ospw aero for sram red force axsDelivery in 5 10 business days (EU) Finance available at checkout with humm by flexifi. OSPW Aero for SRAM Red Force AXS The Oversized Pulley Wheel System for SRAM Red and Force AXS features a 15 tooth upper and 19 tooth lower pulley wheel setting, for maximum efficiency. The handbuilt OSPW System has two spring tension settings, that allows customised setup based on riding conditions. This OSPW System is also compatible with the 2020 11 speed SRAM