i found this on web while searching for PRICES just to see exhaust since i will be putting one soon, i was thinking to go with invidia q300 axle back, but i just saw this its Quad tips and cheaper, what do you guys think? is 97db almost quiet stock?
http://topspeedauto.com/lexus-is250-...xhaust-system/

 

This won't fit the 14-16 IS without an aftermarket diffuser. 17 IS is yet to be tested with a quad set up as far as I know on the factory diffuser

 

It looks like an aimgain knock-off. Also I wouldn't consider 97dB quiet, but I also don't know how loud the other exhausts.

 

I have one BNIB not opened if you're interested.

 

keep it original and single outlet

 

Love my quad tips

 

Iooks like it works with stock rear..

Use All Stock Exhaust Hanger Brackets with Stock Rear Bumper Valance / If you have Upgrade SEIBON Carbon Fiber Rear Lower Diffuser you will need to use Outer Brackets on each side of Exhaust and use Zip Tie on Inner Bracket hangers to Line up the Position fitment as shown in installed pictures.

 

It will work on stock rear.
I just have it installed.
The exhaust tips stick out more than I like but can't beat the price.

 

Any pictures ? A video maybe?

 

Has anyone got a price or quote on the new 17 diffuser? I have a 16 and want to replace diffuser and install quad tips.

 

Pictures please

 

Do you still have the exhaust, and how much are you asking? PM me if you like.

 

I've watched the youtube vid sound clips that were embedded on the site. Is it me? or does it not sound any different than the stock exhaust?

& those ~2 inch tips looks weird imo

 

How are you liking the Top Speed exhaust now that you've had it on your car for awhile? Would you please post some pictures? I just received mine, and was worried about the fit.

 

Here's pics