DC Sports 4-2-1 Header for 94-01 Integra RS/LS/GS (Equal Length, 50-State Legal)

This DC Sports 4-2-1 Integra performance exhaust header replaces the factory cast manifold on 1994–2001 Integra RS/LS/GS models with a true equal-length, mandrel bent Integra header. Four equal-length primaries merge into two secondaries, then into a single collector, giving you a proper Integra midrange performance header instead of a heat-soaked lump of cast iron. The layout times exhaust pulses and reflected pressure waves to pick up torque where you actually drive—roughly 3,000–6,000 rpm—so the car pulls harder in gear, reacts quicker to throttle, and feels smoother everywhere in the midrange.

Compared to a 4-1 Integra larger diameter header that only chases peak power at the very top, this DC Sports 4-2-1 header focuses on usable torque and response. The 4-2-1 layout fills in the low and midrange instead of giving you a dead spot below VTEC. It’s a better match for a street-driven B-series that still sees canyon runs, highway pulls, and the occasional track day. The compact merge keeps everything tucked up nicely, so ground clearance stays close to stock and you’re not grinding the collector on every steep driveway.

The Acura Integra stainless header version uses corrosion-resistant 304 stainless with smooth transitions to keep flow clean and temps more manageable compared to the OEM manifold. You get a sharper exhaust note, better response, and an Integra performance exhaust header you won’t have to keep replacing because it rotted out.

Optional Ceramic Coating Finish

Step up to the DC Sports Integra ceramic header (SKU: AHC6006) if you want more aggressive heat control. The DC Sports ceramic coated header finish is rated to 1,200°F, so it keeps more heat inside the tubes, which helps exhaust gas velocity and keeps power repeatable on longer pulls and hot days. You’ll see a noticeable drop in under-hood temps—your intake, wiring, and hoses all live an easier life, and you’re less likely to heat-soak your intake charge in traffic or staging lanes. The coating holds up to repeated heat cycles and keeps the header looking clean instead of turning into a flaky, rusty mess. We run this same C.A.R.B. compliant Integra header on our own cars for exactly that reason.

Emissions & Compliance

This is a DC Sports 50 state compliant, C.A.R.B. compliant Integra header with an EO number, so you can stay legal and still get real gains. That means you can bolt it on, daily the car, and pass visual and tailpipe testing without playing the “swap the stock manifold back on” game every two years.

Features

• Real gains where you use them – DC Sports 4-2-1 header layout adds midrange torque and gives your B-series a stronger pull from 3,000 rpm to redline
• Cooler engine bay temps – the DC Sports ceramic coated header option keeps heat in the pipes, protecting hoses, wiring, and your intake charge
• 50 states legal Integra header – C.A.R.B. compliant Integra header with an EO number, so you can pass visual and sniffer tests without drama
• Built for abuse – thick flanges resist warping and stout construction holds up to years of high-rpm pulls, canyon runs, and track days
• Bolt-on friendly – works with stock or aftermarket cat-back systems, intake, and tune on any Integra LS exhaust header or Integra GS stainless header type build

If you want a 50 states legal Integra header that actually wakes the car up every time you roll into the throttle, this DC Sports Integra equal length header is it. Whether you’re dailying the car, blasting through backroads, or chasing cones at an autocross, this mandrel bent Integra header setup gives you a cleaner exhaust note, stronger midrange, and better top-end pull without turning your Integra into a pain to live with.

Options & Specs

• SKU: AHS6006 – Finish: Stainless Steel Acura Integra stainless header
• SKU: AHC6006 – Finish: Ceramic Coated DC Sports ceramic coated header