A very common question we are asked by our customers is "What is the difference in RoughTrax premium exhaust quality to others?" Well, let us explain;
TMA is the largest independent manufacturer of quality exhausts in the UK. With full ISO 9001 approval on the quality manufacturing system, and Type Approval on Selected ranges, TMA Exhausts has earned a reputation in both aftermarket and OEM markets for excellent quality and value for money.
Based in Manchester, TMA has a 60,000 sq. ft. manufacturing facility. TMA's knowledgeable and dedicated team offers clients continued, personal commitment to excellence and have great pride in the products they manufacture.
Every exhaust manufactured for RoughTrax by TMA is matched exactly with the original Genuine Toyota exhaust. RoughTrax actually purchase Genuine Toyota exhausts which then TMA cut open to view the internals and specifications of each exhaust to match everything like for like to create an A2A equivalent.
They are later tested and approved to the Original Equipment requirements, TMA's manufacturing excellence is able to offer complete customer satisfaction wherever and whenever it is required. With regard to PPM defect rates they operate at world class levels.
Who is the manufacturer?
The manufacturer for RoughTrax premium exhausts are A2A Exhaust Specialists, A2A stands for Air 2 Air and is a brand name for TMA, their strap line is "OE in everything but name".
A2A Exhaust Component Breakdown
A2A Exhaust Silencer Muffle Internals

A2A Exhaust system comparison against competitors
Below are test results provided by TMA comparing an A2A exhaust silencer with a competitor’s equivalent.Brand | ![]() |
Competitor |
System Fit |
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Sound Readings |
Noise at idle: 58.8D Noise at 3000RPM: 74.1DB Cockpit noise: 41.5DB |
Noise at idle: 60.2DB Noise at 3000RPM: 76.5DB Cockpit noise: 45.2DB |
Sound Quality |
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Internals | ![]() |
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Design |
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