Complete Manta exhaust system, available as a “cat-back” system, replacing the last two pieces of the standard exhaust system, or as a full system, including a set of extractors.

SKU: mantagutb45 Category:


As many 4.5L petrol GU Patrol owners have found, the best way to improve their car overall, is by fitting the full Manta exhaust kit to their vehicle.

The 4.5L naturally aspirated petrol motor in the GU Patrol was available from 1998 until 2001, when the bored-out 4.8L motor was rolled out. Although the 4.5L is very reliable, power and torque leaves a little to be desired, and it has rather heavy fuel consumption. Therefore many owners look for ways to improve the power and economy of their vehicle. An easy way to do this, is to fit the Manta 2.5″ exhaust.

This mandrel bent, high flow system replaces the entire standard exhaust system (a high flow extractor replaces the standard cast manifold) to give you better sound, and much more flow. This leads to increased performance, as the engine is able to operate much more efficiently.

The twin muffler setup used ensures that there is no drone inside the cabin, although the system does give the car a lovely deep sounding exhaust tone when heard from outside. The exhaust is also available as a “cat back” system, replacing the last two parts of the factory exhaust for those just chasing an improved engine sound.



Established in 1974, Manta is now Australia’s premier manufacturer of performance exhausts. Celebrating 40 years of experience, they have the expertise to build exhaust systems that are world-class. From humble beginnings as a small exhaust shop, they now boast two dedicated locations from which they can manufacture and wholesale an extensive range of exhausts for street, off-road, and race vehicles.

The team at Manta combines more than 90 years of experience in the performance exhaust industry, engineering and developing Australia’s leading performance exhaust systems. Manta manufacture and wholesale a range of exhausts that boasts a distinctive sound and perfect fitment. With worldwide sales and distribution capabilities, Manta provides quality Australian made performance exhausts to enthusiasts all over the world.

Ongoing investment in research and development, together with the implementation of cutting-edge manufacturing techniques, ensures that they stay at the leading edge of exhaust design and manufacturing. The integration of CNC technologies into production lines ensures their products cement their place as market leaders.

Additional information

Weight 300 kg


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