GFB HYBRID TMS Dual Port 20mm Inlet/20mm Outlet 97-05 VW Golf GTI 1.8T Shift Boots 8L (BP) DOHC 1990-2005

8L (BP) DOHC 1990-2005

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662in Bore 11:1 CR Platinum Piston - Single

1999-2004 Ford Mustang GT 1995 Ford Mustang GTS 1994-1997

GFB HYBRID TMS Dual Port 20mm Inlet/20mm Outlet 97-05 VW Golf GTI 1.8T Shift Boots 8L (BP) DOHC 1990-2005ALL THE PERFORMANCE WITH THE NOISE! The 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. As a benefit, this system