Porsche 971 Panamera Turbo / Turbo S XperTune Performance Software (2017+) hawk ceramic these tethers allow greater side-to-side

these tethers allow greater side-to-side head movement while maintaining full frontal protection

Designed for Formula 1 racing

330mm diameter is perfect for most sports cars

respectively

Porsche 971 Panamera Turbo / Turbo S XperTune Performance Software (2017+) hawk ceramic these tethers allow greater side-to-sideXperTune Performance software upgrade improves horsepower, torque, and driving characteristics by reprogramming various sensor inputs, air fuel ratios, and boost pressure (if applicable). Achieve maximum power without sacrificing driveability or reliability by optimizing the engine's performance. Greatly enhances the power and dynamic performance and driveability of this wonderful vehicle. NOTES: While a vehicle equipped with bolt on upgrades will