COMP Cams 54107 FAST 102mm Big Mouth Billet Throttle Body with TPS and IAC - Black

The FAST 102mm Big Mouth Billet Throttle Body (Part #54107) is a high-performance, cable-driven throttle body engineered to maximize airflow and power output on GM Gen III and Gen IV LS engines. Constructed from billet aluminum and finished in an aggressive anodized black coating, this throttle body delivers serious performance gains with a premium appearance to match. This version includes both the Throttle Position Sensor (TPS) and the Idle Air Control (IAC) motor for a complete, ready-to-install package.

Key Features:

• 102mm bore — nearly 40% larger than stock, delivering a substantial increase in airflow
• Billet aluminum construction for superior strength and precision machining
• Anodized black finish for corrosion resistance and clean aesthetics
• Includes TPS and IAC — complete bolt-on installation with no additional sensors required
• Increased throttle blade thickness eliminates blade deflection, especially critical in boosted applications
• Offset blade pivot for smoother operation and improved throttle response
• Reinforced linkage with dual throttle spring mechanism ensures positive throttle return and total control
• CFD-optimized cross-sectional flow reduces airflow turbulence for improved part-throttle drivability
• Compatible with FAST LSXR, LSXRT, and LSXHR intake manifolds, as well as any manifold with a 102mm or larger inlet

Designed by FAST (Fuel Air Spark Technology), a leader in performance fuel injection technology, the Big Mouth Throttle Body series is the result of extensive engineering and flow-bench testing. Whether you're building a street/strip LS swap or pushing the limits on a boosted platform, the FAST 54107 provides the airflow capacity and mechanical reliability your build demands.