Tein Street Advance Z Coilover Suspension Kit - Civic EK9 Sensors & Switches K&N’s replacement air filters are

K&N’s replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration

Used for extra reliability at high RPM in SR engines

paired with Skunk2’s unique design specs

its capable of withstanding engine vibration which could lead to the OEM plastic part breaking

Tein Street Advance Z Coilover Suspension Kit - Civic EK9 Sensors & Switches K&N’s replacement air filters 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.