Briggs & Stratton M-Series Intake Manifold - 555776 - QMA LegalMaximizing volumetric efficiency in a restricted class requires precision cast components that out flow standard cart parts right out of the box. The Briggs & Stratton 555776 M Series Intake Manifold is engineered specifically for Quarter Midget Association (QMA) racing, delivering the critical air density needed to optimize briggs and stratton lo206 horsepower. When you are building a race prepped lo206, the intake tract is your first line of defense