When every cubic foot of airflow matters, the Granatelli Motorsports 108mm Drive-By-Wire Billet Throttle Body delivers the capacity needed for serious LS performance. Designed for high-output naturally aspirated engines and aggressive forced induction combinations, this oversized 108mm throttle body provides substantially more airflow than factory units, helping unlock horsepower while delivering crisp, responsive throttle control.

Each throttle body is precision CNC machined from 6061-T6 billet aluminum for exceptional strength, accuracy, and long-term durability. The oversized 108mm throttle opening is capable of flowing approximately 40% more air at 7,000 RPM than a factory throttle body, making it an excellent upgrade for engines that demand unrestricted airflow.

Granatelli’s heavy-duty electronic motor and proprietary throttle blade design are engineered specifically for high-boost environments. Rated to handle up to 25 PSI in both draw-through and blow-through configurations, the system helps prevent the throttle blade from being forced closed under boost, maintaining consistent airflow when your engine needs it most.

Installation is simple thanks to its direct replacement design. The throttle body uses the factory-style late-model GM 6-pin drive-by-wire connector, requires no transfer of factory components, and is compatible with both OEM and most aftermarket intake manifolds. It’s an outstanding match for TVS, Whipple, Roots-style superchargers, turbocharged applications, and naturally aspirated race builds alike.

Whether you’re chasing every last horsepower on the dyno or building a reliable high-performance street car, the Granatelli 108mm DBW Billet Throttle Body delivers the airflow, responsiveness, and durability needed to support your goals.

Note: Custom ECU tuning is recommended after installation to optimize idle quality, throttle calibration, drivability, and overall performance. Trailblazer SS applications require custom calibration—please contact us prior to ordering.