Ceramic Speed OSPW X Alpha System for SRAM Red XPLR E1 Pulley Wheels The Oversized Pulley Wheel System X (OSPW X) from CeramicSpeed is one of the most refined ways to reduce drivetrain friction. Minimised Friction Featuring large pulley wheels with 14 teeth on the upper and 20 teeth on the lower wheel, the system reduces chain wrap and rotational resistance. This results in smoother, more efficient power transfer compared to conventional designs. Increased Durability The larger pulley wheels also contribute to extended service life, outperforming standard systems in both performance and longevity. Robust Construction The cage is constructed from carbon fibre reinforced with polyamide, offering exceptional strength and impact resistance. This ensures optimal function even in challenging off-road conditions, with improved resistance to rock strikes and trail debris. Designed for riders seeking maximum efficiency and durability, the OSPW X Alpha System delivers advanced performance in a robust package.