A compact, economical open-wheel class with a very high power-to-weight ratio, built as an accessible entry point into speedway. Most run a 1000cc motorcycle engine (Yamaha, Suzuki or Kawasaki), though production car engines — most commonly the Suzuki Swift G13b — are also used, on a chrome-moly chassis and methanol fuel. Despite their size they're seriously quick — capable of lap times within a few seconds of Sprintcars and V8 Dirt Modifieds — making them one of speedway's best value-for-money categories.