GFB HYBRID TMS Dual Port Silvia/200SX S14/S15 - T9204 7/16"-20 Inverted Flare 1996:GMC:C2500:Sierra SLE

1996:GMC:C2500:Sierra SLE

and surprisingly light weight

bearing clip

and SSI-4 PLUS

Tru-Time cam gears enable users to match cam timing with their vehicle's tuning state by advancing or retarding the cam profile(s) in one-degree increments via true laser-etched markings

GFB HYBRID TMS Dual Port Silvia/200SX S14/S15 - T9204 7/16"-20 Inverted Flare 1996:GMC:C2500:Sierra SLEThe 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 the Hybrid is a dual outlet valve for combined recirc and