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The CEMA Schaltrollen Oversized Shimano & SRAM are high-performance oversized derailleur pulley wheels designed to upgrade the efficiency and smoothness of your drivetrain. By using larger-diameter pulley wheels and high-quality bearings, these jockey wheels help reduce friction in the rear derailleur, allowing your chain to run more freely and improving power transfer. Compatible with popular Shimano and SRAM rear derailleurs, they are an ideal choice for riders who want to get more speed and responsiveness from their existing groupset without a complete drivetrain overhaul.
These CEMA oversized pulley wheels are engineered for durability and consistent performance in a wide range of conditions, from everyday training rides to demanding races. The precise machining and carefully selected materials provide crisp, accurate shifting and long-lasting reliability, even under high loads and in bad weather. Whether you ride road, gravel, or cross, upgrading to oversized pulley wheels is a simple yet effective way to refine your bike’s performance. With CEMA’s focus on smooth bearings and low-friction design, you can enjoy a quieter, more efficient drivetrain and a more responsive ride feel.
