Product Description:
Hawks Motorsports is pleased to offer our clients the 2006-2013 Chevrolet Corvette C6 Z06/ZR1 3" GREEN Catted X-Pipe 7.0L/6.2L Connects to OEM Exhaust, Kooks 21613301. This Kooks 3" x 3" GREEN catted stainless steel X-pipe is designed for the C6 Corvette Z06 and ZR1, using the factory-style 3" Z06/ZR1 rear exhaust connection. The revised design features Torca swivel-seal connections and a three-piece X-section for improved fitment. The package includes the 3" x 3" mid-pipes and necessary clamps, but it requires Kooks long tube headers with Torca-style collector outlets.
If you're building a C6 that actually gets driven hard, this is the kind of exhaust component that makes sense when you're putting the whole system together as a package. The LS7 in a Z06 and LS9 in a ZR1 are built to breathe, and a full 3" exhaust path gives the combination the room it needs on the exhaust side. The GREEN cats keep this from being just another race-style pipe thrown underneath the car, while the X-pipe layout brings the two banks together in a performance-oriented configuration. Pair it with the proper Kooks long tubes, bolt it into the 3" Z06/ZR1 exhaust, and you've got the kind of setup that belongs underneath a Corvette that sees more than just cars-and-coffee duty.
Kooks constructs the X-pipe from 304 stainless steel with 3" tubing. The current revision incorporates Torca swivel-seal connections and a three-piece X-section intended to improve fitment and alignment. Kooks states that its GREEN catalytic converters are rated for applications up to 750 wheel horsepower and are suitable for forced-induction applications.
This is an important application-specific component: 21613301 does not connect directly to OEM exhaust manifolds or factory catalytic converters. Kooks requires its long tube headers, and the headers must have compatible Torca-style collector outlets. The rear portion connects to the 3" OEM-style Z06/ZR1 exhaust.
Kooks currently lists 21613301 as built to order, with a typical estimated ship window of approximately 4-6 weeks. Hawks notes that some Kooks products can require longer production times, so lead times should be considered estimates rather than guaranteed delivery dates.
KEY FEATURES
- Manufacturer: Kooks Headers & Exhaust
- Part Number: 21613301
- Product Type: GREEN Catted X-Pipe
- Application: 2006-2013 Chevrolet Corvette C6 Z06/ZR1
- Z06 Engine: 7.0L LS7
- ZR1 Engine: 6.2L LS9
- X-Pipe Size: 3" x 3"
- Tube Diameter: 3.000"
- Material: 304 Stainless Steel
- Catalytic Converter: GREEN Catted
- Rear Connection: 3" OEM Z06/ZR1-style exhaust
- Mid-Pipes: 3" x 3"
- X-Section: Revised three-piece design
- Connections: Torca swivel-seal
- Clamps: Included
- Header Requirement: Kooks long tube headers
- Collector Requirement: Torca-style collector outlet
- Condition: New
- Manufacturer Status: Built to order
- Typical Manufacturer Lead Time: 4-6 weeks
- Warranty: Kooks limited lifetime warranty to the original purchaser, according to current retailer/manufacturer-distributed specifications.
PRODUCT SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | Kooks Headers & Exhaust |
| Part Number | 21613301 |
| Vehicle | Chevrolet Corvette C6 |
| Models | Z06 / ZR1 |
| Z06 Engine | 7.0L LS7 |
| ZR1 Engine | 6.2L LS9 |
| Product Type | Catted X-Pipe |
| X-Pipe Diameter | 3" |
| Mid-Pipe Diameter | 3" |
| Material | 304 Stainless Steel |
| Finish | Stainless Steel |
| Catalytic Converter | GREEN |
| Inlet Diameter | 3.000" |
| Outlet Diameter | 3.000" |
| Rear Outlet | OEM-style |
| Outlet Quantity | 2 |
| Shape | X-Pipe |
| Connections | Torca swivel-seal |
| X-Section | Three-piece revised design |
| Clamps | Included |
| Condition | New |
Kooks' current product information confirms the 3" tubing, 304 stainless construction, GREEN catalytic converters, 3" OEM-style connection and revised Torca/three-piece X-section design.
VEHICLE FITMENT / FITS THE FOLLOWING MODELS
2006-2013 Chevrolet Corvette C6 Z06
7.0L LS7
- 2006 Corvette Z06
- 2007 Corvette Z06
- 2008 Corvette Z06
- 2009 Corvette Z06
- 2010 Corvette Z06
- 2011 Corvette Z06
- 2012 Corvette Z06
- 2013 Corvette Z06
2009-2013 Chevrolet Corvette C6 ZR1
6.2L LS9
- 2009 Corvette ZR1
- 2010 Corvette ZR1
- 2011 Corvette ZR1
- 2012 Corvette ZR1
- 2013 Corvette ZR1
The current Kooks application identifies the product for the 2006-2013 C6 Z06/ZR1 LS7/LS9 7.0L/6.2L configuration.
IMPORTANT APPLICATION NOTES AND EXCLUSIONS
Requires Kooks Long Tube Headers
This X-pipe does not connect to OEM exhaust manifolds or factory catalytic converters.
It requires compatible Kooks long tube headers.
Torca Collector Requirement
The current revised 21613301 uses Torca swivel-seal connections and must be paired with headers using a compatible Torca-style collector outlet.
OEM Exhaust Connection
The rear of the X-pipe is designed to connect to the 3" OEM-style Z06/ZR1 exhaust.
Do Not Confuse With Other C6 X-Pipes
Kooks offers several C6 Z06/ZR1 X-pipe configurations, including standard catted, GREEN catted and ULTRA X variations. Verify 21613301 specifically when replacing an existing X-pipe or ordering replacement components.
California / Emissions
Do not advertise this product as CARB compliant.
Current marketplace application information identifies restrictions on California sales/shipping for this product. Customers in California or other emissions-regulated areas should verify current requirements before ordering.
Power Rating
Kooks states its GREEN cats are rated for applications up to 750 wheel horsepower and are suitable for forced-induction applications. This is a manufacturer rating, not a guaranteed horsepower gain from installing the X-pipe.
INSTALLATION NOTES
- Verify the vehicle is a C6 Z06 or ZR1 before ordering.
- Verify the engine configuration: 7.0L LS7 or 6.2L LS9.
- Verify that the vehicle has compatible Kooks long tube headers.
- Confirm the headers use the required Torca-style collector outlet.
- Verify the rear exhaust is the 3" Z06/ZR1-style configuration.
- Follow the current Kooks installation instructions.
- The revised X-pipe uses Torca swivel-seal connections for alignment and sealing.
- Use the included clamps as specified by the manufacturer.
- Check exhaust clearance around the chassis and surrounding components.
- Inspect all connections for exhaust leaks after installation.
- Recheck exhaust connections after the initial heat cycle.
FREQUENTLY ASKED QUESTIONS
What Corvettes does Kooks 21613301 fit?
Kooks 21613301 is designed for 2006-2013 C6 Corvette Z06 and 2009-2013 C6 Corvette ZR1 applications using the 7.0L LS7 and 6.2L LS9 engines respectively.
What size is the X-pipe?
The X-pipe uses 3" tubing, with 3" x 3" mid-pipes connecting to the OEM-style exhaust.
What are the catalytic converters?
This is a GREEN catted X-pipe. Kooks rates its GREEN cats for applications up to 750 wheel horsepower and states they are suitable for forced-induction applications.
Does this connect directly to the factory exhaust manifolds?
No. The 21613301 requires Kooks long tube headers and does not connect directly to OEM exhaust manifolds or factory catalytic converters.
What type of header collector does it require?
The current revised design requires headers with a Torca-style collector outlet.
Does it connect to the OEM cat-back exhaust?
Yes. The rear portion is designed to connect to the 3" OEM-style Z06/ZR1 exhaust.
What is the X-pipe made from?
The X-pipe is constructed from 304 stainless steel.
What changed in the revised design?
Kooks revised the product with Torca swivel-seal connections and a three-piece X-section for improved fitment.
Are clamps included?
Yes. Kooks states that the necessary clamps are included with the X-pipe.
Is this a complete exhaust system?
No. This is an X-pipe assembly, not a complete exhaust system. Compatible Kooks long tube headers are required.
Is this product built to order?
Yes. Kooks currently identifies 21613301 as built to order and gives an estimated 4-6 week ship window, although production times can vary.
2006-2013 Chevrolet Corvette C6 Z06/ZR1 LS9/LS7 6.2L/7.0L 3" x 3"(OEM) GREEN Catted Stainless X-Pipe . Connects to 3" OEM (Z06/ZR1 Style) Exhaust. Includes 3" x 3" Mid-Pipes. Requires Kooks Long Tube Headers REVISED DESIGN - TORCA SWIVEL-SEAL CONNECTIONS AND 3 PIECE X-SECTION FOR IMPROVED FITMENT. MUST BE USED WITH HEADERS WITH TORCA STYLE COLLECTOR OUTLET
Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"
* Manufactured In The USA. Kooks Uses T304 Aircraft Quality Stainless Steel. Kooks Products are Backed by a Limited Lifetime Warranty To the Original Purchaser. Kooks Products Are Dyno And Race Tested and Designed For Maximum Power.
material: 304 Stainless Steel
color: Stainless Steel
tube diameter: 3.000 in.
application: Automotive
shape: X Pipe
finish: Stainless Steel
***Kooks is a built to order manufacturer and their focus is providing the best quality parts available. While their typical lead time is 4-6 weeks, some products may take up to 12 weeks to produce.***
