Hawks Motorsports is pleased to offer our clients the following 2014-2019 Chevrolet Corvette C7 6.2L 3" Stainless Steel Competition Only X-Pipe that connects to the OEM-style 2-3/4" exhaust, by Kooks, part number 21703100.

When you're building a C7 around a set of long tubes, choking the system back down with restrictive factory exhaust components isn't exactly the point. This 3-inch Kooks X-pipe keeps the exhaust moving between the headers and the factory-style rear exhaust, giving the LT-powered C7 a proper full-size path up front while retaining the OEM-style 2-3/4-inch connection at the rear.

Kooks part number 21703100 is a 3-inch 304 stainless steel Competition Only X-pipe that connects to the 2-3/4-inch OEM-style rear exhaust and includes 3-inch x 2-3/4-inch mid-pipes. This system contains no catalytic converters and requires compatible Kooks Long Tube Headers.

KEY FEATURES

• Kooks part number 21703100
• 2014-2019 Chevrolet Corvette C7 application
• 3-inch Competition Only X-pipe
• 304 stainless steel construction
• 3-inch tube diameter
• Connects to 2-3/4-inch OEM-style rear exhaust
• Includes 3-inch x 2-3/4-inch mid-pipes
• Contains no catalytic converters
• Requires compatible Kooks Long Tube Headers
• Designed for applicable C7 6.2L LT-powered Corvette models

PRODUCT SPECIFICATIONS

VEHICLE FITMENT / FITS THE FOLLOWING MODELS

Current Kooks fitment information identifies the following C7 Corvette applications:

• 2014-2019 Chevrolet Corvette Stingray — 6.2L
• 2014-2016 Chevrolet Corvette Z51 — 6.2L
• 2015-2019 Chevrolet Corvette Z06 — 6.2L LT4
• 2017-2019 Chevrolet Corvette Grand Sport — 6.2L
• 2019 Chevrolet Corvette ZR1 — 6.2L LT5

The manufacturer identifies part number 21703100 within its 2014-2019 C7 Corvette X-pipe application family.

IMPORTANT APPLICATION NOTES AND EXCLUSIONS

Competition Only — No Catalytic Converters

Kooks 21703100 is a Competition Only X-pipe and does not contain catalytic converters. It should not be confused with the catted, GREEN catted, or High Output GREEN catted versions available under different Kooks part numbers.

Requires Kooks Long Tube Headers

This X-pipe requires compatible Kooks Long Tube Headers. It is not designed to connect directly to the factory exhaust manifolds or factory catalytic converter assemblies.

Connects to OEM-Style Rear Exhaust

The included mid-pipes transition from the 3-inch system to a 2-3/4-inch OEM-style rear exhaust connection.

Emissions and Street Use

Because this system does not contain catalytic converters, emissions and street-use legality can vary by jurisdiction. The current Hawks product information specifically states that it is not legal for sale, installation, or use on a licensed vehicle in California and does not meet CARB compliance. Verify all applicable federal, state, and local regulations before purchase or installation.

INSTALLATION NOTES

• Confirm the exact C7 Corvette year, model, and engine configuration before installation.
• This X-pipe requires compatible Kooks Long Tube Headers.
• Verify compatibility with the vehicle's OEM-style 2-3/4-inch rear exhaust connection.
• Follow the current Kooks installation instructions.
• Check exhaust routing and clearance throughout the system.
• Inspect the completed installation for exhaust leaks.
• Recheck the exhaust system after initial heat cycles.

FREQUENTLY ASKED QUESTIONS

What Corvettes does Kooks 21703100 fit?

Kooks lists 21703100 in its 2014-2019 Chevrolet Corvette C7 X-pipe application range, including applicable Stingray, Z51, Z06, Grand Sport, and ZR1 models.

Does Kooks 21703100 have catalytic converters?

No. This is a Competition Only X-pipe and does not contain catalytic converters.

Does this connect to the factory rear exhaust?

Yes. Kooks specifies that the system connects to the 2-3/4-inch OEM-style rear exhaust using included 3-inch x 2-3/4-inch mid-pipes.

Does this require Kooks headers?

Yes. Kooks specifies that compatible Kooks Long Tube Headers are required.

What is the X-pipe made from?

Kooks specifies 304 stainless steel construction with a 3-inch tube diameter.

What is the difference between 21703100 and 21703300?

The main difference is the catalytic converter configuration:

• 21703100: Competition Only X-pipe with no catalytic converters
• 21703300: GREEN catted X-pipe

Both are separate Kooks configurations and should not be treated as interchangeable.

Is this X-pipe CARB compliant?

No. Current Hawks product information states that it does not meet CARB compliance and is not legal for sale, installation, or use on a licensed vehicle in California.