Bilstein B12 (Pro-Kit)-Suspension Kit (46-189608) 1569 Includes off-road tune options for

Includes off-road tune options for vehicles without catalytic converters

Replaces the restrictive factory catalytic converters with a straight-through "straight-pipe" design for maximum power and exhaust sound

Each component is meticulously inspected to ensure fitment and quality

06-11 Honda Civic Si throttle bodys can be bolted onto the new Ultra Race Series intake manifold

The AEM 21-8032DS Brute Force Air Intake System produces horsepower and torque gains by replacing the vehicles restrictive factory air filter and air intake housing

Bilstein B12 (Pro-Kit)-Suspension Kit (46-189608) 1569 Includes off-road tune options forBilstein B12 (Pro Kit) suspension kits are a complete set of B8 Performance Plus dampers paired with Eibach (Pro Kit) springs that provide moderate lowering between 24 40mm (depending on application). These kits offer dampers and springs that are tuned for each specific application to provide the best fixed height lowering solution. Bilstein B12 (Pro Kit) suspension kits provide the perfect combination of suspension dynamics, quality and aesthetics.