BigGun EXO exhaust 2015 review - Yamaha Raptor Forum
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post #1 of 37 (permalink) Old 09-02-2015, 09:25 PM Thread Starter
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BigGun EXO exhaust 2015 review

Going into an exhaust purchase blindly is rarely a good thing. But
I really had no choice since there is absolutely zero information out
there on the 2015 Dual Setup from BigGun.

I reached out and spoke with Phil at BigGun to see how the new
one-into-two exhaust setup worked on the 15+ Raptors compared
to their single pipe offering. Phil said to expect more low end gains
from the duals and more mid band to high RPM gains from the single
pipe setup.

The price difference wasn't huge and the look of dual pipes for these
machines is killer. I also listened to some of the single pipe videos
so I had a rough idea what it would sound like. The idle sound is
very deep and thumpy which is exactly what I was looking for.


The exhaust arrived well packaged. Each pipe was sealed in it's
own plastic bag, the mufflers were then wrapped in numerous
layers of bubble wrap. There were wads of heavy packing card
board in each end of the box and all of the hardware was in heavy
zip lock type baggies.


The install did not go well the first time and I need to elaborate
on the "why". For what ever reason my exhaust did not come with
install instructions in the box and BigGun did not yet have them
posted on their web site.

Me being the impatient FOOL that I am, I figured "who needs
instructions to install exhaust pipes". That was the wrong thought
process because I did NOT install the pipes correctly which resulted
in the chain rubbing the left hand pipe and had I not caught it, it
would have rubbed through in very short order.

I decided that I should probably call and talk to BigGun. So the
next day I called and spoke with Heather who immediately emailed
me out a copy of the instructions and said if I ran into any issues
to give them a call back and they would walk me through the
install and make sure everything was ok.

After reading the instructions I realized how I missed numerous
steps and at that point the best thing to do was to remove all
of the pieces and start over fresh out of the box and follow said
instructions.

I am glad to say that the instructions were spot on and the second
install went off without a hitch and the pipes wound up exactly
where they should be. Now I do want to be clear and say that this
exhaust has a fair amount of pieces so you need to follow the
instructions verbatim.

None of the pipes should be tightened down until all of the fitting
work is done. You need to take your time and make sure all of the
pipes are well fitted and fully seated into each other before you
start the process of tightening anything.

When it's all said and done the pipes are bent absolutely perfectly
they clear everything without issue. No rubbing and plenty of
clearance from wires.

The finish on all of the pipe work is just shy of a polish job. The
pipes have a very fine satin finish. The neat thing about that type
of finish is that the exhaust gas heat does a nice job of changing
the pipe color. They go from a raw stainless color to a very nice
gold tone which IMHO looks very trick.

I really like how BigGun uses stainless springs with silicone jackets
to keep them from rattling that's a nice touch. The cans are very
solid with clean tig welds and a very distinctive shape and cone.

Included was an extra pair of pipe springs in addition to the spark
arrestor screens.












2015 Yamaha Raptor 700r Special Edition
"Mods"
  • Big Gun EXO Dual Exhaust
  • Dynojet PC5 Commander
  • Swiss Cheese Airbox Lid
  • Power Madd White Hand Guards
  • Power Madd Rear View Mirror Kit
  • +60 Horsepower worth of stickers!
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post #2 of 37 (permalink) Old 09-03-2015, 02:56 PM
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Looks sick bro! Loved to hear a sound clip
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post #3 of 37 (permalink) Old 09-03-2015, 04:00 PM
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Sweet! Look just like mine haha. You should be pretty happy with them. I've had mine damn near since they came out and I haven't had any issues with the cans like I did with the EVOs.

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post #4 of 37 (permalink) Old 09-03-2015, 04:07 PM Thread Starter
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Ask and you shall receive! https://youtu.be/u1VBaoP-Mf0 Best viewed in 1080p

2015 Yamaha Raptor 700r Special Edition
"Mods"
  • Big Gun EXO Dual Exhaust
  • Dynojet PC5 Commander
  • Swiss Cheese Airbox Lid
  • Power Madd White Hand Guards
  • Power Madd Rear View Mirror Kit
  • +60 Horsepower worth of stickers!
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post #5 of 37 (permalink) Old 09-03-2015, 04:08 PM Thread Starter
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Quote:
Originally Posted by jdacus View Post
Sweet! Look just like mine haha. You should be pretty happy with them. I've had mine damn near since they came out and I haven't had any issues with the cans like I did with the EVOs.
@jdacus

I am SUPER happy! The photos I showed above are before I took
the exhaust off and refit it. I should have uploaded the after photos
instead, it shows how much clearance the pipes have around the
frame.

2015 Yamaha Raptor 700r Special Edition
"Mods"
  • Big Gun EXO Dual Exhaust
  • Dynojet PC5 Commander
  • Swiss Cheese Airbox Lid
  • Power Madd White Hand Guards
  • Power Madd Rear View Mirror Kit
  • +60 Horsepower worth of stickers!
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post #6 of 37 (permalink) Old 09-03-2015, 04:40 PM
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Hey, they look and sound great. But, it sounds like you may have exhaust leakage, mostly in the front. I can hear more exhaust noise in the front and side then around the back at the outlets of the cans. Take about a 3ft length of hose, with one end to your ear, the other end to the exhaust fittings and connectors. If there is leakage, you'll find it quickly.
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post #7 of 37 (permalink) Old 09-03-2015, 05:55 PM
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Difference between EXO and the EVO from what I have read is where the power curve is. Where Jdacus rides the EXO is needed for top end, I run the EVO for mid-range torque. I am super happy with my set up.

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post #8 of 37 (permalink) Old 09-03-2015, 06:28 PM Thread Starter
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Quote:
Originally Posted by DEZPERADO View Post
Hey, they look and sound great. But, it sounds like you may have exhaust leakage, mostly in the front. I can hear more exhaust noise in the front and side then around the back at the outlets of the cans. Take about a 3ft length of hose, with one end to your ear, the other end to the exhaust fittings and connectors. If there is leakage, you'll find it quickly.
@DEZPERADO

You have a GOOD ear! It was leaking right at the collector to head
pipe junction. That video was shot the first time I installed the exhaust
and it didn't fit right at all. Now that it's been fitted correctly all of
the pipes are fully seated and there are no more exhaust leaks!


Here is a photo of how nice the pipes fit when they are installed
correctly.
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2015 Yamaha Raptor 700r Special Edition
"Mods"
  • Big Gun EXO Dual Exhaust
  • Dynojet PC5 Commander
  • Swiss Cheese Airbox Lid
  • Power Madd White Hand Guards
  • Power Madd Rear View Mirror Kit
  • +60 Horsepower worth of stickers!
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post #9 of 37 (permalink) Old 09-03-2015, 06:41 PM
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Where does the clutch side pipe run through by the sprocket. Got some pics?

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post #10 of 37 (permalink) Old 09-03-2015, 06:54 PM Thread Starter
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@700craptor



Hopefully that photo helps. If not, I can go take some close-ups of the left hand side routing for ya.

2015 Yamaha Raptor 700r Special Edition
"Mods"
  • Big Gun EXO Dual Exhaust
  • Dynojet PC5 Commander
  • Swiss Cheese Airbox Lid
  • Power Madd White Hand Guards
  • Power Madd Rear View Mirror Kit
  • +60 Horsepower worth of stickers!
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