911 Turbo

Name: Fabspeed Porsche C2 TURBO, 965, 964Turbo Muffler Bypass IMSA Zork Tube (1990-1994)
Brand: Fabspeed
SKU: FS.POR.964T.ZMB

964Turbo1990–1994

Muffler Bypass IMSA Zork Tube

Pricing

Priced on consult

inc GST & import · fitment confirmed before dispatch

Muffler Bypass IMSA Zork Tube for the Porsche 911 C2 Turbo / 964 Turbo / 965 (1990-1994), a replica of the Porsche Motorsport 934's late-1970s single-turbo IMSA exhaust pipe. Expect crackles, pops, and aggressive turbo spooling sounds, with a massive, near-instant onset of boost that lifts torque and power across the whole rev range, adding 46whp and 88.1 Nm of torque. Built from 3.0in (76mm) tubing with an integrated, angle-cut adjustable outlet, it installs in under an hour: four hex nuts attach the Zork tube to the turbocharger, with a slip joint to adjust and aim the exhaust under the rear bumper. It swaps quickly with the OEM catalytic converter, so the same car can go from emissions-compliant street use to race trim and back.

SKU FS.POR.964T.ZMBPorsche 911 Turbo (964) · 1990–1994

Frequently asked

Does the Muffler Bypass IMSA Zork Tube fit my 911 Turbo?

This listing is specific to the Porsche 911 Turbo (964). Exact fitment for your year, trim and options is confirmed on your free consult before anything is ordered.

What does the price include?

The delivered price includes the part from Fabspeed USA, freight to Australia, import costs and GST. Enter your postcode to refine delivery; the final figure is confirmed on consult.

How long until it arrives?

Every Fabspeed part is made in-house at Fabspeed USA with about a one-week production lead time, then allow another 3-4 days for delivery to Australia via UPS. That freight is already included in the price.

How much power does this add?

Fabspeed's dyno testing showed gains of 46whp and 88.1 Nm of torque.

Can I switch between street and track use?

Yes, it swaps quickly with the OEM catalytic converter, so you can run emissions-compliant on the street and fit the Zork tube for track days.

How long does installation take?

Less than an hour; four hex nuts attach it to the turbocharger, with a slip joint to adjust and aim the outlet.

Who installs it?

Rennen Motorsport in Adelaide, or an authorised dealer near you. Fitting it yourself may also be an option depending on the part, so raise it on your consult; professional installation is quoted separately.

Is it covered by warranty?

Fabspeed products carry the manufacturer's warranty, supported locally through Rennen Plus as the Australian principal. See our returns policy.

Can I just buy this outright, or do I need to talk to someone first?

Every enquiry, whether it's one part or a full build, starts with a free consult. We confirm the exact spec for your car before anything is quoted or ordered.

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