Customer Review

Reviewed in the United States on February 25, 2016
I use this tool to stretch mild steel exhaust tubing, so I can do slip-fit assembly of all my bends, straights, cats and mufflers for my DIY custom exhaust. I don't use clamps - I weld - but making everything slip-fit lets me put the WHOLE system together and get it aligned perfectly, then hit the joints with a couple tack welds to maintain the alignments. Then I can remove the tubes from the car and finish weld on my table. For an amateur welder like me, lapped joints are a ton easier to get clean welds on too. Butt welds need very tight, no-gap lineup between the pipes, which means a ton of test fitting, tube end filing, and refitting. A serious time suck.

Or if I'm replacing stock/OEM exhaust parts that have worn out on one of my street cars, this is also helpful if something isn't lined up quite right and I need to make a coupler or something.

I really doubt it would stretch stainless. Maybe if it was really thin, I don't know.

The O-rings that hold the tool segments together are rubber/elastomer material, and they do break from time to time. Lisle part numbers for replacements are 34500 for the small and 34490 for the larger one.
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Product Details

4.6 out of 5 stars
4.6 out of 5
321 global ratings