Aero Elements
- Spoiler: 8” x 61”
- Splitter: 2” overhang, 10.5” wings at ends of splitter (near tires)
- Radiator pan: 37” in front tapered to 31” with vertical fences
- Aero ducts: Used at majority of oval tracks larger than 1 mile
Engine Elements
- 750 HP: 1.17” tapered spacer (Used at short tracks and road courses)
- 550 HP: 0.922” tapered spacer (Used at oval tracks larger than 1 mile)
Misc.
- Enhanced vehicle chassis mandatory at all tracks (previously announced)
- Adding 3 long block engine seals in points races. These are in addition to the 13 short block seals introduced this season.
- 25% reduction in testing (3 organizational tests, down from 4; 3 teams at each Goodyear test, down from 4).
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