DNA Motoring ZTL-25SS 16 Pcs 2.5 Inches Stainless Steel DIY Custom Exhaust Tubing Mandrel Bend Pipe Straight & U-Bend Kit, Universal Fit

You can weld with em nice. Ran my truck with a connector pipe to my cats from the header and they have so far held up. Will see long time review. Will be back to do so. A little thin though but still nice. Headers, this and then cats. And they make nice sound. You can hear the valves through the exhaust anlittle bit and I like that. Makes it sound stock car ish. I would imagine others would find the loudness annoying though. Will be finishing up full true duals here soon with a dual in/out connecting muffler soon. Just have to finish the old girl. 07 silverado lh6 2 month review. They're still holding up with blue demon flux core stainless wire. No gas. I ran some 308 rod on it as well and they weld nice. Must run 43 amps with the rod and run fast. Don't hesitate or you'll blow through. With 308 blue demon flux core wire. I ran it at 19 with 275 wire speed and yah gotta run that fast too. Don't hesitate. Weaving tiny circles as you move quick helps wet the toes better. But you don't need to. This runs better if u run it like a stick welder. Mig with 90/10 argon/co2 prolly woulda been best. But oh well. First time running the wire. Wanted to try it out. It's worked out. However long review. Months later. Exhaust hasn't rusted as I popped it with acetone and welded with proper wire. I need to redo the flex pipes and I may have em too tight in the exhaust and they're breaking apart a bit. Otherwise has held up very well. Still sounds good since I did it almost a year ago. Has the desired rumble. What's nice about this tubing. Is if u need to open up a hole for o2 Porta. Just put a dot on the spit and hold it there with the welder til it pops through. Makes an almost perfect circle and then you can run a step bit to open it to the desired size for bungs and defoulers. Quite nice. I'm going to be redoing my entire exhaust here soon as I had alot of blow through but I finally bought the proper gas and solid 308 wire to do it with mig weld tacks when holding in place and then I'm gonna tig it out. Finally got a decent welder instead of the easy flux titanium from harbor freight. Which welds nice but doesn't do everything I need to do. Still good to pull around though. I got the titanium 140 multiprocess and it works good. Not amazing. But can be fine tuned to be adequate. I'm a professional pipe and tank Welder. I can recommend this tubing and that welder.

I bought this to install on my truck, the 3in is what I got and I’m not sure what I was expecting, however, I’ll be ordering more for the remainder to of my vehicles. It definitely surpassed my expectations!

Nice pipe, came with each piece wrapped up individually

This is a decent quality kit the pipes are a little thin and may not hold up to road salt very well. The kit come with everything you need to do a full custom exhaust and is easily weldable. Overall this is a good pipe kit for the money.

The exhaust system went in with a lot of work, but very little problems using stainless band clamps. I did have to have a transition piece from the exhaust manifold welded from two bend pieces, but having the rest of the system routed allowed for good precision in marking the custom piece. The steel is a good thickness, has been installed for a few months now and it still look great. There is heat discoloration on the pieces at the exhaust manifold (the engine had overheating issues) but no corrosion. This kit is a great way to get stainless exhaust on a budget. My only regret is installing 2.5” instead of 3”.

Nice quality stainless exhaust. Plenty of material to run exhaust from headers all the way back. Pre bent pieces make the job easy.

Great exhaust pipe for the money. Had LOTS left over from my project but it is nice to have the spare pieces. Surprisingly nice finish. Expanded joints were a LITTLE too much oversize, so much so that clamping it might have been an issue. I welded everything so I had to clamp and tack it together. Not a huge deal though. Welded great with standard wire.

Nice thick pipe. They fit together nice easy to weld and rust resistant stainless. Smooth bends looks good on all my projects.

arrived quickly. box was less than ideal for the goods and was rather beaten, but every pipe was perfect. quality of bends are excellent. cant beat this price for mandrel bent stainless system with this much piping. i can do nearly two full exhaust systems from this kit. highly recommended.

The product itself is of good quality and 5 star. However, Customer service is not that at all for this product they sell. I inquired about the proper clamping system to use on these pipes as there wasn't any info provided in the ad. I got a message back that they don't have the relevant information from the manufacturer. They recommend go to local dealer or local professional garage. So who, and where would this be? I am in rural area away from a big city center. Service has no idea on the product they sell for best fit and function. Other than that, pipes fit together well and worked well for for my intended purposes. And look great. Heavy wall, fully Stainless, easy to weld if needed.

This is the best deal going for stainless mandrels anywhere. Quality is top notch, bends are super smooth with no deflection. Will purchase more of these for custom exhausts in the future

Nice kit for the $$. Seems to weld good was able to make a nice stainless exhaust for my custom car build.

Packaged well, nice heavy wall stainless pipe with clean bends. I installed full true dual exhaust from headers back on an 81 F250 and had no trouble getting every bend I needed. Welded all seams solid with stainless wire. Can't comment on longevity or actual quality of the stainless alloy but time will tell and it looks beautiful.