Tein Street Advance Z Coilover Suspension Kit - BRZ ZC BOV's & Wastegates but the main ones are

but the main ones are to decrease engine bay temperatures and to speed up the exhaust gas flow

Genuine Honda: Opening temp 80C / Full open temp 90C

Each system is constructed from high quality stainless steel and finished with carefully chosen tip designs to complement the application vehicle

limiting the output

methanol or nitrous injection

Tein Street Advance Z Coilover Suspension Kit - BRZ ZC BOV's & Wastegates but the main ones areMuch like Tein Street Basis, Street Advance utilises a twin tube system and has adjustable lowering spring seats allowing you to adjust ride height. Unlike Street Basis, it also features adjustable damping force, allowing you to effectively change your handling characteristics. Compared to mono tube suspension, Street Basis is twin tube, meaning it attains a longer stroke with a smaller repulsive force, resulting in excellent high ride comfort.