The BOOST 102mm throttle body is designed to support incredible power levels are cars that plan to still be street driven or want to retain throttle response in time attack or high powered drift cars. This throttle body is capable of supporting over 1000whp while still retaining great drivability. The 102mm throttle body is a direct fit for 4″ silicone hose. If you’re looking to make serious horsepower while still retaining throttle response and drivability, then this is the throttle body for you. Available in CW and CCW rotation to suit your TPS sensor regardless of engine model. Not sure if you need CW or CCW rotation throttle body, contact our team today for the best customer support in the industry and we’ll be sure to get you exactly what you need. BOOST throttle body project began in response to customers’ requests for a throttle body worthy of the quality and performance of their range of intake manifolds. BOOST aim was to provide the best possible combination of performance, appearance, reliability and ease of implementation. Take a look at the list of features and we are sure you will agree, BOOST has achieved that objective! CNC machined 6061T6 billet aluminum body section provides the best combination of strength, accuracy, light weight and appearance. Diameters have been chosen based on commonly available hose sizes and a large bead is provided to assure positive retention of the hose under boosted applications. Body section is clear anodized to further improve longevity and wear resistance (custom anodized colors available) 10mm diameter slotted steel shaft combined with 2mm thick brass butterfly provides high resistance to bending in supercharged / turbocharged applications. Shaft is blackened for corrosion resistance and improved appearance. Butterfly is machined in an elliptical shape with 7 degree taper to perfectly fit the throttle bore improving sealing and resistance to binding common with many other designs.