Short dual air intake
Long dual air intake

Dual Stage Induction: 135/150HP

Honda’s exclusive Dual Stage Induction manages air intake effectively to improve engine performance.

Most four-strokes use long manifolds to deliver air into the cylinder head. The BF135 and BF150 use a shutter valve inside the manifold to change the resonance and air flow.

Low-Mid RPM Operation:

Benefit: Maximizes low-end torque!

Mid-High RPM Operation:

Benefit: Produces more power!