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GFB - Go Fast Bits

Go Fast Bits EX Series External Wastegates

Regular price $328.50 USD
Regular price $369.99 USD Sale price $328.50 USD
Sale Sold out

Go Fast Bits (GFB) EX Series External Wastegate

Choose Size (38mm, 44mm, 50mm)

When It Comes To External Wastegates, Some Things You Want Big, Others You Want Small – Like Big Flow, Small Size, Right? GFB Offers A Range That Are Among The Most Compact External Wastegates In Their Class, Being Shorter In Height Than Their Closest Rivals Without Sacrificing Flow.

All GFB wastegates feature an investment cast body made from 253MA chromium-nickel stainless steel, a CNC machined billet stainless valve, and all stainless steel weld-on fittings and hardware, whilst the diaphragm is nomex-reinforced silicone. All this adds up to a wastegate built to handle extreme conditions with reliability you can trust!

Most compact wastegate range on the market

Body, valve, seat and all hardware is CNC machined from high-temp stainless steel

Actuator housing CNC machined from billet 6061 aluminum

Nomex-reinforced silicone diaphragm

Internal shroud protects valve stem from excessive heat and prevents sticking

V-band clamp mounting system

Made in Australia under ISO 9001


EX38 (38mm), EX44 (44mm), and EX50 (50mm):

Features a stainless steel valves and come standard with a 10psi spring. Additional springs are also available – by using various combinations of 5psi, 7psi, and 10psi springs, you can achieve base boost pressures of 5, 7, 10, 12, 15, 17, and 22psi*.

Other GFB-Go Fast Bits Products available for any chassis/engine - if you don't see what you’re looking for please message us directly.

We shop our competition - if you find a lower comparable price we will match or beat it - message for details!

PROPOSITION 65 WARNING: These products may contain chemicals known to the State of California to cause birth defects or other reproductive harm. For more information visit