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Hurricane Headers HU068ST – Mitsubishi Sigma 1.8L 2.0L 2.6L Astron 1977–1988
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Mitsubishi Sigma 1.8 2.0 2.6 Astron 1977–1988 Hurricane Headers HU068STM

$665.00
Tax included

Hurricane Headers HU068ST – Mitsubishi Sigma 1.8L 2.0L 2.6L Astron 1977–1988

Hurricane HU068ST performance headers are designed for selected Mitsubishi Sigma models from 1977 to 1988 fitted with 1.8L, 2.0L and 2.6L Astron petrol engines.

Featuring an interference-design header with large 1.75" primary pipes, 2.00" secondary pipes and a 2.00" outlet, HU068ST is suitable for standard and modified engines where improved exhaust flow and engine breathing are required.

Australian made using mandrel-bent pipework and Hurricane's performance collector design.

Best Mufflers provides expert advice and fast shipping Australia-wide.

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Hurricane Headers HU068ST – Mitsubishi Sigma 1.8L 2.0L 2.6L Astron 1977–1988

Hurricane HU068ST exhaust headers are designed for selected Mitsubishi Sigma models manufactured from 1977 to 1988 and fitted with 1.8L, 2.0L or 2.6L Astron petrol engines.

The HU068ST uses an interference-design header layout suitable for both standard and modified engines. Large mandrel-bent primary and secondary pipes help improve exhaust gas flow compared with the restrictive original exhaust manifold, supporting improved throttle response and engine performance.

Key Features

  • Australian made Hurricane performance headers
  • Designed for selected Mitsubishi Sigma models
  • Suits 1.8L, 2.0L and 2.6L Astron engines
  • Interference design for standard and modified engines
  • Mandrel-bent pipework
  • Large 1.75" primary pipes
  • 2.00" secondary pipes
  • 2.00" collector outlet
  • Designed to improve exhaust flow and engine breathing

Vehicle Fitment

  • Make: Mitsubishi
  • Model: Sigma
  • Year Range: 1977–1988
  • Engine Capacity: 1.8L / 2.0L / 2.6L
  • Engine Family: Astron
  • Fuel Type: Petrol

Header Specifications

  • Part Number: HU068ST
  • Brand: Hurricane
  • Header Design: Interference
  • Primary Pipe: 1.75" (44.5mm)
  • Secondary Pipe: 2.00" (50.8mm)
  • Outlet: 2.00" (50.8mm)
  • Construction: Mandrel-bent mild steel
  • Manufacture: Australian Made

Hurricane Collector Design

Hurricane headers use a collector arrangement where the secondary pipes do not protrude unnecessarily into the collector cone. This helps maintain a smoother exhaust gas path through the collector and reduces unwanted restriction.

Selected Hurricane header designs also incorporate merge-style collector features to help improve exhaust gas transition and scavenging through the collector outlet.

Fitment Notes

Fitment should be confirmed against the vehicle's engine, transmission, steering arrangement and existing exhaust system before installation.

Vehicles within this broad 1977–1988 production range may have differences in engine and exhaust configuration depending on model and build date.

Lubricate exhaust manifold studs and fasteners with a suitable penetrating lubricant before removal. Take care with older cylinder-head studs and nuts, as corrosion and heat cycling can make removal difficult.

Professional installation by an experienced exhaust workshop is recommended.

What's Included

  • 1 x Hurricane HU068ST Performance Header Assembly

Recommended With

  • New cylinder-head exhaust gasket
  • New flange gasket where required
  • Replacement exhaust studs, nuts and mounting hardware where required
  • Suitable 2.00" exhaust system or custom connection pipe

Why Good Headers & Exhaust Systems Matter

A correctly designed header system helps exhaust gases leave the engine more efficiently, reducing unnecessary restriction and improving cylinder scavenging, throttle response and usable engine performance.

Warranty & Compliance

Hurricane headers are manufactured for performance and replacement applications and are covered against manufacturing defects subject to supplier warranty terms and conditions.

For later vehicles within this application range, verify emissions and registration compliance in your state or territory before installation, particularly where original emissions equipment may be affected.

FAQ

What Mitsubishi Sigma engines do HU068ST headers suit?
HU068ST is designed for selected Mitsubishi Sigma models fitted with 1.8L, 2.0L and 2.6L Astron petrol engines.

What size are the header pipes?
The HU068ST uses 1.75" primary pipes, 2.00" secondary pipes and a 2.00" collector outlet.

Are these headers suitable for modified engines?
Yes. Hurricane specifies the HU068ST interference design for both standard and modified engine applications.

Are these headers Australian made?
Yes. Hurricane performance headers are Australian made.

Will these bolt directly to my existing exhaust?
The cylinder-head fitment is designed for the applicable engine, but the connection to the remainder of the exhaust should be checked before installation. Some vehicles may require exhaust fabrication or modification depending on the existing system.

Can I pick up from the store?
Yes. Pick up is available but must be pre-arranged before collection.

How much is freight?
Freight varies depending on your delivery location and where stock is available. Please contact us for freight charges before ordering. Where possible, we can arrange dispatch from the nearest available product location to help reduce freight costs and delivery times.

Do you ship to the USA?
Yes. Best Mufflers regularly ships exhaust systems and exhaust parts to customers throughout the United States.

Please note that import duties, tariffs, taxes, and customs clearance fees are not included in the product or shipping price. Once your order is processed and the applicable charges are calculated, we will send you a secure payment link to finalise the import duties and tariff charges before dispatch.

Customer Support

For phone orders, advice, or part enquiries – contact us:

📞 Call Now: +61 2 9547 3511 ✉️ Email Us

🇦🇺 Best Mufflers
87A Planthurst Road, Carlton NSW 2218, Australia
Exhaust Systems Since 1983
Workshop hours: Mon–Fri 8:00am–5:00pm (By Appointment Only) | Phone and email enquiries welcome 24 hours

HU068STM