Upgrading your Honda K-series engine with an RBC or RRC intake manifold? You'll probably need this adapter. Stock K20 throttle bodies (62.5mm) have a different bolt pattern than the RBC/RRC manifold flange. This CNC-machined adapter from KIPA fixes that. It's made from tough 6061 billet aluminum. The cool part is it's a 'dual' adapter: it comes with a removable 7.5mm ring installed, so it works with your stock 62.5mm throttle body right away. Later, if you upgrade to a bigger 70mm throttle body, you just press out that ring and the adapter is ready for the larger size. No need to buy another part. The kit includes all the necessary hardware and even a thermal gasket to help reduce heat soak. It has a snug press-fit design so it won't leak. A must-have piece for that popular RBC/RRC manifold swap on your K20A, A2, A3, or Z1 engine.
