Tein Street Advance Z Coilover Suspension Kit - Impreza GDA(A/B) PRL Motorsports It replaces the stock cast

It replaces the stock cast aluminum or plastic tube with an oversized

this prevents the frame from flexing

Set your boost and forget it

Purpose-built for the FK8 Type R

for JDM/AUDM/SADM/EURO markets

Tein Street Advance Z Coilover Suspension Kit - Impreza GDA(A/B) PRL Motorsports It replaces the stock castMuch 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.