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Infiniti DC Sports 4-1 Header System is dyno-test proven to improve performance by 8-12 HP. These Header units are designed for racing applications where the vehicle is being driven at or near redline, and deliver maximum performance at minimum price. Some of the striking features of DC Sports 4-1 Header System include:
- Precision bent in CNC-mandrel benders
- CNC-machined header flanges
- Robotic welder used to weld the flanges into the header pipe to achieve a uniform weld
- Machine-grinded flange-mating surfaces that ensure a leak-free seal
- Stainless steel finish minimizes the chances of rust
- Relocated O2-sensor to the collector area for an accurate sampling of all cylinders
- Constructed from OEM components, O2-sensor wire extension harness for all DC Sports 4-1 headers that require an O2-sensor wire extension. The harness makes it easier to connect the extension directly to the factory wire without any modifications.
- Available in polished finish, brushed finish, and ceramic finish. The polished finish features hand TIG welds at the flanges, while the brushed finish features machine MIG welds at the flanges. The ceramic header units have a matte finish to them for a more subdued look
- Available in either 1-piece or 2-piece design with 1-piece offering better airflow due to less airflow distortion, and 2-piece offering easier installability. DC Sports 4-1 one-piece header units do not come with exhaust gaskets or hardware. DC Sports 4-1 two-piece header units come with factory style O-rings and hardware to connect the two sections of the header
- If for some reasons, the stock components are damaged, you can pick up replacement parts at your local car dealer. DC Sports uses factory parts due to abundant supply
The DC Sports 4-1 header design maximizes top end power, while DC Sports 4-2-1 header evenly distributes it throughout the power band. After installation of DC Sports 4-1 or 4-2-1 headers, the engine noise level should not change appreciably.
All the DC Sports 4-1 header systems are backed with a solid1-year warranty. However, for all claims, you require a proof of purchase. PLEASE NOTE THAT REMOVAL OF THE FACTORY CATALYTIC CONVERTER WILL VOID THE WARRANTY ON YOUR DC SPORTS HEADER. This is so because the spring-loaded bolts used to connect the catalytic converter to the header system are often replaced with un-sprung bolts that can stress the flanges and cause failure. In case, you need to replace your catalytic converter (for off-highway use only) with a replacement pipe, we highly recommend the use of factory spring-loaded bolts.
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