Down Pipes and Flanges

Swapping a bigger turbo onto your CAT, Cummins, Detroit, or other heavy-duty diesel engine? Getting the turbo mounted is only half the battle — you still have to get the exhaust connected.

Momentum Worx stocks the downpipes, flanges, bellows, reducers, extensions, and piping you need to make it happen. Whether you're converting a Cummins ISX to a fixed-geometry turbo, installing a larger turbo on a CAT, or building something completely custom, we've probably got something here that will save you a whole lot of cutting, welding, and aggravation.

We carry Marmon flanges, V-band flanges, exhaust bellows, reducers, adapters, extensions, and handmade downpipes for some of the most popular heavy-duty turbo conversions. Want to build your own? We also sell individual flanges and components so you can fabricate exactly what you need.

We've spent years putting together solutions for turbo combinations that weren't necessarily designed to bolt together. If you're trying to figure out how to connect your new turbo to the rest of your exhaust system, you're in the right place.

Your ISX conversion or CAT Single Turbo Swap just got a whole lot easier.