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Discussion Starter · #1 ·
Hi all - this is my first post. Nice looking forum you have here.

I picked up a 2017 SCR yesterday and put my first 60 miles on it. Looking for suggestions on mods. Stock pipe (and airbox) have to go. It didn't completely annoy me but for sure my knee was bumping the airbox. Regarding a pipe I found this;

https://www.ebay.com/itm/Danmoto-Highwayman-Slip-On-Exhaust-Yamaha-XV-950-Star-Bolt-2013-2019-HM25/263208205766?fits=Year%3A2017%7CModel%3ASCR950%7CMake%3AYamaha&epid=1350985204&hash=item3d486e7dc6:g:jeoAAOSw2XFUiqUx

Anybody own this pipe? Anyway any suggestions/links greatly appreciated. I'm in Florida. Thanks!
 

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Hi all - this is my first post. Nice looking forum you have here.

I picked up a 2017 SCR yesterday and put my first 60 miles on it. Looking for suggestions on mods. Stock pipe (and airbox) have to go. It didn't completely annoy me but for sure my knee was bumping the airbox. Regarding a pipe I found this;

https://www.ebay.com/itm/Danmoto-Highwayman-Slip-On-Exhaust-Yamaha-XV-950-Star-Bolt-2013-2019-HM25/263208205766?fits=Year%3A2017%7CModel%3ASCR950%7CMake%3AYamaha&epid=1350985204&hash=item3d486e7dc6:g:jeoAAOSw2XFUiqUx

Anybody own this pipe? Anyway any suggestions/links greatly appreciated. I'm in Florida. Thanks!
Welcome to the forum. Hopefully @SCRBen will give you the full story on the Danmoto. He knows all the in and outs with that exhaust, good and bad.

My recommendation is to send your ECU to Ivan for a reflash along with the exhaust and air intake changes. That was by far the best performance mod of these few that I have done.

1) K&N air intake
2) opened up my stock exhaust with a 1.5" bimetal hole saw. :nerd:
3) Ivan's reflash

Have fun!
 

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Discussion Starter · #3 ·
Thank you, Schu.

Still in learn mode right now but an ECU flash is definitely part of the plan. Is there a thread regarding the stock pipe mod you performed?
 

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Welcome, Jeff!
This group's seen/done a lot with the SCR.
Stuff's in here. You just might have to dig a bit.
Don't hesitate to ask, though! We revisit old topics often and happily!
 

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A well worn topic here and on the Star Bolt forum, so I'll just add a couple of links in addition to the previous advice. Turns out the stock muffler is pretty good and the features offered by aftermarket replacements tend to include one or more of the following:

Sound (louder and/or deeper rumble); Appearance (aesthetics); Ground Clearance; Weight; Performance (slight improvement in horsepower/torque).

If you are interested in performance gain and improved drivability, then a ECU flash is the best route to go. Ivan’s website has the details:
Ivan's Performance Products

The premium Akropovic is well regarded for its top construction quality and partnership history with Yamaha. They offer a catalyst insert (presently unobtanium) to remain compliant with emissions regulations, should you choose.

Word has it the more affordable Danmoto is obnoxiously loud. Here’s a good place to start:
https://www.yamahastarbolt.com/technical-discussion/list-of-compatiable-exhaust-for-the-bolt/

Cheers!
 

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Thank you, Schu.

Still in learn mode right now but an ECU flash is definitely part of the plan. Is there a thread regarding the stock pipe mod you performed?
Here's the video that got me to try it. Probably got 2k on this mod and still happy with it.

 

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Hiya mate, and welcome.

Here’s my thread on the Danmoto install - you’ll see all the details, but it needs just a little modding if you want it to fit properly (it’s designed for the Bolt), and you’ll need to supply some of the fixings yourself:

https://www.scr950forum.com/forum/633-exhaust-discussion/3761-danmoto-arrived.html

As for sound - “obnoxious”? - not sure about that, but it is loud. Here’s a little vid I made:


I’ve now swapped it for the Akrapovic, also mentioned elsewhere on this thread. Completely the opposite end of the spectrum. Expensive, but I picked up one cheap on fleaBay. It’s actually the one for the Bolt, but that’s alright by me, as that has a removable baffle - the one designed for the SCR does not (due to Euro 4 regs). It’s a lot quieter than the Danmoto, lower and rumbler (is that a word?!), but still very nice when you get on it. I still need to make a vid of that one.

As also said above, have a good look around - plenty of info on here.
Ben
 

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I’ll pop in here to say I finally got my Danmoto installed and have only been able to take one ride so far with the pipe. Nice sound, it’s only “too loud” if you typically ride with the Hoity-toity touring set with whisper quiet BarcaLoungers. Anyone that likes v-twins should like this exhaust. Yeah, it makes noise but that’s the point. As for any noticeable riding “feel” changes (not looking for power out of this one), I was too cold to notice. Yeah, still **** cold here. Snowing this AM.
 

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Revzilla has the Akrapovic muffler for the Bolt on sale for $100 off with free delivery so I couldn’t resist after all the good reviews. Revzilla’s service was awesome and the package arrived today almost the same time as the shipping notice!

The SCR application has a different bend to the link pipe, as SCRBen has already explained, but installation is the same for both models. The stock heat shields are reused to cover the stainless link pipe so be warned their 4mm hex bolts (5 in total) need judicious application of a propane torch to break loose the red Loctite used during factory assembly. Otherwise the hex sockets are guaranteed to round out (don’t ask how I know)!

Everything lined up perfectly, that is more than I can say for other aftermarket exhaust systems I’ve wrestled with in the past. Performance and sound wise I couldn’t tell any significant difference from stock, so this isn’t the muffler for those who want the sound of a Detroit Diesel under full load! The Akropovic just looks nicer in my opinion and appeals to my hoity-toity sensibilities, especially since Akropovic is the successful upstart to displace Yoshimura on the Euro scene.
 

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Revzilla has the Akrapovic muffler for the Bolt on sale for $100 off with free delivery so I couldn’t resist after all the good reviews. Revzilla’s service was awesome and the package arrived today almost the same time as the shipping notice!

The SCR application has a different bend to the link pipe, as SCRBen has already explained, but installation is the same for both models. The stock heat shields are reused to cover the stainless link pipe so be warned their 4mm hex bolts (5 in total) need judicious application of a propane torch to break loose the red Loctite used during factory assembly. Otherwise the hex sockets are guaranteed to round out (don’t ask how I know)!

Everything lined up perfectly, that is more than I can say for other aftermarket exhaust systems I’ve wrestled with in the past. Performance and sound wise I couldn’t tell any significant difference from stock, so this isn’t the muffler for those who want the sound of a Detroit Diesel under full load! The Akropovic just looks nicer in my opinion and appeals to my hoity-toity sensibilities, especially since Akropovic is the successful upstart to displace Yoshimura on the Euro scene.
If you haven’t had to get the link pipe separately, then I imagine you’ve got the Euro 4 pipe (with non-removable baffle). The Bolt pipe says ‘Designed for XV950’ on it (as per picture)?? With baffle removed, it’s considerably growlier than stock (tho nothing like Danmoto levels).
Ben
 

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OK, here’s some additional information that may just generate more confusion:

- - - - - - - -
The AKRAPOVIC WEBSITE for their Slip-On Line (SS)*Mufflers shows
** for YAMAHA XV950/R/RACER 2016 P.No. S-Y9SO3-HBBOSSBL/1
** for YAMAHA SCR950 2019 P.No. S-Y9SO4-HBBOSSBL

The Link Pipe:
"Within the system code S-Y9SO4-HBBOSSBL, 2 different link pipes are included together with the muffler":
L-Y9SO3SS for model SCR950 and L-Y9SO4SS for model XV950

CATALYST INSERTS
P-KAT-028 is shown in their installation instructions, but
P-KAT-040 / P-KAT-061 listed for XV950 (Bolt) / SCR950
These parts are back ordered here in the States.

- - - - - - - -
my REVZILLA ORDER didn’t give any Akropovic Part Nos. They just list the Bolt 2014-2019 Item as: P263891 / SKU941785

- - - - - - - -
ACTUAL PACKAGING LABELS
The attached picture shows the labels on the Akropovic packaging I received:
1. from box end
2. from link pipe (239073)
3. from clamp set (239997)

The muffler itself has no I.D. etched anywhere, other than the large Akropovic logo and presumably EC Type-Approval on the inside (photo).

Finally the end cap has 3 removable hex screws and what look like 3 rivets (photo).

- - - - - - - -
REMOVING BAFFLE
The maintenance instructions calls for “Muffler repack kit service intervals” so I assume you can remove the inner baffle. The instructions are rather generic, so maybe not.

By the way, the black exterior finish is like fine-grit sandpaper and a bear to clean!
 

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OK, here’s some additional information that may just generate more confusion:

- - - - - - - -
The AKRAPOVIC WEBSITE for their Slip-On Line (SS)*Mufflers shows
** for YAMAHA XV950/R/RACER 2016 P.No. S-Y9SO3-HBBOSSBL/1
** for YAMAHA SCR950 2019 P.No. S-Y9SO4-HBBOSSBL

The Link Pipe:
"Within the system code S-Y9SO4-HBBOSSBL, 2 different link pipes are included together with the muffler":
L-Y9SO3SS for model SCR950 and L-Y9SO4SS for model XV950

CATALYST INSERTS
P-KAT-028 is shown in their installation instructions, but
P-KAT-040 / P-KAT-061 listed for XV950 (Bolt) / SCR950
These parts are back ordered here in the States.

- - - - - - - -
my REVZILLA ORDER didn’t give any Akropovic Part Nos. They just list the Bolt 2014-2019 Item as: P263891 / SKU941785

- - - - - - - -
ACTUAL PACKAGING LABELS
The attached picture shows the labels on the Akropovic packaging I received:
1. from box end
2. from link pipe (239073)
3. from clamp set (239997)

The muffler itself has no I.D. etched anywhere, other than the large Akropovic logo and presumably EC Type-Approval on the inside (photo).

Finally the end cap has 3 removable hex screws and what look like 3 rivets (photo).

- - - - - - - -
REMOVING BAFFLE
The maintenance instructions calls for “Muffler repack kit service intervals” so I assume you can remove the inner baffle. The instructions are rather generic, so maybe not.

By the way, the black exterior finish is like fine-grit sandpaper and a bear to clean!
Yep....

S-Y9SO3-HBBOSSBL/1 denotes Euro 3 (XV950/removable baffle)

S-Y9SO4-HBBOSSBL denotes Euro 4 (for both XV950/SCR - non-removable baffle, but including the 2 link pipes you mention).

Because I got the first exhaust (XV950/Bolt only), I had to order
L-Y9SO3SS separately.

Did you get a straight linkpipe for the Bolt too then?

Having said that, yours does look to have a removable end cap - have you tried??? I always thought if it only said ‘Akrapovic’ on it (and not ‘Designed for XV950’ too), that it was the Euro 4 model. Maybe not.....?

Ben
 

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Geez. All this for a slip-on.
I assume Akropovic, being a Euro manufacturer, is trying to keep on top of the continuing revisions in EU emissions standards, hence the evolution (confusion?) in part numbers. My muffler is probably an older version, then.

Anyhow, jevers478 wanted a picture, so here it is. I prefer the new look over stock that sported more silver bling with its end cap and catalyst heat shield.
 

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Christ!! You could have reminded me you had a Bolt now?! That makes a lot more sense re link pipes etc!!

Still confused re you having a removable baffle, but never mind.

Ben
 
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