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  • GFB Whistling Trumpet

    GFB Whistling Trumpet

    $54.90

    GFB Whistling Trumpet

    GFB have released the Whistling Trumpets (part # 5701), which emitted a piercing screech when driving aggressively. Unfortunately for a number of GFB owners, the 5701 trumpet only worked with some valve types.

    For the owners of all other types of GFB valves, GFB have now released the 5702 – a modified version of the Whistling Trumpet that is designed to work on low boost applications where the 5701 doesn’t cut it.

    Select options This product has multiple variants. The options may be chosen on the product page
  • -10%

    GFB Mach 2 Diverter Valve / BOV

    $287.10 – $553.50
    GFB MACH 2 Diverter Valve / BOV
    Using GFB’s TMS technology the Mach 2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears (more information below).
    Select options This product has multiple variants. The options may be chosen on the product page