Installed these on my 2018 370z and they woke the car up! I highly recommend installing at a shop if you do not have the confidence or the tools. Fitment was perfect and had no issues pairing this with my motordyne catback e370. Definitely felt an increase in power, went from art pipes to long tube headers which replaced them. For the price to power its worth it. In order for these to work on the 370z you must extend your primary afr sensor, i recommend nisformance for their extensions

Installed on my ‘05 g35 rev up, and dang these are awesome. Love the exhaust note, and power is there. Quality is truly there!

I put these on my 2013 G37S Sedan and they’re amazing. Welds are immaculate. The inside welds that bolt near the engine head where cleaned up very nicely. 0 Fitment issues. Fill fit any VQ37HR!!

Very well made pipes here , thanks for making awesome long tubes just ferocious. But u didn't give me a sticker.

Must have for anyone that wants to make more power and great sound. Installation was tricky but there are plenty of tutorials online for all the do it yourselfers. Great build quality. Have had them on my '04 350z all season and absolutely love them.

Wasn’t the easiest install and had me cursing a lot but was absolutely worth it. The car sounds so deep now, I have it paired with a soho single exit. You can feel the power difference. Make sure to get a tune after!

Can't give this more than a 2. The reduction in diameter closer to the ports is very noticeable and wish it was consistent for better airflow. The length difference between port 1 and 3 on one side is big and is not close to equal. Two of the ports on one side are touching so can't get a heat wrap in between, while the other side is ok and it's quite annoying. I guess that's what budget headers get you. Delivery was super quick though.

Purchased back in 2022 ISR LTH for my 2011 G37xS sedan. Made everything sound and respond better. Uninstalled due to emissions BS. No MIL or CES. This policy for EPA is BS!!! These government officials can suck a fat d!çk. I don't care if the environment is dying (electeic cars causes more destruction), EVs will not replace this fossil fueled delight. I miss the purr and raunchy attitude. I got the ISR HFCs looking to pair it with either DC sports or ISR Shortys.....