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  • Exhaust
    • Exhaust
    • Performance Exhaust Systems
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Exhaust Flex Bellows

Your vehicle’s engine is designed to move and vibrate, but your exhaust system is not. This mismatch creates stress points that can lead to cracked headers, broken welds, and frustrating leaks. The solution is a high-quality flex bellow, an essential component engineered to absorb vibrations and allow for thermal expansion. 

By installing a flex bellow in an exhaust system, you isolate the rest of the components from the engine’s torque and movement, protecting your investment and maintaining performance. Here at Perform-Ex Auto, we stock a massive range of exhaust flex bellows designed for durability and a perfect fit, allowing you to build or repair your system with confidence.

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  • 1 1/2" (38mm)
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Showing 37 Results
CLAMP IN STAINLESS STEEL 6" X 2" 51MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 6" X 2" 51MM EX

$42.00

CLAMP IN STAINLESS STEEL 4" X 1.75" 45MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 4" X 1.75" 45MM

$35.00

CLAMP IN STAINLESS STEEL 4" X 2" 51MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 4" X 2" 51MM EX

$35.00

CLAMP IN STAINLESS STEEL 4" X 2.25" 57MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 4" X 2.25" 57MM

$37.00

CLAMP IN STAINLESS STEEL 4" X 3" 76MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 4" X 3" 76MM EX

$41.00

CLAMP IN STAINLESS STEEL 6" X 1.75" 45MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 6" X 1.75" 45MM

$42.00

CLAMP IN STAINLESS STEEL 6" X 2.25" 57MM EXHAUST FLEX BELLOW

CLAMP IN STAINLESS STEEL 6" X 2.25" 57MM

$42.00

STAINLESS STEEL 10" X 1.75" 45MM EXHAUST FLEX BELLOW (FLEX10175B)

STAINLESS STEEL 10" X 1.75" 45MM EXHAUST

$26.00

STAINLESS STEEL 10" X 2" 51MM EXHAUST FLEX BELLOW (FLEX10200B)

STAINLESS STEEL 10" X 2" 51MM EXHAUST FL

$29.00

STAINLESS STEEL 10" X 2.25" 57MM EXHAUST FLEX BELLOW (FLEX10225B)

STAINLESS STEEL 10" X 2.25" 57MM EXHAUST

$32.00

STAINLESS STEEL 10" X 2.5" 63MM EXHAUST FLEX BELLOW (FLEX10250B)

STAINLESS STEEL 10" X 2.5" 63MM EXHAUST

$29.00

STAINLESS STEEL 10" X 3" 76MM EXHAUST FLEX BELLOW (FLEX10300B)

STAINLESS STEEL 10" X 3" 76MM EXHAUST FL

$36.00

STAINLESS STEEL 4" X 1.5" 38MM EXHAUST FLEX BELLOW (FLEX4150B)

STAINLESS STEEL 4" X 1.5" 38MM EXHAUST F

$34.00

STAINLESS STEEL 4" X 1.75" (45MM) EXHAUST RACE FLEX BELLOW WITH INNER SLEEVE (FLEX4175C)

STAINLESS STEEL 4" X 1.75" (45MM) EXHAUS

$30.00

STAINLESS STEEL 4" X 1.75" 45MM EXHAUST FLEX BELLOW (FLEX4175B)

STAINLESS STEEL 4" X 1.75" 45MM EXHAUST

$22.00

STAINLESS STEEL 4" X 2" (51MM) EXHAUST RACE FLEX BELLOW WITH INNER SLEEVE (FLEX4200C)

STAINLESS STEEL 4" X 2" (51MM) EXHAUST R

$30.00

STAINLESS STEEL 4" X 2" 51MM EXHAUST FLEX BELLOW (FLEX4200B)

STAINLESS STEEL 4" X 2" 51MM EXHAUST FLE

$24.00

STAINLESS STEEL 4" X 2.25" (57MM) EXHAUST RACE FLEX BELLOW WITH INNER SLEEVE (FLEX4225C)

STAINLESS STEEL 4" X 2.25" (57MM) EXHAUS

$31.00

STAINLESS STEEL 4" X 2.25" 57MM EXHAUST FLEX BELLOW (FLEX4225B)

STAINLESS STEEL 4" X 2.25" 57MM EXHAUST

$17.00

STAINLESS STEEL 4" X 2.5" (63MM) EXHAUST RACE FLEX BELLOW WITH INNER SLEEVE (FLEX4250C)

STAINLESS STEEL 4" X 2.5" (63MM) EXHAUST

$33.00

STAINLESS STEEL 4" X 2.5" 63MM EXHAUST FLEX BELLOW (FLEX4250B)

STAINLESS STEEL 4" X 2.5" 63MM EXHAUST F

$18.00

STAINLESS STEEL 4" X 3" (76MM) EXHAUST RACE FLEX BELLOW WITH INNER SLEEVE (FLEX4300C)

STAINLESS STEEL 4" X 3" (76MM) EXHAUST R

$33.00

STAINLESS STEEL 4" X 3" 76MM EXHAUST FLEX BELLOW (FLEX4300B)

STAINLESS STEEL 4" X 3" 76MM EXHAUST FLE

$21.00

STAINLESS STEEL 6" X 1.5" 38MM EXHAUST FLEX BELLOW (FLEX6150B)

STAINLESS STEEL 6" X 1.5" 38MM EXHAUST F

$22.00

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Choose Between Clamp-In or Standard Exhaust Flex Bellow Designs

The first decision in selecting the right part for your project is the installation method. For mechanics and DIY enthusiasts looking for a straightforward, bolt-on solution without the need for a welder, our clamp-in designs are the ideal choice. These units come ready to be secured with high-quality clamps, making for a quick and secure installation or repair. 

On the other hand, for custom builds or permanent, professional-grade applications, our standard weld-in exhaust flex bellow provides a seamless and robust connection. Welding the bellow directly to your pipework creates the strongest possible bond, perfect for high-performance vehicles or heavy-duty 4x4s where absolute reliability is non-negotiable.

Find the Perfect Fit with a Range of Pipe Diameters

Once you have settled on an installation style, achieving a perfect seal and unrestricted gas flow comes down to matching the component diameter to your existing pipework. A mismatched pipe diameter creates turbulence and backpressure, robbing your engine of power and efficiency. 

Our selection covers a vast array of sizes, from smaller 38mm pipes suitable for compact cars to large 101mm diameters needed for high-displacement trucks and modified performance vehicles. 

Selecting the correct diameter for your flex bellows exhaust setup prevents bottlenecks, maintains exhaust velocity, and supports the proper function of downstream components like catalytic converters and mufflers.

Select the Length That Matches Your Application

Getting the diameter right is crucial for flow, but the length of the exhaust flex bellow dictates how much movement and vibration it can effectively absorb. The right length depends entirely on your vehicle’s specific needs. 

A system with significant engine movement or one installed in a vehicle that experiences a lot of chassis flex, like an off-roader, will benefit most from one of our longer bellows that offer a greater range of motion. 

Conversely, builds with tight space constraints or less engine torque may only require a shorter bellow to do the job. Choosing the appropriate length provides your system with the flexibility it needs without unnecessary bulk, and we have all the sizes you could need.

Rely on Heavy-Duty Stainless Steel for Durability

A perfect fit means little if the part corrodes or fails under pressure. That is why our entire range of exhaust flex bellows is constructed from heavy-duty stainless steel. This material is specifically chosen for its exceptional resistance to the high temperatures, corrosive gases, and moisture inherent in any exhaust system. 

It stands up to road salt, grime, and constant heat cycles without degrading, giving you a part that is built to last. This focus on material quality means your repair or upgrade will not just solve a vibration issue today but will continue to perform reliably for years to come, offering you genuine long-term value and peace of mind.

Shop High-Quality Exhaust Flex Bellows for Performance Upgrades Today

With options for any installation type, pipe diameter, and application length, you can find the exact part you need to protect your exhaust system and keep it performing at its best. Order the parts you need online and we’ll ship them to wherever you are in Australia, full manufacturer’s guarantee included.

However, your project doesn't have to stop with the perfect bellow; we stock everything else you might need to complete the job, from the smallest fasteners to complete pipe kits. Browse our full range of exhaust accessories to find:

  • Bolts, Studs & Nuts
  • Clamps
  • Collectors
  • Couplers & Reducers
  • Exhaust Tips
  • Flange Plates
  • Flat Back Clamps
  • Gaskets
  • Hangers & Brackets
  • Heat Tape
  • Lap & Butt Clamps
  • Mandrel Bend Exhaust Pipes
  • O2 Sensors & EGT Accessories
  • Paint
  • Rubber Mounts
  • Tube
  • X & Y Pipes

If you need any assistance finding the best products for your vehicle’s specific make and model, please do not hesitate to contact our team of experts. We are always ready to talk shop and help you get the right parts for the job.

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