Introducing the long-awaited R9K 1AR / 2AR Billet Intake Manifold, a true game-changer for the AR platform! After extensive dyno testing and valuable input from multiple test owners, this intake manifold takes everything that made stock setups limited...

The FT450 is a engine monitoring and control system that combines electronic injection, integrated instrument panel, data acquisition and power management all in one. Super powerful with loads of features for a great price! We at R9K are moving to the...

V2 of one of the most innovative 2zz-ge products in recent years is now available for pre-order!!! Based on further development of the V1 "OG" design thanks to our customers and their valuable feedback the V2 is now fully tested!!!New Features:✅️...

If you are looking to complement your R9K header with an exhaust system, look no further. We offer a mid-pipe that bolts on directly to our header without the need for custom fabrication. This makes the installation as seamless as possible. Choose the...

  The standard when it comes to 2zz-ge headers, it’s designed based off the original PPE header we joint developed over 10 years ago, is further optimized in our proprietary version to yield the best top-end gains possible. Optimized runner...

  Do you track your car and are looking to improve your mid-range for those twisty short tracks? If so, this is the answer. This new design has proven gains over 12whp+ in the mid-range. Tuned lengths and properly sized runners guarantee unrivaled...