My version of a rear hull exhaust on a FZS....

[r33pwrd]

So long story short I have always felt Yamaha should have a rear exhaust like the Kawasaki's but I did not want the obnoxious sound or drone (yes i'm old, ok well not old but not young anymore) Most of this stuff is pretty basic but I could not find anywhere that someone had done this.

Step one: buy kit from: http://www.4-tecperformance.com/inde...oducts_id=1427 (use greenhulk and save 10%)
first thing first drill hole using RIVA template:


Next part I set up a small jig so I would know where the oem exhaust sat in its natural state (this was done after removing the OEM muffler)




Next I removed all the OEM exhaust as well as installed the Riva block off kit for the OEM hole.

Next was to install tip. I added a few pictures for a neat trick I figured out (this tip is a pain in the ass if your fat and short like me lol)
I installed some 2" long bolts that I cut the heads off so the trim piece would self align and I would not have to reach all the way in there


Super easy to do now, just put in the three screws than remove the alignment studs with your fingers

All done with tip now!

Next install a 3.5" 60 degree elbow (got one from frozen boost) You can use a zip tie to make installing the clamp easier (the zip tie act like a one way ratchet and makes it easy to do with one hand)

Slide it on than squeeze!

now install nut and snug down and install a 3.5 silicone adapter one.


Next trim the stock cross exhaust piece to fit (you need to leave some of the angle on it) sorry I don't have a picture of this part as my phone was MIA but here It is installed with the jig removed.


This will hook up to the OEM exhaust I DO NOT expect any better speed with it but to me it was my one "bling" mod I am doing and it in theory is a little less restrictive on the exhaust as I removed about 70 degree worth of bends lol

I will also be doing the Tommy Jordan mod as well! As far as sound... well I wont know that until after I do the tunnel and put it all back together!

[Yellow93]

Love the alignment studs trick! I'll be using that for sure when I do my JD1 rear exhaust soon.

[r33pwrd]

Love the alignment studs trick! I'll be using that for sure when I do my JD1 rear exhaust soon.

They are worth the 50 cents for sure!

[r33pwrd]

Why are all the pictures upside down now? Weird...

[jp1300r]

+1, Really like that rear exhaust outlet install idea. Thanks for posting.

[mikeFZR]

Nice! Thanks for sharing. Looks like you did a great job.

[r33pwrd]

Nice! Thanks for sharing. Looks like you did a great job.

Thanks man! Kinda a worthless performance mod but I really like the rear exit look

[vshockey10]

I agree rear exhaust is way better and keep the pump area clean. looks good BTW

[LT1GMC]

So this allows you to keep the stock sound suppression? Has anyone else done this with stock sound suppression and have a report on the sound change? Thats one of the things I love about my new FZS, fast and quiet compared to the GPR1390.

[r33pwrd]

So this allows you to keep the stock sound suppression? Has anyone else done this with stock sound suppression and have a report on the sound change? Thats one of the things I love about my new FZS, fast and quiet compared to the GPR1390.

Yup! I'm building my trailer so no water testing for me for awhile I had asked if anyone had done this before and one person said yes but never returned to say who or how.