League: NASCAR Sport: Motorsports Country: United States Category: General

NASCAR allows rear spring adjustments for O'Reilly series at Darlington

Motorsport.com • 1 min read • Latest: Sep 5, 2026, 7:21 PM

Last updated Sep 5, 2026

NASCAR allows rear spring adjustments for O'Reilly series at Darlington

Summary

NASCAR has updated the list of permissible mechanical changes for NASCAR O’Reilly Auto Parts Series teams during practice sessions. Beginning this weekend at Darlington Raceway, crews are authorized to adjust rear springs on their vehicles. This change marks a departure from the restricted adjustment list that has been in effect since the onset of the Covid-19 pandemic. The condensed practice schedules implemented during that time previously prohibited teams from modifying many specific parts while on track. By expanding these allowances, NASCAR provides crews additional flexibility to dial in vehicle setups during limited practice windows. Teams will look to utilize this expanded scope to improve car handling ahead of upcoming competition.

Source Links

Motorsport.com

Key Details

•NASCAR O’Reilly Auto Parts Series teams may adjust rear springs during practice.
•The change takes effect this weekend at Darlington Raceway.
•Previous rules limited adjustment options due to practice sessions being condensed.
•Practice constraints were originally established during the Covid-19 pandemic.

Latest Updates

7:21 PMMotorsport.com — NASCAR expands adjustments that O'Reilly teams can make in practice

What they're saying

"
NASCAR is expanding practice adjustments for NASCAR O’Reilly Auto Parts Series teams at Darlington Raceway this weekend by adding rear springs to the list of allowed changes during practice. NASCAR teams have a limited list of adjustments that are allowed during practice sessions and since practice was condensed during the Covid-19 pandemic, that list has prevented most parts from being ...Keep reading
— Motorsport.com

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NASCAR Motorsports