End up getting the double wall stainless tips on my 2019 IS300 F-Sport. Took bout a month to get my exhaust but worth it. On the side note, taking out the stock was a pain but Toyota can do a better quality exhaust after examining their exhaust. Install was easy and took me bout 30 min using a ramp. Fitment was spot on and flawless like stock OEM. Gotta love bolt-on! Everything that came with the Remark exhaust was complete to get the job done from exhaust hangers to bolts. Was unsure at first about one of the review that had to use a different spring bolts but mine was a perfect fit from Remark for my car year. Been searching high and low and found my perfect exhaust that delighted me every time I take my car out. Yes, it's loud inside the cabin when I first got it but after a month driving, it tone down a bit as long you don't heavily step on the gas pedal unless it's on "Sports" mode per say. Invest your hard earn money on Remark exhaust and you'll be please with the results for your Lexus. LOVE MY IS300! Thank you Remark for supporting Lexus and keep up the good work. Get my 5-STAR!