Stainless Steel Exhaust Flanges

Bolted flanges let an exhaust system come apart for service, and this collection covers the Vibrant Performance stainless steel 2-bolt and 3-bolt exhaust flanges for round tube, sold individually and in shop boxes.

2-bolt or 3-bolt

2-bolt flanges are compact and common on smaller pipes and tight spaces. 3-bolt flanges clamp more evenly and are preferred on larger pipe and joints that see more heat or movement.

Stainless for longevity

Stainless flanges will not rust together, so bolts come out years later. Pair them with stainless or high temperature hardware and matching gaskets.

Sizing

Flanges are listed by the tube size they fit. Match the flange I.D. to the outside diameter of your pipe so it slips on for welding.

Common questions

Are gaskets included? Gaskets are sold separately in the gaskets collection to match each flange.

Can I weld these to mild steel pipe? Yes, using a filler made for dissimilar metals such as 309.

Why buy a box? Shops and builders doing multiple systems save per piece and keep common sizes on hand.

What's in This Collection

  • 26 products from Vibrant Performance, priced from $28.99 to $177.41
  • Sizes: 2", 2.25", 2.5", 2.75", 3", 3.5", 4"
  • Materials: Stainless
  • Free shipping on orders over $150

How to Choose

Match the tube outside diameter and material to the rest of your build. 304 stainless is the most common choice for exhaust, 321 stainless handles the extreme heat of turbo manifolds and headers, titanium saves weight, and aluminum is the go-to for intake and intercooler piping. Wall thickness and bend radius matter when you need parts to fit together cleanly.

More Questions

Do I need to back purge stainless when welding?

Yes. Back purging with argon keeps the inside of the weld from sugaring, which gives you a stronger, cleaner joint.

Can I mix stainless and mild steel?

You can weld them together with the right filler, but the joint can rust over time. For best results keep the system one material.

Related Collections