The Serpent 904195 Wide Center Pulley is a precision part made for the S989E chassis. Its 20 teeth help balance torque across a two-speed setup to improve shift consistency and reduce shock to the drivetrain. Manufactured from a high-wear composite, this pulley aims to offer dependable service during regular racing and practice sessions.
A sensible transmission upgrade for S989E racers who want steadier power delivery and reduced wear under race conditions.
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