By setting Throttle to Up, it is possible to shorten the intake path as much as possible, leading to efficiency improvement.
Depending on how you use it can also be diverted to the Carburetor of Down Draft Type.
*It is necessary to close the injector hole when installing the carburetor.
*It is limited to vehicles equipped with downdraft carburetor and equipped with big throttle body.
Head Side Oval: 37-34mm
Throttle Side Inner Diameter: 40mm
Insulator Inner Diameter: 46mm
Intake Manifold Body
Exclusive Spacer 2-types