TiTek Innovations WRX/STi EJ20/EJ25 unequal length header and uppipe system is made from SUS304 stainless steel with our 4 to 1 (42.7mm, - 45.0mm - 60mm) design which will help you achieve the best performance throughout the power band. Will come with all gaskets and bolts for an easy installation. **OFF ROAD USE ONLY**
