Grams Performance DBW Electronic 72mm Throttle Body 2012+ Scion FR-S / Subaru BRZA 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 horsepower gains throughout the power band on heavily modified, naturally aspirated applications and even more on forced induction ones. This Part Fits: Year Make Model Submodel 2013 2016 Scion FR S Base