Overview Effective at eliminating ventilation and cavitation for small powerboats such as the Grabner and Takacat boats. This plate will also get boats on plane faster even without ventilation or cavitation issues. M3 fits 3HP outboards, M4 fits 4-6 HP outboards M5 fits 8-30HP outboards. Select the proper size plate match your outboard then add to cart! Right now we only have Grey.