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SKU: 2170H530 | UPC: 842422177782
Kooks 1-7/8" x 3" Long Tube Headers & Off-Road X-Pipe for 2014–2019 Chevrolet Corvette C7 LT1 6.2L
The Kooks 1-7/8-inch long tube headers and off-road (catless) X-pipe kit delivers maximum flow for 2014–2019 Corvette C7 Stingray, Grand Sport, and Z06 models with the dry-sump LT1 6.2L V8, unlocking dyno-proven gains of 65–85 rear-wheel horsepower and 60–80 lb-ft of torque through equal-length primaries, merged collectors, and a high-flow 3-inch off-road X-pipe that bolts directly to the OEM NPP dual-mode exhaust for unrestricted flow from idle to redline.
Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges and full TIG welds, this race-oriented system supports over 900 HP with no catalytic converters for competition use while preserving the C7's exotic V8 soundtrack without drone. The precision design maintains factory ground clearance and heat shielding for track-day or street-driven supercars.
For C7 LT1 owners who demand championship-level performance for track or off-road competition, the 2170H530 kit is the race-winning, complete bolt-on solution trusted by Corvette racers worldwide.
Key Features
- 1-7/8-inch equal-length mandrel-bent primaries for maximum scavenging
- 3-inch off-road (catless) X-pipe for unrestricted flow
- Full T304 stainless steel with TIG welds and 3/8-inch flanges
- Merged collectors for optimal exhaust velocity
- Direct bolt-on to OEM NPP exhaust retains dual-mode function
- Dyno gains of 65–85 RWHP and 60–80 RWTQ
Product Notes
- Off-road use only – not 50-state legal
- Fits 2014–2019 C7 with dry-sump LT1 6.2L (Stingray, Grand Sport, Z06)
- Includes O2 extensions and all necessary hardware
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime on stainless construction to original purchaser.
Installation Notes
- Professional installation required lift and exhaust experience needed
- Remove factory manifolds and bolt headers to cylinder heads
- Connect off-road X-pipe to collectors and OEM NPP mid-pipe
- Torque flanges to 25-30 ft-lbs and run drive cycle for ECU adaptation
This Part Fits
| Year | Make | Model | Submodel/Engine |
|---|---|---|---|
| 2014–2019 | Chevrolet | Corvette | Stingray / Grand Sport / Z06 - LT1 6.2L Dry Sump |
Note: Fits all C7 with factory NPP exhaust. Off-road/race use only.
What's Included in the Purchase
- (2) 1-7/8" x 3" Long-Tube T304 Stainless Headers with Merged Collectors
- (1) 3" Off-Road (Catless) Stainless X-Pipe
- Gaskets, Stage 8 Locking Bolts, Clamps and Hardware
- O2 Sensor Extensions
- Detailed Installation Instructions
- Part Number: Kooks 2170H530
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Handcrafted in the USA from T304 aircraft-quality stainless steel
- Limited lifetime warranty and dyno-proven performance
Frequently Asked Questions
-
Q: Does this keep NPP valves working?
A: Yes, full dual-mode NPP function is retained -
Q: Street legal?
A: No, off-road/race use only – no catalytic converters -
Q: How loud is it?
A: Extreme V8 roar at WOT, refined in tour mode
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Heavy-duty box with foam protection.
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