Header layout  4-2-1
Weight  5.6kg (12.2 pound) Compared with the stock header 10.5kg, our header is 4.9kg lighter
 
The 4-2-1 structure [ 4(50Ǿ) – 2(50Ǿ) – 1(55-60 Ǿ taper)] increases both torque and power for all the rev ranges.
Made by light SUS304 stainless with the thickness of 1.2mm to 1.5mm, the welding, material preparation and assembly are all hand made meticulously by the experienced craftsman.
The header has a fitting hole for air/fuel ratio sensor, which comes in handy when the car is to be fine tuned.
It works great for both AP1 F20C and AP2 F22C1 to maximize the engine potential.
 
This is our very popular stainless (SUS304) header combined with a special thermal wrap.  The thermal wrap is made by X-Tech which provides the same thermal wrap to many GT and Super Taikyu racing teams.
The thermal wrap increases the exhaust temperatures and velocity, which contributes to higher horsepower and lower engine bay temperature.  It also prevents the heat impact on the oil filter and keeps the engine oil temperature by about 10 C lower.
This special header performs very well at any driving stage.
 
Please apply the correct tightening torque.
After the several years, the welded area might crack from the vibration caused by the deteriorated engine mounts.  Please consult your local shop for fixing.
The round gasket is sold separately (not included)
 
Shipping is about 60-90 days