or may provide an unfair advantage. The series' cars have a large top mounted wing with sideboards that face opposite directions to help produce a great amount of downforce to help the car turn and maximize grip, both in the corners and on the straightaways. The cars also have smaller wings on the nose to provide more downforce to the front wheels. Sprint cars use "quick change" rear ends. This allows the teams to quickly change the gear ratio for different size tracks. Most cars use a torsion bar suspension system. Different size bars either soften or stiffen the suspension. Torsion bars, and specialty shock absorbers are the key ingredients in the handling of sprint cars. That coupled with the wings, tire stagger, light weight, and enormous horsepower make these cars some of the fastest race cars in the world. The monstrous power-to-weight ratios of Sprint Cars can exceed that of Formula 1 cars in the right circumstances. Sprint Cars have a very distinct stance since they have two very different sized rear tires. The right rear tire on a sprint car is 105 inches in circumference. In contrast, the left rear tire is only between 90 and 98 inches in circumference, depending on the track size and conditions. The difference in the tire sizes is called stagger. The more stagger the car has, the sharper the car can turn, but at the expense of straight line speed. Sprint cars do not have starters, so push trucks are used to push the cars to start the engines. Sprint Cars only have an in/out direct drive with a fixed gear ratio, no reverse gear and no clutch. Typical race night program Motor Heat & Wheel pack Hot laps (practice laps) Time trials (time trials or qualifying, usually two laps with the fastest lap being the qualifying time) Heat races (set based on qualifying time) Toyota Dash (sets the top three or four rows of the fastest cars for the A-main) Last Chance Showdown (B-Main, C-Main or D-Main depending on car count) Feature (A-Main, which can be anywhere from 25 to 55 laps) Past Champions Source: Top 25 all-time A-Feature winners Note: Includes all full-field preliminary race wins. Those with a yellow background indicates Knoxville National winners. Updated August 31, 2022. World of Outlaws Kevin Gobrecht Rookie of the Year Source: Popular Events Here is a list of top paying and more