GFB HYBRID TMS Dual Port 03-09 Subaru Legacy GT Exhaust- Mufflers & Tips>Exhaust Valve Controllers combine with the Derringer inline

combine with the Derringer inline tuner for a total gain of 81 hp

large 9" Tall conical flat top 360 degree radial flow performance air filter with 3-layers of progressive finer porosity synthetic media providing maximum convenience

Exedy OE 1989-1990 Geo Prizm L4 Clutch Kit

Fabtech 00-04 Ford F250/350 4WD Rear Leaf Spring Block Kit - 5in

spring spacers

GFB HYBRID TMS Dual Port 03-09 Subaru Legacy GT Exhaust- Mufflers & Tips>Exhaust Valve Controllers combine with the Derringer inlineThe 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