Koso High Performance Intake Manifold Honda Grom / Monkey Koso has a fuel suite of performance upgrades for your Grom. Pair this Intake Manifold with their 28mm throttle body for a noticeable improvement in performance and throttle response! Ideal for performance minded riders looking to optimize engine output, this intake manifold works seamlessly with the Koso Throttle Body. Features: Improved flow for increased power Designed to compliment the Koso 28mm Throttle Body