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The 7" length may work well. Mine were 9". The stubby outlets on the factory piping isn't super long so you need some length to be able to get to the rear bumper. The oval isn't the biggest issue for me as much as it was how far the stock tips were tucked under the rear bumper. I feel a 3" may be too small, but a 4" is bordering on too large. I truly think that a 3.5" round tip would be the perfect size.
Totally agree the 4" looks huge but should be less striking if they're black as compared to leaving them chrome/silver. The Borla tips are 4" inch but don't look that huge since they're black. Having said that, if we can find 3.5", all the better. It's just the combination of inlet size, outlet size, overall length, color, shape and lastly quality (T304 stainless steel) makes this a challenge to get it 100%.
Originally Posted by mavisky
The 7" length may work well. Mine were 9". The stubby outlets on the factory piping isn't super long so you need some length to be able to get to the rear bumper. The oval isn't the biggest issue for me as much as it was how far the stock tips were tucked under the rear bumper. I feel a 3" may be too small, but a 4" is bordering on too large. I truly think that a 3.5" round tip would be the perfect size.
Not an IS500 but I just had some 3.5" exhaust tips installed on my GSF. These are the one's I used and they are weld on. The inlet is just large enough to clear the "bumps" on the stock outlet pipes. https://www.lhtperformance.com/produ...ss-exhaust-tip
In my opinion the 3.5" look perfect. I like mine a little bit tucked and staggered. The GSF has longer outlet pipes so I can't say for sure how far they would need to stick out on the IS. Thanks a lot for all the info in this thread it helped me pick the right tips for my car.
Just picked up the tips from the powder coating shop. They came out soooooooo good and look even better on the car. This should have been an option from Lexus to begin with.
Powder coating these cost me $280. I wouldn't do it again though. The finish dulled out from the heat after only a couple of weeks of use. Only noticed it when I removed the exhaust and sold it.
If you're looking for a glossy, flawless, smoothest, and most durable finish, then go for PVD coating. If you can find a shop to do it for you, it's around $500.
If you're looking for a satin/matte. flawless, smoothest, and durable finish, then go for Cerekoat`d coating. You can get this done at pretty much any firearm customization shop. I went this route for my Novel tips (with laser etching back the Novel letters).
Last edited by spielnicht; Oct 24, 2025 at 05:02 AM.
If you're looking for a glossy, flawless, smoothest, and most durable finish, then go for PVD coating. If you can find a shop to do it for you, it's around $500.
