Upgrade your K20 or K24 engine with the TRC RBC/RRC Dual Throttle Body Adapter! This versatile 62/70mm adapter features a unique press-fit 7.5mm ring, allowing compatibility with both the stock 62.5mm RSX throttle body and a larger 70mm aftermarket throttle body. Planning an upgrade? Simply press out the ring for a seamless transition. This kit includes all necessary hardware for both throttle sizes, making it perfect for performance enthusiasts. Crafted from durable aluminum, itâs built to last and backed by a 1-year warranty. Enhance your vehicle's performance today with this essential throttle body adapter!.