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Mazdaspeed Exhaust Differences

Old 11-16-2018, 03:56 PM
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Mazdaspeed Exhaust Differences

I'm looking at getting the Mazdaspeed exhaust. I see two variants; one that you can order from Japan, Part # MZS41414320001. Photo looks different from the Part number # GRMS-8M-K06 which is out of stock. Does anyone know the difference? I heard these are light weight compare to the Racingbeat therefore, looking to get a little more sound and gains without adding weight.

Let me know if you have any info on these.

Thanks,
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Old 11-16-2018, 04:35 PM
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The first one isn't a Mazda part number. I'd also be a little surprised if any new Mazdaspeed gear for the 8 is still in stock anywhere.

And also also, be careful if you have an S2. The GRSM-8M-K06 will need to be modified to fit. The tips sit differently.
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Old 11-30-2018, 04:29 PM
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I just picked up GRSM-8M-K06. I have a S1, 07, so I was sure it was a simple clamp install but turns out its reverse. We had to weld a custom pc to the midpipe so that it would connect properly. Overall, install went smooth. I'm noticing that the right exhaust sticks out further than the left. I'm not sure if it shifted after install but most likely need to get it checked. photos to follow soon. Thanks,
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Old 12-01-2018, 12:03 AM
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Old 12-01-2018, 08:57 AM
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Nice! I have the same one. Having to weld something in is unusual. The kit included the midpipe and the muffler?
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Old 12-01-2018, 01:35 PM
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no did not include midpipe, just muffler. i has to
weld the midpipe to the muffler.
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Old 12-07-2018, 11:31 AM
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went to double check that the hangers were all put on right, some reason the right exhaust sticks out 1 inch out more... he asked if he wanted to cut the right exhaust pipe to shorten it but i think iíll try to live with it.. anyone have any ideas how to fix?
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Old 12-07-2018, 11:44 AM
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Don't cut the pipe, bend or move the hanger instead. On both sides until it's even.
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