Grams Performance Grams Performance DBW Electronic 72mm Throttle Body 2012+ Scion FR-S / Subaru BRZ - G09-12-0100 $419.99 $399.99 A larger throttle body is key to producing additional power throughout the power band on modified engines with increased airflow demands. The new Grams Performance and Design MKIV throttle body features a large 70mm bore, which results in significant... Add to Cart