A machined aluminum 15-tooth drive pulley designed for Works'91 TeamSpec applications. The YZ-630W2 replaces the standard pulley to offer a durable, lightweight option that maintains original mounting points and basic fitment for the supported chassis.
Focus is on drivetrain behaviour rather than cosmetic change: the pulley affects gear mesh feel and transient acceleration, so it is commonly used during gear ratio tuning and routine maintenance. Check alignment and spur/pinion engagement after fitment to avoid premature wear.
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