KOSO Down Draft Type Intake Manifold EFI System Φ40mm for Yamaha Cygnus, BW’s, Zuma 125


Only 1 left in stock (can be backordered)


Down draft EFI intake system with ultra big velocity stack, adapters and mounting hardware…NOT available anywhere else in the USA except RnDmoto.
Throttle This is Down Draft Type Carburetor Joint for 40 Φ inner diameter.
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 process a helmet housing.
*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
[Included Parts]
Intake Manifold Body
Exclusive Gasket
Exclusive Spacer 2-types
Mounting Bolt
Exclusive Funnel

Additional information

Weight3 lbs