HOW TO: Shorten Two Brothers Black Series Slip Ons? - Yamaha R1 Forum: YZF-R1 Forums
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post #1 of 29 (permalink) Old 11-04-2012, 08:40 PM Thread Starter
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HOW TO: Shorten Two Brothers Black Series Slip Ons?

was looking into making the pipes a little bit smaller so that they blend in with the tail more than they do now. anyone did this and can direct me on a small DIY so i dont mess up the cans? greatly appreciated.
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post #2 of 29 (permalink) Old 11-04-2012, 09:08 PM
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post #3 of 29 (permalink) Old 11-04-2012, 10:27 PM
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This is the best right up that I have seen. Very well written and lots of good pics.


http://www.customfighters.com/forums...ad.php?t=19309



Keep in mind that the more you shorten the exhaust the louder it will become.

Good luck with your project.


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post #4 of 29 (permalink) Old 11-05-2012, 10:47 AM Thread Starter
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Originally Posted by thepopularjock View Post
this is the best right up that i have seen. Very well written and lots of good pics.


http://www.customfighters.com/forums...ad.php?t=19309



keep in mind that the more you shorten the exhaust the louder it will become.

Good luck with your project.


................
awesome!! Thats partially the reason why i want to cut it .. I just want it about 2-3 " shorter to blent with the curves of the 2012 tail i feel like two brothers made their pipes extremely big for no reason!
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post #5 of 29 (permalink) Old 11-05-2012, 02:32 PM Thread Starter
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Quote:
Originally Posted by thepopularjock View Post
This is the best right up that I have seen. Very well written and lots of good pics.


http://www.customfighters.com/forums...ad.php?t=19309



Keep in mind that the more you shorten the exhaust the louder it will become.

Good luck with your project.


................
ehhhh this dosnt look too complicated but i perfer someone do this for me i have a bad gut feeling about this project simply because of the river part.. i never riveted anything other than a chain before..

anyone chime in about shortening a exhaust can locally in ny/nj area?
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post #6 of 29 (permalink) Old 11-05-2012, 02:34 PM
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post #7 of 29 (permalink) Old 11-05-2012, 02:47 PM
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I did one of those, they are really easy. Took about 30 minutes total. Getting the inside tubing the right length took the longest.

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post #8 of 29 (permalink) Old 11-06-2012, 08:07 AM
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You'll have your rear taillight smoked..

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post #9 of 29 (permalink) Old 11-06-2012, 08:09 AM Thread Starter
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Quote:
Originally Posted by Meister37 View Post
I did one of those, they are really easy. Took about 30 minutes total. Getting the inside tubing the right length took the longest.

Any chance u can give me a walk through on it?


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You'll have your rear taillight smoked..
U think so? This exhaust Dosnt produce much black residue now. Bike runs right not to lean not to rich just right
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post #10 of 29 (permalink) Old 11-06-2012, 10:53 AM
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Any chance u can give me a walk through on it?




U think so? This exhaust Dosnt produce much black residue now. Bike runs right not to lean not to rich just right
Pull the bolts off the endcap, remove the endcap, Drill the rivets out of the side pieces and remove the billet inner endcap, Remove the inner baffle tube and packing, tape the area where you want to make the cut, draw a perfectly straight line around the canister. Cut the canister, insert the inner endcap into the cut can, measure the size you need the inner baffle tube to be, cut the inner baffle tube and be sure to cut an extra 3/8 inch off for fitment. To mark the holes for the new rivets- install the inner endcap partially and mark on the same tape you used to cut the canister the proper index and proper distance back from the edge. Check fitment on the inner baffle tube and pre assemble without packing. if it all fits together, drill the holes to the proper size for the endcap and the rivets. Install baffle tube with packing, fit it all back proper and be sure to install the little black plates on the sides before you rivet. Install outer endcap. Drink beer.

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post #11 of 29 (permalink) Old 11-06-2012, 11:35 AM Thread Starter
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Talking

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Originally Posted by Meister37 View Post
Pull the bolts off the endcap, remove the endcap, Drill the rivets out of the side pieces and remove the billet inner endcap, Remove the inner baffle tube and packing, tape the area where you want to make the cut, draw a perfectly straight line around the canister. Cut the canister, insert the inner endcap into the cut can, measure the size you need the inner baffle tube to be, cut the inner baffle tube and be sure to cut an extra 3/8 inch off for fitment. To mark the holes for the new rivets- install the inner endcap partially and mark on the same tape you used to cut the canister the proper index and proper distance back from the edge. Check fitment on the inner baffle tube and pre assemble without packing. if it all fits together, drill the holes to the proper size for the endcap and the rivets. Install baffle tube with packing, fit it all back proper and be sure to install the little black plates on the sides before you rivet. Install outer endcap. Drink beer.

Very nice write up thanks bro... Just out of curiosity what advantages/disadvantages will this bring me being u did this before on this exhaust... Sounds fairly easy ill give it a try ...

Any suggestion on how much I should shorten it approximately on a 2012 r1
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post #12 of 29 (permalink) Old 11-06-2012, 11:38 AM
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Very nice write up thanks bro... Just out of curiosity what advantages/disadvantages will this bring me being u did this before on this exhaust... Sounds fairly easy ill give it a try ...

Any suggestion on how much I should shorten it approximately on a 2012 r1
A couple decibels louder, a little lighter. On the 2012, I dunno, did it on an R6. Same can design though.

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post #13 of 29 (permalink) Old 11-14-2012, 04:21 AM
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Is it possible to cut the ends at an angle to direct more to the side?
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post #14 of 29 (permalink) Old 11-14-2012, 06:00 AM
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Is it possible to cut the ends at an angle to direct more to the side?
not if you want the cap to fit properly

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post #15 of 29 (permalink) Old 11-14-2012, 08:18 AM
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What rivets have been used? I used rivets to shorten the can on my 02 r1 awhile back and they always vibrated out or broke. I want to do it with my 09 r1 but don't want to run into the same issue.


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post #16 of 29 (permalink) Old 11-14-2012, 08:57 AM
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What rivets have been used? I used rivets to shorten the can on my 02 r1 awhile back and they always vibrated out or broke. I want to do it with my 09 r1 but don't want to run into the same issue.


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You need to use these:


Not these:

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post #17 of 29 (permalink) Old 11-14-2012, 08:59 AM
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Obviously. There are many different types of metal rivets. Steel. Aluminum. Different grades. I was wondering exactly what people have used. Thanks


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post #18 of 29 (permalink) Old 11-14-2012, 09:02 AM
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Obviously. There are many different types of metal rivets. Steel. Aluminum. Different grades. I was wondering exactly what people have used. Thanks


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The top version do not "vibrate out" unless you have the wrong size

SS is what we have used

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post #19 of 29 (permalink) Old 11-25-2012, 08:01 AM
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You need to use these:


Not these:


Noriyuki Haga - #41


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post #20 of 29 (permalink) Old 11-25-2012, 08:52 AM
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Quote:
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was looking into making the pipes a little bit smaller so that they blend in with the tail more than they do now. anyone did this and can direct me on a small DIY so i dont mess up the cans? greatly appreciated.
Nothing to worry about. 2bros exhaust are already messed up

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