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IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

3.5 Quad tips on 17 diffuser?

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Old Sep 17, 2017 | 06:46 AM
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Question 3.5 Quad tips on 17 diffuser?
Does anyone have 3.5 quad tips on the stock 17 diffuser? Most of the pictures I found browsing around were with aftermarket diffusers. I'm wondering about the fitment. Measurement wise it seems it would be quite close.
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Old Sep 18, 2017 | 03:34 PM
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Bump. Want this
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Old Sep 18, 2017 | 06:24 PM
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You need to measure how wide your stock diffuser opening is. Each of my tips is 3.5" and the opening is 8.3". If yours is less than 8" it wont fit.

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Old Sep 19, 2017 | 08:47 PM
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Did you change out the stock diffuser or is that an aftermarket one?
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Old Sep 20, 2017 | 10:22 AM
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Originally Posted by leo877
You need to measure how wide your stock diffuser opening is. Each of my tips is 3.5" and the opening is 8.3". If yours is less than 8" it wont fit.

Funny that you've got the UH bumper on the car. I'm writing this post at UH in class right now! LOL.
OP I've got an exhaust coming in a few days that has 3.5" tips on it. I'll let you know and post a pic on how it fits with my 17' IS!
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Old Sep 21, 2017 | 09:41 AM
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Would quad tips fir the RC fit on the 2017 IS diffuser? Any recommendations? I want them to follow the same fitment as the oem rectangular tips. I don't want them to stick out and I want them to fill out the same lines as the current ones so it looks nice and clean. Given the shape of the rectangular ones, they'd have to be slightly staggered. Thanks.
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Old Sep 21, 2017 | 09:53 AM
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Apexi makes a quad tip axel back exhaust for the 2017 diffuser.

Here's a link to the vendor post.
https://www.clublexus.com/forums/cl-...p-exhaust.html
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Old Sep 21, 2017 | 03:45 PM
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I have what you’re looking for 😏😏 , 17 rear diffuser and 3.5 in outlet quad set up Au
Attached Thumbnails 3.5 Quad tips on 17 diffuser?-07abec90-c7cb-427a-acbd-2a08c9249c80.jpeg   3.5 Quad tips on 17 diffuser?-5ce42b4c-d4a3-4d8c-bec7-ba545af6417a.jpeg   3.5 Quad tips on 17 diffuser?-08819470-fdb3-4ed5-b371-257e2ad82864.jpeg  
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Old Sep 21, 2017 | 04:48 PM
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Originally Posted by Santi18
I have what you’re looking for 😏😏 , 17 rear diffuser and 3.5 in outlet quad set up Au
Stock muffler?
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Old Sep 21, 2017 | 05:13 PM
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Originally Posted by Santi18
I have what you’re looking for 😏😏 , 17 rear diffuser and 3.5 in outlet quad set up Au
Looks great, thanks for sharing. What exhaust are you running?
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Old Sep 21, 2017 | 09:58 PM
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Originally Posted by isquarei
Looks great, thanks for sharing. What exhaust are you running?
Originally Posted by FUZCO
Stock muffler?

Just a Muffler delete , kinda hard finding a nice exhaust for awd 🙄 sounds perfect imo, very minimal drone at all on highway .
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Old Sep 21, 2017 | 10:02 PM
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Originally Posted by Lexus3GIST
Funny that you've got the UH bumper on the car. I'm writing this post at UH in class right now! LOL.
OP I've got an exhaust coming in a few days that has 3.5" tips on it. I'll let you know and post a pic on how it fits with my 17' IS!
LOL, it's been there 3 years. I just graduated last summer. They hated me every time I floor it in the garage though
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Old Sep 21, 2017 | 10:04 PM
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Originally Posted by Santi18
I have what you’re looking for 😏😏 , 17 rear diffuser and 3.5 in outlet quad set up Au
LOL I broke my neck to see your pics
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Old Sep 21, 2017 | 10:57 PM
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Originally Posted by leo877
LOL I broke my neck to see your pics

haha sorry , it’s all bout the angles 😉
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