This 20-tooth 2-speed belt pulley is intended for use with XRAY RX8 two-speed setups and is supplied by Arrowmax as model AM-RX8-345820. Manufactured from 7075 T6 aluminium with a hard coating, the pulley is engineered to cut rotating weight while providing a tougher contact surface for the belt. The side perforations are meant to shed detritus from the belt path to reduce accumulation that can affect shifting.
Within an RX8 two-speed layout the pulley serves as a tuning component that alters final drive behaviour and shift timing. CNC precision ensures concentricity that supports smoother belt operation and consistent engagement at higher engine speeds. Use this pulley when a worn unit needs replacement or when refining an RX8 transmission build.
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