A Season of Proof: The K-Swap S2000 Header That Survived GLTC
During the 2025 Gridlife GLTC season, Andy Smedegard and the team at ASMotorsports ran KPower’s new RWD K-swap S2000 4-2-1 header on their GLTC car for a full year of competition. Not as a concept. Not as a prototype. As a production unit. The same one customers can now buy.
And it never came back off the car for failure.
Why This Even Matters
Anyone who has built a K24-swapped S2000 knows the truth.
Header options have always been limited. The gold standard for power and durability was modifying an OEM F-series S2000 header. It worked. It made a great powerband. It did not crack. But it required cutting, welding, fabrication skill, and time.
That is not a bolt-on solution.
ASMotorsports had been searching for something better for years. A header that matched the OEM design’s usable powerband but removed the fabrication tax entirely.
That is where KPower stepped in.
Built Like a Race Part, Not a Catalog Part
Before settling on the final design, ASM and KPower tested multiple configurations, dialing in collector sizing and layout to replicate the broad, usable powerband the S2000 chassis thrives on.
When it came time to durability test, they did something most companies skip.
They did not test a prototype.
They tested a production header.
It was installed on a GLTC S2000 and run through an entire season of:
• Dyno sessions
• Full race weekends
• Hard track miles
• Repeated removal and inspection
Every time the header came off for inspection, it was flawless. No cracking. No stress fractures. No compromised welds.
That is real-world validation.
The Technical Foundation
The reason it worked is not magic. It is engineering.
This header features:
• A proper 4-2-1 design
• Optimized cylinder pairing 1–4 and 2–3
• 1.75 inch primaries stepping to 2.25 inch secondaries
• A 2.5 inch collector
• 16 gauge 304 stainless construction
• OEM style exhaust flange
• Compatibility with stock and aftermarket S2000 exhausts
• Fitment with both Hasport and RBZ engine mounts
It is built to produce a broad, usable powerband for both street and race applications. Not just a dyno spike.
On a GLTC car, that matters. You need midrange. You need repeatability. You need parts that survive heat cycles and curb hits.
A Full Season Without Drama
In racing, parts that “should work” get exposed quickly.
This one did not flinch.
Through an entire year of building, tuning, racing, and inspecting, the KPower RWD K-swap S2000 header proved itself the hard way. On track. Under load. In competition.
That is the difference between a cool new product and a race-proven solution.
Now It Is Your Turn
The same production header that survived a full Gridlife GLTC season with ASMotorsports is now on the shelf.
No more modifying OEM headers.
No more cutting and welding.
No more guessing about durability.
If you are building a K24-swapped S2000, this is the piece that ties the whole package together.
Race-tested. Dyno-proven. Production-ready.
👉 Finish your K-swap the right way with the KPower RWD 4-2-1 S2000 header.
Available now and ready to ship.
Purchase at:
Kpower Website
ASM Website