The Serpent 401633 Aluminum 19T Mid Pulley is a direct-fit upgrade engineered for the S411 chassis. Manufactured from durable aluminium, it provides a reliable alternative to stock parts and helps maintain smooth power transfer under race conditions.
Constructed from solid aluminium, the Serpent 401633 mid pulley stands up to repeated use while keeping rotating mass controlled. This balance helps preserve acceleration characteristics and keeps the drivetrain stable during aggressive driving.
Designed specifically for the Serpent S411, the 19T pulley installs without modification and aligns precisely with existing components. Whether replacing a worn pulley or fitting an upgrade, installation is quick and straightforward.
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