This new Weapon R race header for the 2006-2011 Civic DX/LX/EX (R18 motor) replaces your undersized factory exhaust in favor of a full 2.5" exhaust setup. This Weapon R header is one of the largest on the market for the R18 Civic. It is made of 304 stainless steel and features CNC machine mandrel bending which clears the factory lower arm bars.
- About a 6 whp gain, more with other modifications.
- Stainless steel flanges.
- Stainless steel CNC mandrel bent tubes.
- TIG welded for strength and durability.
- Eliminates catalytic converter for best performance.
- One of the best power mods for the R18 Civic.
- Comes complete with install hardware.
Emissions Notes: This product will eliminate your catalytic converter and is not smog legal. If you still want to use a catalytic converter with a race header, we highly recommend using one of our MagnaFlow Spun Metallic high-flow cats (with a little help from a muffler shop, it can be made to work).
Availability: Unless otherwise noted, this product is usually in stock at one of our warehouses, or will ship directly from the manufacturer.