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Upgrade your Boss without giving up its side-exhaust layout
Your Boss 302 has an exhaust arrangement worth keeping. This Kooks kit combines 1-3/4" long tube headers with a Performance-catted H-pipe that includes side-pipe connections, while its 2-3/4" rear outlets join the OEM exhaust.
SKU: 1141H280
Made for the Boss arrangement
The H-pipe includes the connections for the side pipes, giving you the correct crossover layout for the 2012-2013 Boss 302. It is a useful distinction from the other Mustang kits, whose X or H crossovers do not offer this same side-pipe provision.
Headers and crossover matched together
The 304 stainless headers have 3" collectors feeding the supplied catted H-pipe. Performance cats suit the naturally aspirated 5.0-litre engine. Buying the combined kit brings the header and crossover specification together before fitting.
Tuning for your exhaust upgrade
We recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. Contact us to discuss the right tuning route for your vehicle.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2012-2013 | Ford Mustang Boss 302 | 5.0L V8 | 1141H280 |
Intended use
Competition, off-road and track use only. Not for use on public roads.
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 |
|---|---|
| SKU | 1141H280 |
| Application | 2012-2013 Mustang Boss 302 5.0L V8 |
| Material | 304 stainless steel |
| Headers | 1-3/4" primaries; 3" collectors |
| Crossover | Performance-catted H-pipe with side-pipe connections |
| Rear outlet | 2-3/4" OEM |
| Catalyst condition | Naturally aspirated only |
Frequently asked questions
Does the H-pipe have connections for the side pipes?
Yes. That provision is part of this Boss 302 kit.
Can I use it with a supercharger?
The supplied Performance cats are specified for naturally aspirated engines. Choose a forced-induction catalyst package for that build.
Do you recommend tuning with these headers?
We recommend tuning with every header installation. Talk to us about calibration for your vehicle, exhaust and other modifications.
