

This velocity-stack air funnel / horn cup is designed for direct fitment on PWK, OKO, KSR and similar performance carburetors using 50mm or 55mm inlet ports. The bell-mouth horn geometry accelerates incoming airflow, improving throttle response and top-end breathing compared to a flat panel filter. An integrated fine-mesh stainless steel screen protects against ingestion of large particles while maintaining high airflow. Anodized aluminum construction keeps weight minimal while providing durability in track and off-road environments. Compatible with most 28–34mm carburetor bodies fitted with 50mm or 55mm air boot ports.
| Inlet Diameter | 50mm / 55mm |
| Material | Anodized Aluminum + Stainless Mesh |
| Type | Velocity Stack / Horn Cup |
| Compatibility | PWK / OKO / KSR 28mm–34mm carburetors |
| MOQ | 50 pcs |
| Lead Time | 7–15 days |