TF-Works K-Series Kswap RWD High-Rise NA Header (4-1)

Description

By popular demand, we have released our RWD Kswap High-Rise header for RHD S-Chassis!
Our new 4-1 design features a tighter fitment towards the engine offering more clearance away from the strut tower.
This header will fit the LHD S-chassis, FRS, BRZ, E30 using our Kswap kit.
This header will also fit LHD AE86 Corolla, FC RX7, FD RX7, IS300, ’67 Mustang, (based on customer fitment) and many more with a RWD KSwap.
We decided it was time for us to design our own header, which outperforms other brands and have an era-proper appeal.

High-Rise style was popular in the late 80’s to early 90’s on cars such as the Hachi-Roku’s and even the Beams motor swaps. The styling balanced out the engine bay after the K-series is swapped in as before, the passenger side looked very boring.
The reason for the header was not only for the looks, but because the S2000 RWD K-series header we purchased online had restrictions in the design, which prevented the engine from performing to its full potential.
When it comes to header design, most look for the most effective exhaust gas scavenging which in turn will provide a better overall efficiency of the engine.
For our new version, we went with the 4-1 header design to achieve a more linear power band for the K-series engine as we all know the K-series makes most of the power up top.
Our headers begin with a port matched 1.75″ primaries and transition to 2.0″ Primaries. It then flows through a 2.8″ collector, which then exits through a 3″ double slip joint. Making sure the header has clearance around the steering shaft and make its way down for the exhaust we used a double slip joint for easier install and removal.
Our RHD header is made to clear ZF and CD009 transmissions.
Just like our intake manifold, the bottom holes for the header flange is slotted for easy install.
Designed and fabricated in-house out of polished 304 stainless steel. Back purged for optimum strength. Each header is test-fitted on our jig with a CD009 trans.
Please note that the fitment was based off of our own K-swap kits. Fitment is not guaranteed with any other kits or custom kits.
The color of the header will change as it is heat cycled.
When fabricating a catback exhaust with our header, please make sure to weld in a flex section to prevent any damage if ground clearance becomes an issue on lowered cars.
Two or more exhaust hangers should be on the catback exhaust to alleviate twisting and hanging.
Exhaust without a Flex section will void warranty.
Exhaust without two or more hangers will void warranty.

Included:
-Stainless steel slip joint
-OEM Honda multi-layer stainless steel manifold gasket