Know the landed cost before you order
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Complete your SS headers and keep the factory tunnel brace
Join your Kooks long tube headers to the factory rear mufflers with a matching stainless X-pipe for your 2014-2017 Chevrolet SS. Choose Competition Only, Performance or GREEN connections, all using the OEM 2-1/2" rear connection and an updated layout that allows the factory tunnel brace to stay.
SKUs: 25103101, 25103201, 25103301
A crossover for your header conversion
The 3" front pipework joins matching Kooks long tube headers and transitions to the 2-1/2" OEM rear interface. The headers are a separate purchase, so this is the front connection choice when completing or changing your Kooks system.
Choose around your LS3 modifications
Performance cats are for naturally aspirated engines. GREEN supports forced induction, while Competition Only is the uncatted arrangement for competition use. The revised design retains the use of the original tunnel brace across all three choices.
Choose your configuration
| SKU | Configuration | Supplied arrangement | Fitting / engine conditions |
|---|---|---|---|
| 25103101 | Cat Type: Comp. Only | Competition Only connection assembly | Uncatted; competition use |
| 25103201 | Cat Type: Performance Cats | Performance Cats connection assembly | Naturally aspirated only |
| 25103301 | Cat Type: GREEN Cats | GREEN Cats connection assembly | Use the SKU-specific vehicle rows below |
Matching products
Add the Chevrolet SS long tube headers to complete the front system for your 2014-2017 LS3 car.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2014-2017 | Chevrolet SS Base | 6.2L V8 | 25103101, 25103201, 25103301 |
Intended use
25103101, 25103201: Competition, off-road and track use only. Not for use on public roads.
The competition-use waiver applies to 25103101.
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKUs | 25103101, 25103201, 25103301 |
| Application | 2014-2017 Chevrolet SS, LS3 6.2L |
| Material | 304 stainless steel |
| Pipework | 3" X-pipe to 2-1/2" OEM outlets |
| Retained parts | Factory rear mufflers and use of factory tunnel brace |
| Choices | Competition Only; Performance; GREEN |
| Required headers | Matching Kooks long tube headers; separate purchase |
| Performance condition | Naturally aspirated only |
Frequently asked questions
Will I need to remove the factory tunnel brace?
The updated X-pipe design allows it to be used.
Can I fit this with factory manifolds?
These X-pipes require matching Kooks long tube headers.
