This pulley is precision machined to exacting tolerances and fits the Magnuson supercharger system for the 2GR-FKS 3.5L engine and works with the stock-size belt.
The stock pulley is 90mm in diameter, and our upgraded pulley is 85mm. Depending on ambient conditions and other modifications, this pulley will produce approximately 1.5-2 PSI of additional boost over the stock pulley and is designed for simple bolt-on installation.
As always check and verify proper fueling and tuning.
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