Subaru WRX/STI 97-98 35mm In / 30mm Out HYBRID TMS [T9235]

The Hybrid is Back!

Celebrating 20 Years of the World’s First Dual-Port Blow-Off Valve

In 1998, GFB revolutionized the turbo world with the Hybrid, the first-ever dual-port BOV—designed to solve stalling and backfiring issues on MAF-equipped cars while still delivering that signature blow-off sound.

Now, to celebrate 20 years of innovation, the Hybrid is back! Updated with configurable venting options—full recirc, full atmosphere, or 50/50—and available in direct bolt-on kits for popular vehicles.

A piece of history, built for today’s performance. Get yours now!

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