Tein H Tech Springs Civic Si (2006-2011) Mercedes Borla's XR-1 catback exhaust for

Borla's XR-1 catback exhaust for the Subaru WRX/STI features 3" piping with Borla's patented XR-1 multi-core muffer for optimal flow

Unlike many other brands

PERRIN Fuel Rails are anodized with a black finish for corrosion protection

both intercoolers were seeing similar Pre-IC temperatures on each run (180-190F peak)

Tein H Tech Springs Civic Si (2006-2011) Mercedes Borla's XR-1 catback exhaust forTein H. Tech springs for the Honda Civic Si utilize the latest spring and material technology to optimize comfort, performance, and quality. Designed and tested in North America to be used in conjunction with OEM or similar shocks for excellent ride comfort and slightly increased handling. The line is produced with Vanadium (SAE9254V), which is durable, lightweight, and has properties to retain more spring stroke. H. Tech springs are designed for