. Reduced friction: Oversized pulley wheels and premium ceramic bearings enhance drivetrain efficiency.
3. Race-proven durability: Carbon-reinforced cage withstands high wattage and demanding conditions.
4. Precise shifting: Optimized pulley alignment ensures crisp and reliable gear changes.
5. Handcrafted quality: Built to exacting standards in Denmark for pro-level performance.

Final Take

The CeramicSpeed OSPW Aero ALPHA Shimano 9250/8150 is the ultimate upgrade for riders chasing maximum efficiency and aerodynamic performance. With oversized pulleys, coated bearings, and a wind-cheating cage design, it delivers measurable speed gains and smooth performance at the highest level of cycling.