Tein Street Advance Z Coilover Suspension Kit - Mark X GRX130 additional_image Authorize K is Fujitsubo's Kei

Authorize K is Fujitsubo's Kei car specific exhaust series that combines style

and has a swan-neck shape that provides the best aerodynamic effect for high-power vehicles

Perfect for your Mazda RX-7

2 x Trigger Inputs (Reluctor

making them the perfect choice for constructing or replacing an exhaust system

Tein Street Advance Z Coilover Suspension Kit - Mark X GRX130 additional_image Authorize K is Fujitsubo's KeiMuch 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.