Superstocks (previously known as A Grade Stockcars) are a premier class of New Zealand speedway (dirt track racing). Cars have strong roll cages designed to protect the drivers. Superstocks weigh 1400 to 1500 kg and are usually powered with modified V8 engines of up to 248 cubic inches. Contact between cars can be rugged and is intended as part of the class.
Cars are purpose built by numerous different builders throughout the country.
- Rees Race Cars
- Murray Gordge
- Graeme Barr Motorsport
- Podjursky Tanks
Superstocks usually run engines such as
- Toyota VVTI V8
- Nissan VK56 V8
- Nissan VH41 V8
- Ford V8
- Chevrolet V8
- Jaguar V8
Cars come in all different shapes and designs, varying from the ever-popular and successful Gordge chassis, through to the 'Tank" popularized by Dave Evans.
Superstocks compete in individual championships nationwide, including:
- New Zealand Superstock Championship
- World 240 Invitational Superstock Championship
- New Zealand Superstock Grand Prix
- North/South Island Superstock Championship
- Battle of the Stocks
These championships are seen as the major events, and the big ones to win. Numerous other events are run throughout the country, ranging from track championships through to series run over a number of meetings.