Stainless Steel Exhaust Flex Bellows (Smooth Liner) FLEX JOINT

Stainless Steel Flex Bellows are the perfect flex joint for your downpipe and wastegate dump tube applications. These exhaust bellows feature a solid directional liner for a smoother exhaust flow compared to traditional braided/interlock flex couplers. Use these to absorb vibrations and shifts in material due to heat expansion. The double layer inner liner is formed tight enough that it will not clang back and forth under load and make noise. Constructed entirely of 304 Stainless Steel for long lasting performance. Features slip fit ends for easy placement and welding.

Electro Polished Bellows Assembly with Solid Liner by Zhejiang Yueding. Designed utilizing the latest technology, this product by Vibrant Performance features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.

Features:

Designed to unlock more performance out of your vehicle

Deliver a reasonable balance of strength and durability

Premium construction built with unmatched quality standards

Ensure smooth, reliable operation and long-lasting service

If your exhaust setup deals with constant vibration or slight misalignment, a flex bellows with a smooth liner is often the quiet fix that keeps everything together. It’s not the flashiest part in the system, but it makes a difference — reducing stress on pipes, mufflers, and flanges that would otherwise crack over time.

We manufacture these flex joints from stainless steel—usually grade 304 or 321 depending on the temperature range you’re working with. The smooth inner liner helps gases flow more steadily, without the turbulence or whistling noise you sometimes get with standard interlocked types. It’s not always necessary, but when you’re dealing with high flow or turbo applications, the liner earns its place.

You’ll find this design in OEM exhaust systems, heavy-duty trucks, construction machinery, and even power generator lines. We don’t claim it’s perfect for every setup — it adds a bit of cost and weight — but for long-term reliability, especially under heat and movement, it’s hard to replace.

As a factory supplier, we build flex bellows in multiple diameters, lengths, and braid styles. You can choose from single or double braiding, plain ends or nipples, and we can weld flanges or adaptors directly to fit your assembly line. We’re not just selling parts — we’re building components that keep your exhaust systems stable, flexible, and serviceable for years.

Zhejiang Yueding offers premium automotive products which are popular with prominent industry professionals and their customers. Since the foundation of the company in 1992 it has begun to design and manufacture exhaust and induction components for the sport compact performance market. Today Zhejiang Yueding carries a comprehensive line of high-grade fabrication components, performance exhaust systems, and many more products.

Part Number:68944 68935 69683 69425 69327 69527 69632 69724 69834