C7 Corvette Grand Sport 1-7/8" American Racing Headers Long System (2017–2019)
The American Racing Headers (ARH) 1-7/8" Long System is a premium long-tube header upgrade built for the 2017–2019 C7 Corvette Grand Sport (6.2L). This is a full long-system layout that runs to the rear axle and connects to your factory or aftermarket axle-back, delivering a harder pull, faster airflow, and a more aggressive exhaust character.
Choose Your Version
- With Cats (C7-14178300LSWC): Long tubes + catted X-pipe + rear connection pipes
- No Cats (C7-14178300LSNC): Long tubes + off-road X-pipe + rear connection pipes
ARH Long System – Product Details
- Long-tube, one-piece header design with optimized routing for clean fitment
- Merge collectors with scavenger spikes for improved exhaust scavenging
- Full long-system layout that ends at the rear axle and mates to axle-back exhaust
- X-pipe midsection included for smoother flow and a sharper, more performance-focused tone
- Made in the USA and backed by a lifetime warranty
Benefits
- Stronger acceleration feel and improved throttle response
- More aggressive exhaust note (especially under load and at wide-open throttle)
- High-quality stainless construction designed for long-term heat cycles
- Clean install path for performance builds that still retain an axle-back
What to Expect After Installation
On a C7 Grand Sport, long tubes typically deliver a louder cold start, a deeper and sharper tone under throttle, and a more responsive feel as airflow improves. For best results, most builds pair headers with the appropriate tuning strategy.
Technical Specifications
- Primary tube diameter: 1-7/8"
- Collector diameter: 3.0"
- Collector attachment: Ball-and-socket flange
- Material: 304 stainless steel
- Primary tube gauge: 18-gauge
- Flange thickness: 3/8"
- Crossover pipe: 3.0" X-pipe included
- Catted option: (2) catalytic converters included
What’s Included
- Long tube headers (sold as a pair)
- X-pipe midsection (catted or off-road configuration based on option selected)
- Rear connection pipes to the rear axle / axle-back interface
- O2 sensor extension wires
- Install hardware and gaskets
- Band clamps (where applicable)
Installation Overview
This is an advanced install. Plan for adequate lift access, an O2 sensor tool, and careful routing/connection alignment. Final tightening and re-check after heat cycling is strongly recommended for long-term sealing.
Corvette Compatibility
- Fits: 2017–2019 Chevrolet Corvette C7 Grand Sport (6.2L)
- Transmission: Manual and Automatic
- Body style: Coupe and Convertible
Compliance & Warranty
Performance headers are commonly sold for off-road / racing use and may not be legal for use on public roads—verify your local emissions requirements before purchase. ARH backs this system with a lifetime warranty.
What Customers Say
- Excellent build quality and weld consistency
- Noticeably stronger sound and a more “awake” feel under throttle
- Fitment is clean when installed with the right tools and patience
- Catted vs catless choice usually comes down to odor, legality, and how aggressive you want the setup
Custom Corvette Accessories is enthusiast-run and focused on correct fitment, fast nationwide shipping, and real-world Corvette ownership support. If you want a premium long-tube header system for your C7 Grand Sport, this ARH 1-7/8" Long System is a proven, top-tier upgrade.
Vehicle Fitment & Specifications
| Generation: | C7 |
| Model Years: | 2017 - 2019 |
| Trim Level: | Grand Sport |
| Engine Code: | LT1 |
| Transmission Type: | Manual, Automatic |
| Intended Use: | Street |