The exhaust manifold found on the 1988-2000 Honda Civic and CRX D15/D16 SOHC 4 Cylinder Engines were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-2-1 Tri-Y off-road racing headers are designed to allow the exhaust gasses to flow more freely from each cylinder and combine in a more efficient manner. Tubing has been optimized for the 1.5L and 1.6L engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.
This product is compatible with:
- Made of high quality steel with 4-2-1 direct bolt-on design
- TIG welded CNC machine flange
- O2 sensor bung insertion / Metal gasket included / Inlet: 1.75″ / Outlet: 2″
- Dyno Approved Instant Increase in HPS & Torque 4K+ RPMs
- Application: Please check part finder on top of the page (Professional Installer is Highly Recommended) (No Instruction Included)