By its very nature, the gearhead world is one of customization. And while that’s usually a good thing, it can present its fair share of headaches.
For example, say you’re fabbing up a custom intake, forced induction, of exhaust setup for an engine swap or hot rod project. There’s a good chance you’ll have to jump between tubing diameters to make everything connect together—which means you could be stuck with the tedious, time-sucking job of making adapters.
If that sounds familiar, then you’ll probably like Summit Racing’s line of Formed Transition Tubes.
![](https://www.onallcylinders.com/wp-content/uploads/2022/08/31/Summit-Racing-Formed-Transition-tube-diameter-adapter-fitting-for-intake-tubo-or-exhaust-1024x1024.jpg)
Made from either 304 stainless steel or 6061 aluminum, these short, three inch long tubing sections help you quickly transition to/from larger or smaller diameter tubing, saving you a ton of metal work and fabrication time.
In other words, these Summit Racing Formed Transition Tubes are a hassle-free solution for switching between common tubing sizes for, say, a turbocharger or supercharger retrofit, engine swap, or custom exhaust—basically, anywhere you need a reliable, smooth tubing transition that won’t unnecessarily compromise flow. Check out some of the sizing options available below.
Summit Racing Formed Transition Tube Adapter Sizes
- SUM-643070 – Stainless Steel, 2.5-to-3 inch I.D.
- SUM-643071 – Stainless Steel, 3-to-3.5 inch I.D.
- SUM-643073 – Stainless Steel, 3-to-4 inch I.D.
- SUM-643072 – Stainless Steel, 3.5-to-4 inch I.D.
- SUM-643074 – Stainless Steel, 4-to-5 inch I.D.
- SUM-260041 – Aluminum, 2.5-to-3 inch I.D.
- SUM-260042 – Aluminum, 3-to-3.5 inch I.D.
- SUM-260044 – Aluminum, 3-to-4 inch I.D.
- SUM-260043 – Aluminum, 3.5-to-4 inch I.D.
- SUM-260045 – Aluminum, 4-to-5 inch I.D.
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