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Hello, im new to this forum, just bought a 2015 klr 650, love the bike, hate the way it sounds, anyone have some advice on aftermarket exhaust systems, and if any mods to be made to carb, Thanks
 

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I've been researching this quite a bit lately. I haven't bought anything yet. But I decided I'm going to go with the fmf power core or q4. They are bracket mounted instead of using rubber straps, which I like. They appear to use allen bolts instead of rivets for ease of repacking. And they appear to have a dent in the inside of the unit for caliper clearance in the event of bottoming out. Then as far as jetting goes, I may hold off for a bit. But I plan to eventually go with eagle miles klx needle kit and the allen bolts for the top and bottom of the carb. At least that's where my reading has me now.
 

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factory jetting is poor; both too lean in some spots and too rich in others....blame it on the EPA compliant needle. Some will say do the 22 cent mod but for a few more dollars fix it right with a KLX Jet kit (Eaglemike being my preferred vendor). You can leave the jetting alone when the bike is bone stock but once you start changing things and freeing up the airflow, I'd do the jet kit.

Do the jet kit, pull the snorkle and add the silencer of your choice; short version of the silencer discussion is that many are too loud. Best is a LeoVince X3; 92db, spark arrestor and USFS compliant. I also have an FMF Q4 on one KLR but it's a bit louder (94db)....it is lighter and easier to install however. It requires periodic repacking, the LV does not.

hope this helps,
Dave
 

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I have an 2014 new edition, full Vance and Hines exhaust, stage 1 jet kit and k&n air fill, love the sound, BBBBBRRRRRAAAPPPP!!!


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I have an 2014 new edition, full Vance and Hines exhaust, stage 1 jet kit and k&n air fill, love the sound, BBBBBRRRRRAAAPPPP!!!


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I just watched a video of this pipe. Nice looking pipe and sounds nice. Does it use rivets on the can or allen bolts? Any issues on clearance with the rear caliper?
 

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I think rivets, had it installed when purchased new. Only issues was it touched the rear fender a little and I had to crop some off. Other than that it's awesome. Stock exhaust shield worked on it as well. Will post some pics, possible video once I make more that 15 posts. No rear caliper issues, that I know of, 8500 miles of joy. I will recommend doing the eagle Mike subframe bolt thing and the doohickey, just did the doo, mine was fine but the OEM doo is weak and EM replacement is far better. Also had my lower subframe bolts rattle out, one at a time, and the trunk rack bolts broke and I drilled and tapped them with more high strength bolts. I do 60/40 on-off road stuff. Love trail riding, the KLR is a bit of a pig but completely manageable, mine has been down twice and wasn't that bad for picking up. Engine guards are a must for radiator protection reasons, had to fix that out of my own pocket. Hear a lot about the thermo bob also, think I will do mine later this year or next, no overheating issues just helps keep a more constant temp instead of up and down like it does now. Loads of info on the inter web (Internet for you fancy folk).


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There is a ton of info on KLR exhausts out there. You need to consider;

- noise; many are VERY noisy, i.e. 96db+

- packing; some consider repacking a big deal, some don't.....depends what you are doing with the bike to some extent; putting on 20,000 miles a year commuting and repacking is an issue, 2000 miles of trail riding = not so much. Only the stock pipe, LeoVince X3 or the Staintune don't require packing. The Staintune costs as much as a used KLR.

- weight; this was a big one for me, a quick way to pare down excess porkage up high. My Q4 weights 5.7 lbs (stocker is 11 lbs) and my LV X3 weighs 7.5 lbs.

- Spark arrestor; you should have one if you ever venture off pavement and you're not allowed on the trails here without one. Needs to be USFS compliant here. Both the Q4 and LV have the USFS stamp

- caliper clearance; the Q4 has a factory "dent" to clear the caliper. The LV doesn't but is spaced out enough to clear. I've seen cheap cans with a hole where the caliper has punched through when the suspension bottoms.

- there is no power to be gained with a different header despite any hype to the contrary, in fact there is very little power to be gained with a different silencer either.....figure 2-3 hp with the corresponding jetting changes. I've seen advertised hp gains of up to 6 which I'd suggest is a load of crap. I did mine because of the weight, looks and sound (I still like quiet but my bikes now sound like motorcycles rather than lawnmowers)

For a budget pipe (albeit one that needs packing), the Lexx with the enduro/quiet insert is said to be OK. Some guys repack with a combination of packing and SS wool and it's said to last much longer.

For me, the LeoVince is the best combination of looks, weight and sound. If a couple extra db (remember db increases are NOT linear) is acceptable, the Q4 is a nice pce, very light and easy to install.

hope this helps,

Dave
 

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There is a ton of info on KLR exhausts out there. You need to consider;

- noise; many are VERY noisy, i.e. 96db+

- packing; some consider repacking a big deal, some don't.....depends what you are doing with the bike to some extent; putting on 20,000 miles a year commuting and repacking is an issue, 2000 miles of trail riding = not so much. Only the stock pipe, LeoVince X3 or the Staintune don't require packing. The Staintune costs as much as a used KLR.

- weight; this was a big one for me, a quick way to pare down excess porkage up high. My Q4 weights 5.7 lbs (stocker is 11 lbs) and my LV X3 weighs 7.5 lbs.

- Spark arrestor; you should have one if you ever venture off pavement and you're not allowed on the trails here without one. Needs to be USFS compliant here. Both the Q4 and LV have the USFS stamp

- caliper clearance; the Q4 has a factory "dent" to clear the caliper. The LV doesn't but is spaced out enough to clear. I've seen cheap cans with a hole where the caliper has punched through when the suspension bottoms.

- there is no power to be gained with a different header despite any hype to the contrary, in fact there is very little power to be gained with a different silencer either.....figure 2-3 hp with the corresponding jetting changes. I've seen advertised hp gains of up to 6 which I'd suggest is a load of crap. I did mine because of the weight, looks and sound (I still like quiet but my bikes now sound like motorcycles rather than lawnmowers)

For a budget pipe (albeit one that needs packing), the Lexx with the enduro/quiet insert is said to be OK. Some guys repack with a combination of packing and SS wool and it's said to last much longer.

For me, the LeoVince is the best combination of looks, weight and sound. If a couple extra db (remember db increases are NOT linear) is acceptable, the Q4 is a nice pce, very light and easy to install.

hope this helps,

Dave
Nice write up. I'd buy the LeoVince in a second if I didn't have to trim the fender. I love the fact that it never needs repacking.
 

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When I said crop it was more like a tad bit of shaving where the muffler melted not even an 1/8 of an inch deep semi circle in the fender, I did not chop cut and saw a large portion of my fender off. Get the LV, you will be happy, sorry to have misinformed you.


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When I said crop it was more like a tad bit of shaving where the muffler melted not even an 1/8 of an inch deep semi circle in the fender, I did not chop cut and saw a large portion of my fender off. Get the LV, you will be happy, sorry to have misinformed you.


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You didn't misinform me. Thanks for the reply. I love the sound of the XCR. And the brackets on the exhaust look beefy. Albeit, its getting hard to find websites that still carry the Vance and Hines. For whatever reason, a lot of sites clearanced them out. On the LeoVince, however, you actually have to modify the fender per the instructions.
 

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You didn't misinform me. Thanks for the reply. I love the sound of the XCR. And the brackets on the exhaust look beefy. Albeit, its getting hard to find websites that still carry the Vance and Hines. For whatever reason, a lot of sites clearanced them out. On the LeoVince, however, you actually have to modify the fender per the instructions.
FWIW, I didn't clearance my fender but it should have a small modification to prevent it from touching.

 

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It's a KLR, they should be dirty and have scratches. The little bit that touched my fender and melted was no big deal at all for me and the bike was brand new.

Also, once it's melted out of the way you won't have to worry about it.


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Also, once it's melted out of the way you won't have to worry about it.
LOL! Never looked at it like that. I'm guilty. I'm one of those guys that has to hose it down every time I go off road. Habit I guess. Always had street bikes the last 20 years and was always keeping them shiny.
 

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That's funny, I think I still have dirt from last season on my KLR. Heck, I put it down on each side, once on right side trying to get over a bump in some tall grass. Second time left side on a sandy (deep sand) trail north or my location. The second one scratched the left fairing and I had to take the radiator out and have it fixed, this was all done under the 700 mile mark.


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