Ceramicspeed Ospw Aero Shimano Dura Ace 9100/Ultegra 8000 Pulley Wheel

• Offers a significant improvement in gear shift performance for faster, smoother shifts.
• High-performance ceramic bearings achieve less friction in their transmission.
• They have 3 to 5 times more longevity.
• Easy to maintain.
• Made of high-quality materials.

Is it still possible to perfect the rear shift cage system already faster? Ceramicspeed asked himself this question and worked on a solution together with Drag2Zeros aerodynamics experts. And he says, It workAn almost closed cage encloses the jockey wheels and guide plates and ensures that air can flow unhindered. In addition, braking turbulence is avoided. Numerous tests in the wind tunnel showed that air resistance could be reduced by up to 60% compared to conventional rear derailleurs.