During a meeting between lead engineer Tom and driver Christina, engineer Max states that he has finally read the rules and found a legal way to save weight. What suggestion could Max have made?

1. Design a new helmet for Christina that reduces driver gear weight by 0,450 kilograms.
2. Design a new scatter shield to protect their non-metallic chain from 2mm Aluminium. This saves 120 grams
3. Replacing the aluminium brake pedal with a shiny titanium version that saves 0,14kg
4. Replacing the shoulder belts with new 40mm belts that also suit Christina's HANS device and saves 83 grams