GFB HYBRID TMS Dual Port 98-04 Subaru Forester XT Suspension>Sway Bar Brackets Aftermarket downpipes that affect emissions

Aftermarket downpipes that affect emissions devices are for racing use only

or up to 100hp NO2

Flow makes power

With a lifetime warranty and 60-Day Ride Satisfaction Guarantee -- not to mention the Air Lift reputation for great customer service and technical support

Perfect fit and finish

GFB HYBRID TMS Dual Port 98-04 Subaru Forester XT Suspension>Sway Bar Brackets Aftermarket downpipes that affect emissionsThe Hybrid valve is back! In 1999, GFB's first Hybrid valve pioneered the dual port design, which was so successful the technology has since been adopted by most other brands. By "staging" the two venting outlets, at low valve lifts most of the air is recirculated. As the car is driven harder, the valve opens further and more of the atmosphere venting port is exposed for a louder sound