40MM HKS STYLE 4-BOLT STAINLESS STEEL WASTEGATE DUMP TUBE

PERFORMANCE EXHAUST ROUTING | T304 STAINLESS STEEL | TIG-WELDED FLANGE | TURBOCHARGED APPLICATIONS

Premium 40mm External Wastegate Dump Pipe

Upgrade your turbocharged exhaust system with the XS-POWER Relentless Tuning 40mm HKS-style wastegate dump tube, engineered for performance-oriented turbo installations using a compatible 40mm four-bolt external wastegate connection.

Manufactured from T304 stainless steel, this turbo wastegate exhaust dump pipe features mandrel-bent tubing and a TIG-welded machined mounting flange for durable construction and smooth exhaust gas routing.

Designed for custom turbo systems, race vehicles, modified engines, and performance exhaust fabrication, this external wastegate dump tube directs discharged exhaust gases away from the wastegate outlet and toward a selected exhaust exit location.

Whether you are assembling a custom turbo manifold, upgrading an external wastegate exhaust outlet, or fabricating a wastegate recirculation system, this stainless steel dump tube provides a practical starting point for your performance build.

Performance Specifications at a Glance

High-Performance Features and Benefits

T304 Stainless Steel Construction

High-quality stainless steel construction provides corrosion resistance and durability for demanding turbo exhaust environments. Suitable for properly engineered performance exhaust installations.

Mandrel-Bent Exhaust Tubing

Computer-controlled mandrel bending helps maintain a consistent tube profile through the bend, supporting smooth exhaust flow through the wastegate discharge passage.

TIG-Welded Machined Flange

A machined four-bolt mounting flange and TIG-welded construction provide a robust connection for compatible HKS-style 40mm external wastegate applications.

Custom Turbo Exhaust Routing

Routes wastegate exhaust gases away from the wastegate outlet. Final discharge location must be selected and fabricated to avoid heat-sensitive components, wiring, hoses, and vehicle occupants.

Open Dump or Recirculated Exhaust Fabrication

This pipe can serve as a starting point for an open wastegate discharge arrangement where permitted, or for a custom recirculated wastegate exhaust system with additional properly fabricated tubing and connections.

Race and Performance Applications

Ideal for performance builders working with custom turbochargers, aftermarket turbo manifolds, external wastegate exhaust systems, and modified forced-induction engines.

Technical Specifications

Wastegate Compatibility and Vehicle Applications

This dump tube is designed for turbo systems equipped with a compatible 40mm HKS-style four-bolt external wastegate. Compatibility is determined by the wastegate outlet flange, bolt pattern, pipe clearance, and exhaust routing requirements.

Common Custom Turbo Build Categories

• Honda and Acura custom turbocharger systems
• Toyota Supra and custom 2JZ turbo exhaust fabrication
• Nissan and Infiniti aftermarket turbo builds
• Mitsubishi and Subaru custom forced-induction systems
• BMW and European aftermarket turbo conversions
• Universal race-car and performance exhaust fabrication
• Custom turbo manifolds with compatible external wastegate outlets

Vehicle names above describe potential custom-build applications only. They do not indicate confirmed bolt-on fitment. Modification or additional fabrication may be necessary.

Installation and Exhaust Fabrication Notes

• Verify flange and bolt-pattern compatibility before installation.
• Use appropriate high-temperature gasket and mounting hardware.
• Inspect clearance around hoses, wiring, brake lines, fuel lines, and body panels.
• Ensure the wastegate exhaust outlet is routed safely away from occupants and sensitive components.
• Additional welding or exhaust tubing may be required for recirculated installations.
• Use appropriate heat shielding and exhaust supports where required.
• Check for exhaust leaks after installation.
• Professional installation and fabrication are strongly recommended.

Package Includes

• 1 x XS-POWER 40mm HKS-style stainless steel wastegate dump tube
• 1 x Wastegate flange gasket

External wastegate, turbocharger, manifold, mounting hardware, additional exhaust tubing, and installation instructions are not included unless expressly stated elsewhere in the product offer.

XS-POWER Turbo Performance Parts - Worldwide

XS-POWER supplies aftermarket turbocharger and exhaust performance components to enthusiasts, engine builders, performance workshops, and custom fabrication specialists around the world.

Our performance product range supports custom turbo systems, external wastegate installations, turbo manifolds, stainless exhaust fabrication, and modified forced-induction applications.

Worldwide Shipping Available - USA, Canada, United Kingdom, Europe, Australia, New Zealand, Japan, and International Markets.

Frequently Asked Questions

Will this fit any 40mm wastegate?

No. This pipe is intended for compatible HKS-style four-bolt 40mm external wastegate connections. Other 40mm wastegates may use different flange designs or bolt spacing.

Is this a direct-fit Toyota Supra or Honda part?

Not necessarily. It can be used in certain custom turbo builds when the wastegate flange and installation clearances match. Additional fabrication may be required.

Can this dump tube be welded into my downpipe?

Yes. A qualified exhaust fabricator may use additional compatible tubing and appropriate welding procedures to create a custom recirculated wastegate exhaust arrangement.

Does a wastegate dump tube increase horsepower?

A dump tube primarily routes exhaust discharged by the external wastegate. It does not independently guarantee additional horsepower or boost. System performance depends on the entire turbocharger, wastegate, manifold, and exhaust configuration.

Is professional installation recommended?

Yes. Correct flange fitment, safe exhaust discharge routing, heat management, and leak-free installation are important for reliable operation.