GFB-5603 Blow Off Valve Trumpet

GFB-5603 Blow Off Valve Trumpet – High Performance BOV Sound & Protection

Upgrade your turbo system with the GFB-5603 Blow Off Valve Trumpet, designed to enhance both performance sound and durability. Manufactured by Go Fast Bits, this premium BOV accessory delivers a louder, sharper vent-to-atmosphere sound while protecting your valve from harmful debris.

Perfect for enthusiasts chasing that aggressive turbo flutter, the GFB-5603 trumpet is engineered to suit a wide range of GFB blow-off valves, making it a must-have upgrade for street and track builds.

🔧 Key Features & Benefits

• Enhanced Blow-Off Sound – Produces a louder, more aggressive venting noise
• Filter Mount Compatible – Designed to accept a 38mm (1.5″) filter for added protection
• Debris Protection – Helps prevent dust, dirt, and contaminants entering your BOV
• High-Quality Construction – Built to withstand harsh engine bay conditions
• Easy Installation – Direct fit for compatible GFB valves

🚗 Compatibility

The GFB-5603 trumpet is compatible with a wide range of GFB valves including:

• SXV Blow Off Valves
• Respons Series
• Deceptor Pro II
• Hybrid & Mach 2 valves

Ideal for turbocharged petrol engines running atmospheric or hybrid BOV setups.

⚙️ Why Choose the GFB-5603?

If you’re running a vent-to-atmosphere blow-off valve, exposure to dirt and debris can reduce performance and lifespan. The GFB-5603 solves this by allowing you to run a protective filter setup without sacrificing sound.

This makes it perfect for:

• Street cars in dusty environments
• Track builds needing reliability
• Performance enthusiasts wanting louder turbo sound