Sale ZPE Griptec 2.30" 10 Rib LT4 Supercharger Pulley ZPE Griptec 2.30" 10 Rib LT4 Supercharger Pulley If you're doing a custom 10 rib setup with a factory LT4 supercharger then this is the pulley for you. Its 10 ribs +2 forward and 2.30" in diameter. MSRP: Was: $259.99 Now: $159.99 Add to Cart