C5 Corvette 1-3/4" American Racing Headers Long Tube Header System (1997–2004)
For 1997–2004 C5 Corvette coupe and convertible owners, the American Racing Headers (ARH) 1-3/4" long tube header system replaces the factory manifolds and completes the flow path with an X-pipe midsection to the rear-axle connection point, then mates to your axle-back. The result is a cleaner, higher-efficiency exhaust path for the LS platform, sharper throttle response, and a more aggressive tone under load.
Choose Your Configuration (Catted or Catless)
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With high-flow cats (catted X-pipe): severe-duty 300-cell catalytic converters
- 1997–2000: C5-97134300LSWC
- 2001–2003: C5-01134300LSWC
- 2004: C5-04134300LSWC
-
No cats (catless X-pipe):
- 1997–2000: C5-97134300LSNC
- 2001–2003: C5-01134300LSNC
- 2004: C5-04134300LSNC
ARH C5 1-3/4" System – Product Details
- 304 stainless steel construction
- 1-3/4" primary tubes flowing into 3" collectors
- Merge collectors with scavenger spikes to improve exhaust velocity
- 3/8" laser-cut flanges for a warp-resistant, leak-resistant seal
- Hand-ported TIG welded inlets and optimized primary routing for clean fitment
- X-pipe midsection included to complete the system to the rear-axle connection point
Benefits
- More efficient exhaust flow vs. restrictive factory manifolds
- Stronger mid-range pull and sharper throttle response (results vary by setup and calibration)
- A deeper, more aggressive sound character under acceleration
- Built for long-term durability with corrosion-resistant stainless construction
What to Expect After Installation
Expect a more responsive feel when rolling into the throttle and a stronger exhaust presence under load. Catless setups run louder and sharper; catted systems keep the tone aggressive with a more controlled edge.
Technical Specifications
- System type: Long tube headers + X-pipe midsection (mates to axle-back)
- Primary diameter: 1-3/4"
- Collector diameter: 3"
- Collector attachment: Ball-and-socket style connection
- Collector design: Merge collectors with scavenger spikes
- Material: 304 stainless steel
- Flange thickness: 3/8"
- Midsection note: 1-3/4" midsections use a 2-1/2" reduction at the flange to connect to the stock system
What’s Included
- Long tube headers (pair)
- X-pipe midsection (catted or catless depending on selection)
- O2 extension harnesses (required to complete the install)
- Install hardware and gaskets
- Band clamps included where applicable
Installation Overview
Direct-fit upgrade with no cutting or welding. Typical install includes removing factory manifolds, positioning headers, installing the X-pipe midsection, aligning the rear-axle connection point, and tightening to spec. A proper ECU calibration is required after installation for best results.
Corvette Compatibility
- Fits 1997–2004 C5 Corvette Coupe & Convertible (5.7L V8 platform)
What Customers Say
- Fit and routing feel purpose-built compared to generic header kits
- Stronger pull in the mid-range once calibrated correctly
- Sound becomes deeper and more aggressive without needing a full cat-back swap
- Weld quality and flange sealing are commonly praised on long-term installs
Custom Corvette Accessories is enthusiast-run—focused on correct fitment, fast shipping, and real-world Corvette support.
Vehicle Fitment & Specifications
| Generation: | C5 |
| Model Years: | 1997 - 2004 |
| Trim Level: | Base |
| Engine Code: | LS1 |
| Transmission Type: | Manual, Automatic |
| Intended Use: | Street |