Article C4.3.1
Ballast General
Technical Regulations
Article C4.3.1
Ballast General
Chapter: C4
In Simple Terms
Teams can add weight to their cars to meet minimum weight requirements, but it must be securely bolted down and cannot move. The ballast must be designed so that even if one bolt breaks, the weight won't fly around the cockpit during extreme forces like a crash.
- Ballast must be secured with tools (bolts/fasteners) and cannot shift relative to the car's suspension
- Teams must prove through calculations that cockpit ballast stays in place even if one fixing fails under 100g acceleration forces
- Seals can be applied to ballast fasteners for technical inspection purposes
Official FIA Text
Ballast can be used if secured requiring tools for removal and remaining immobile with respect to Sprung Mass. Must be possible to fix seals if necessary. Teams must show by calculation that ballast in cockpit retained if any one fixing removed and subjected to 100g acceleration in any direction.
ballastweightsecuredcockpit safety100g acceleration
2026 Season Regulations