C7 Corvette Stingray ARH 1-7/8 Long Tube Headers & 3" X-Pipe (C7-14178300LSWC / C7-14178300LSNC)
The American Racing Headers (ARH) 1-7/8 long tube header system is built for the 2014–2019 C7 Corvette Stingray / Z51 (LT1 6.2L) when you want a true long-tube upgrade with a complete midsection. This setup uses ARH’s long-system layout with a 3" X-pipe and ends at the rear axle so it connects cleanly to stock or aftermarket axle-backs.
ARH C7 Stingray Long System – Product Details
- System layout: Long tube headers + long-system midsection + X-pipe (rear-axle connection point)
- Choose catted or catless: pick the configuration that matches your goals for sound, odor, and compliance needs
- Axle-back friendly: designed to mate to stock or aftermarket axle-backs at the rear axle
- Hardware included: includes O2 Sensor Extensions, install hardware and gaskets; band clamps included where applicable
Catted vs Catless (How to Choose)
- WITH Cats (C7-14178300LSWC): the better choice for most street-driven cars—reduces exhaust odor and keeps the tone cleaner while still improving flow. ARH uses high-flow “Severe Duty” catalyst options on this system.
- NO Cats (C7-14178300LSNC): maximum raw sound and flow—typically louder with more exhaust odor and intended for off-road/racing use.
Why American Racing Headers Leads…
- Built in the USA with premium stainless construction
- Optimized routing for consistent fitment and performance
- Merge collectors with scavenger spikes for strong exhaust scavenging
- Lifetime warranty manufacturer backing
Benefits
- Frees up exhaust flow vs. factory manifolds for stronger performance potential
- Sharper throttle response when paired with the right calibration
- More aggressive exhaust character under throttle
- A strong foundation for future mods (intake, cam, heads, forced induction)
What to Expect After Installation
Expect a noticeably louder cold start and a more aggressive tone under load. This system is designed to work with stock axle-backs (including NPP-style setups) or aftermarket axle-backs, so you can choose how wild the final sound becomes. Tune required: Yes—plan on tuning to optimize drivability and reduce the chance of warning lights after install.
Technical Specifications
- Header primary tube OD: 1-7/8 in.
- Collector OD: 3.00 in.
- Collector attachment: Ball-and-socket flange
- Primary tube gauge: 18-gauge
- Flange thickness: 0.38 in. (3/8 in.)
- X-pipe included: Yes (X-pipe), 3.00 in. diameter
- Catalytic converters (catted version): Yes, qty 2
- Bolts/studs: Included
- Gaskets: Included
- Quantity: Sold as a pair
- Tune required: Yes
Installation Overview
This is a direct bolt-on long-tube system, but it’s still an advanced install compared to axle-backs. A lift is strongly recommended. Plan for typical header-install steps: removing factory manifolds, routing O2 sensors, test-fitting for clearance, tightening in sequence, and checking for heat exposure around nearby wiring/lines. After installation, tuning is required to get the results you want.
Corvette Compatibility
- Fits: 2014–2019 C7 Corvette Stingray / Z51 (6.2L LT1)
- Transmission: Manual and automatic
- Body styles: Coupe and Convertible
Cross-Compatibility & Related Fitment
- If you have a C7 Grand Sport or C7 Z06, use the dedicated ARH product page for your trim so your setup is matched correctly.
- If you’re unsure on exact configuration (cats, primary size, axle-back pairing), contact us and we’ll confirm the right system for your build.
Compliance & Warranty
- Emissions: Off-road / racing use (check local requirements before purchase)
- Warranty: Lifetime warranty (manufacturer)
Testimonials
“Fit was excellent and the car woke up everywhere in the midrange. With the right tune, it runs exactly how it should.”
Custom Corvette Accessories is enthusiast-run, focused on correct fitment, fast nationwide shipping, and real-world Corvette ownership support.
If you want a premium long-tube system that’s built to connect cleanly at the rear axle and give your C7 Stingray the airflow foundation it deserves, the ARH 1-7/8 long system is a top-tier choice.
Vehicle Fitment & Specifications
| Generation: | C7 |
| Model Years: | 2014 - 2019 |
| Trim Level: | Stingray, Grand Sport |
| Engine Code: | LT1 |
| Transmission Type: | Manual, Automatic |
| Intended Use: | Street |