Protect And Prevent Damage To Motor'S Skeg Or Replace An Already Broken One.. For YAMAHA VMAX HPDI & SHO 200-225-250 4 Stroke 20' Shaft VMAX SHO 2013-Present (LA Model Only Not Compatible With XA) 200-225-250-300 2 Stroke VMAX HPDI 2004-2010