Super Scarab SS-50/50A Increased cylinder bore to 4.625 inches to develop 145 hp (108 kW) at 2,050 rpm from 499 cu in (8 l) with a dry weight of 303 lb (137 kg). Super Scarab SS-165 Increased compression ratio from 5.2:1 to 6.4:1 to develop 165 hp (123 kW) at 2,100 rpm with a dry weight of 341 lb (155 kg). Super Scarab SS-185 Increased cylinder bore to 4.875 inches, developing 185 hp (138 kW) at 2175 rpm from 555 cu in (9 l), with a dry weight of 344 lb (156 kg).