Go Fast Bits EX38 38mm External Wastegate. 

GFB External Wastegates: Compact, High-Flow Performance You Can Trust

When it comes to external wastegates, size matters—but in different ways. You want big flow for maximum performance, but a small, compact design for easy fitment. That’s exactly what GFB delivers. Their wastegates are among the most compact in their class, standing shorter than their closest competitors without compromising on flow.

Engineered for Extreme Performance

GFB wastegates are built to withstand the harshest conditions with premium materials and precision engineering:

✅ Durable Stainless Steel Construction – Investment-cast body made from high-temp 253MA chromium-nickel stainless steel, with a CNC-machined billet stainless steel valve and weld-on fittings.
✅ Reinforced Diaphragm – High-strength Nomex-reinforced silicone diaphragm ensures long-lasting durability under extreme heat and pressure.
✅ Precision Machining – The actuator housing is CNC-machined from billet 6061 aluminum, combining strength with lightweight efficiency.
✅ Reliable Performance – An internal valve shroud protects the valve stem from excessive heat and prevents carbon buildup, reducing the risk of sticking.
✅ Quick & Secure Mounting – V-band clamp system for fast and easy installation.
✅ Proudly Made in Australia – Manufactured under strict ISO 9001 quality standards.

Why Choose GFB External Wastegates?

With a compact footprint, industry-leading flow efficiency, and premium construction, GFB external wastegates offer the ultimate combination of performance, durability, and reliability. Whether you’re chasing horsepower gains or ensuring precise boost control, GFB wastegates are engineered to deliver under pressure.

Upgrade to a GFB external wastegate today and experience next-level boost control with uncompromising quality! 🚀🔥

Specific Product Info:

The EX38 features a 38mm valve and comes 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*.

Standing only 93mm tall, the EX38 is shorter than its nearest rival. The inlet flange I.D. features a tapered entry to assist a smooth transition from the exhaust pipe into the valve, and the seat I.D. is larger than other wastegates of the same size for extra flow.

The EX38 is directly compatible with TiAl MV-S flanges, meaning you can use the EX38 on turbo kits designed for TiAl wastegates