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Drilled exhaust


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  • 8 months later...
  • Supporting Member
8 hours ago, Gldean said:

Any drilled links that currently work?

Both of those links are now broken after the move to the new forum.  I dont know of any other threads.

***2015 Candy Red FJ-09***

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EDIT- Proceed with caution. After drilling my exhaust (Read below) the bike sounded much better and ran great on the couple of short test rides I did. HOWEVER, when I actually got it out for a real ride today, it felt like it was missing something. I turned off the TCS and it will no longer do a wheelie in 2nd gear A mode. This MOD appears to have killed the torque. It still rips through the revs like normal but has just lost a lot of grunt. I'm going to weld up the holes and see if I can confirm this is what's going on.


JCG- Thanks for the idea. I didn't realize it until I'd posted a different thread tonight but your question is what got me started.

I did as much research as I could online but most examples were FZ-09. I honestly didn't care if I made a mistake and the exhaust was destroyed, It's not worth anything anyway. So why not take a stab at this before spending $600-1200 on a new exhaust?

I drilled seven 3/8" holes under the guard in the back of the muffler. Here are the results although it has a deeper, more throaty tone than my phone could capture. I'm thrilled with this ZERO $ mod and it took 20 minutes start to finish including test drives.



Edited by DeepSix
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  • 7 months later...

I put a Delkovic on mine and I felt like it was flat after. I spoke with Dave from Vcyclenut and he confirmed that it probably was losing some grunt. I sent him ECU and he flashed it and the bike came back alive.

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