SXC Exhaust on 03 LC4 Adventurer

Discussion in 'Thumpers' started by Katoum, Aug 22, 2004.

  1. Katoum

    Katoum Adventurer

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    After reading the treads on the muffler cans available for the LC4 I have narrowed my choice down to these two.
    <TABLE cellSpacing=1 width=624 border=1><TBODY><TR><TD width="28%"> </TD><TD width="72%">LC4 Muffler Enduro version 94db. 58305081300 FITMENT: LC4 94-04, SC 94-04, Adventure 98-04, Duke 94-98

    </TD></TR><TR><TD width="28%"> </TD><TD width="72%">LC4 Muffler Supermoto version 98db. 58405081100 FITMENT: LC4 94-04, SC 94-04, Adventure 98-04, Duke 94-98

    </TD></TR></TBODY></TABLE>



    Has anyone out there run one of these as a replacement, near as I can tell the Enduro version has spark arrestor, and the Supermoto does not. The spark arrestor model adds about $125 dollars to the price, and is quiet, but does it flow similar to Supermoto, or should I say is the power gain worth the noise. The only thing I know for sure is that the shiny stainless Supertrap is going. I will consider offers, if anyone wants it.
    #1
  2. markjenn

    markjenn Long timer

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    Have you been over on ktmtalk.com? Lots of threads on LC4 exhausts including quite a bit of info on the tradeoffs between these two.

    The cliff notes version:

    The enduro muffler makes similar power to the stock supertrapp, sounds about the same, looks a lot better, and weighs about half.

    The supermoto muffler offers modest power gains (if jetted properly), is quite a bit louder, and might get you in trouble if you're riding in the woods without the spark arrestor.

    I went with the quiet pipe. Actually, I'm waiting for it now - it is backordered.

    Where'd you get the idea the enduro costs $125 more? According to online pricing, it's $30 less.

    - Mark
    #2
  3. Converted Soul

    Converted Soul On the search dude

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    The new Akrapovic, Jummie.



    [​IMG]
    [​IMG]

    999 Euro by KTM Sommer. I want one, but the price.

    Other (new) option: Akrapovic slip-on:


    [​IMG]

    With removable db-killer. Cost 472 Euro by KTM sommer.
    #3
  4. Mack

    Mack Gone, but never forgotten. RIP, Mack...

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    I expect Katoum is referencing the OEM (sparky equiped) 625 SXC silencer which is more expensive, rather then the non-sparky equiped Hard Parts SXC aftermarket silencer.

    I would suggest you get the one of these two, depending on your need for a Spark arrestor, as the SXC Supermoto is a tad loud, but would be fine for an SMC or something similar used on the street. (For those that already have these silencers on their 625's, IMHO there is no real advantage in the Hard Parts silencers over these OEM SXC silencers, at least not enough IMO to warrant the expense.)
    #4
  5. meat popsicle

    meat popsicle Ignostic

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    Isn't there one in the middle here? The KTM SXC "Competition". Here are the four I know of from KTM:

    1) The stock Supertrapp (and maybe some upgrade "race" version that I have read mentioned).

    2) The KTM SXC "Competition"
    [​IMG]
    Code: 58305081300
    Price:$269.95
    Application:
    LC4 1994-2003
    ADV 1998-2003
    Duke 1994-1998

    http://www.ktm-parts.com/Merchant2/...roduct_Code=58305081300&Category_Code=KTMHEEX

    3) The KTM SXC "Supermoto"
    [​IMG]
    Code: 58405081100
    Price:$299.95
    Application:
    LC4 1994-2003
    SC 1993-2003
    ADV. 1998-2003
    DUKE 1994-1998

    http://www.ktm-parts.com/Merchant2/...roduct_Code=58405081100&Category_Code=KTMHEEX

    4) The Mystery pipe (new one for me)
    [​IMG]
    Code: 58405083100
    Price:$299.95
    Application:
    LC4 1994-2003
    SC 1994-2003
    ADV. 1998-2003
    DUKE 1994-1998

    http://www.ktm-parts.com/Merchant2/...roduct_Code=58405083100&Category_Code=KTMHEEX
    #5
  6. Katoum

    Katoum Adventurer

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    Thanks guys for you input, and yes I was referring to the Sparky (Karisman) which is more. For me noise and weight, flow, appearance are all important so I'm getting the Sparky version. The Akaprovic would have been a good choice if they had designed the rear the same as the 950 Adventurer with a good looking insert, then added a spark arrester as a option, but thats not the case.
    #6
  7. markjenn

    markjenn Long timer

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    Sounds like you guys are saying that the SXC Comp silencer (#1 in the excellent pictures above, thanks - 58305081300) doesn't have the spark arrestor which is surprising as I was told otherwise. I wanted one with the spark arrestor.

    I looked up the stock OEM SXC silencer and the parts fiche shows 58305081001. The online sources say "no longer available" which i strange since it is shown as the part that's on a current 625 SXC. No price either.

    Unbelievable number of confusing options on this bike!

    - Mark
    #7
  8. Mack

    Mack Gone, but never forgotten. RIP, Mack...

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    I would think a guy would not have much trouble trading an aftermarket KTM Hard Parts SXC Supermoto or SXC Competition silencer for the OEM 625 SXC Competition silencer, as most guys end up taking the spark arrestor out, and many hack up the internal end cap pipe. IMHO, it would be worth trying to swap with someone on KTMtalk, might save you guys a lot of money.

    IIRC, there are basically 4 silencers available from the KTM Hard Parts catalog, the two SXC shaped cans (Competition and Supermoto) the straight can 58405083100, and the new Akrapovic silencer. IMHO, these get you a bit better looking can, that weighs 5 to 6 pounds lighter, with a mild performance boost at least in the case of the Supermoto can, but this comes at the cost of increased noise. None of these give a fraction of the performance increase of the Akrapovic full system.
    #8
  9. Katoum

    Katoum Adventurer

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    Thanks Mack, now I have changed my mind again :confused . Think I will give this a little more thought, might even run the stocker if I can find some extra disks, they are not in the parts book, any idea's where to pick up a couple.
    In the short term I think my money would be better served by installing a FCR pumper carb from a 625 SXC :thumb
    #9
  10. Taki

    Taki Waiting for Godot

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    Do you have first hand experience with the full Akrapovic? I am curious if the cost is justified. I mean, for a $1000 pipe are you picking up gains on top for racing applications and losing bottom end? Or is the improvement substantial across the board? I have only seen European dyno charts that show gains on heavily restricted bikes, and I am always skeptical of dyno numbers.
    #10
  11. Mack

    Mack Gone, but never forgotten. RIP, Mack...

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    No first hand, as I am not a fan of Ti for offroad use, and at $990 (after 15% off) it is just plain too spendy for my taste's.

    From what I have read on various forums, everyone in the know seems to find the same thing, nothing else comes close. There is a lot of combined LC4 experience, dyno runs, etc. over at the Monomaniacs site, and they seem pretty strong in their recomendation of the Akrapovic system. I would take a hard look at what the guys at Monomaniacs and KTMtalk have posted concerning this system, no one seems to be complaining, it really seems to make these bikes come alive.

    My point is primarily that adding a slip on for power IMHO is a waste of time, unless you just do not want to spend the time to modify the OEM Supertrap. (There is restriction in both the headpipes and in the silencer, but the silencers are pretty easy to open up.) I personally could not stand the OEM Supertrap, I did not want to spend time modifying it, and I liked the looks and sound of the SXC Supermoto silencer, so that is what I went with, but power gains were really not what I was looking for, or what I found with the addition of this silencer. I did the airbox mod, carb jetting and added the SXC Supermoto silencer all at the same time, so it is hard to say what made the biggest contribution, but based on the dyno runs, and more so my experience with my Duke II, I feel strongly that the airbox and jetting gave the biggest improvements, although all three are required to get the most out of each individual change.
    #11
  12. Mack

    Mack Gone, but never forgotten. RIP, Mack...

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    I forgot to add, that I had the same concerns about the power band being moved up on both the 03 high flow bikes and/or an Akrapovic equiped bikes. I have not been able to find dyno charts for otherwise identically equiped bikes, but so far everyone I have talked to has said that on a pumper carb / Akrapovic equiped bike, that this will not be a concern. (I expect my ADV is running right at 50hp, and now that it pulls hard all the way down to 2200rpm traction is already an issue.)
    #12
  13. meat popsicle

    meat popsicle Ignostic

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    Anyone have any info on the "straight can". It says "Racing" on the side so it must be lound and fast right? :lol3
    #13
  14. Buckster

    Buckster Banned

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    Would you please refrain from mentioning the Akro Titanium system, I need one.
    #14
  15. meat popsicle

    meat popsicle Ignostic

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    Want vs. Need...

    Doesn't the Akra push the powerband up the RPMs, making the bike less flexible in the dirt? Might be mistaken on this but I read that opening up the stock Supercrapp with more discs squeezes the powerband up. Big gains will be a trade-off, unless you go nitros oxide gas... now why haven't any of the power-freaks suggested a nitros system??? :lol3
    #15
  16. Buckster

    Buckster Banned

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    I makes it more flexible, including an overall increase in torque across the range and peak power occurs about 400rpm lower.
    #16
  17. meat popsicle

    meat popsicle Ignostic

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    Is this the correct dyno? Its from KTM Sommer's website; from the Akrapovics section. Wish they labeled their axes... I am unfamiliar with these things. Guess the taller one is the Akrapovics? :D

    [​IMG]
    #17
  18. creeper

    creeper Still alive...

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    #18
  19. meat popsicle

    meat popsicle Ignostic

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    Probably could attach it to one of them mapbook buttons.

    Sure would be interesting getting it all installed, taking the bike out on a nice lonely flat stretch of road, and pushing the button... :eek1

    If you replace "lonely flat stretch of road" with mountain side singletrack then either your balls drag on the ground or your nuts. :ricky (Is that redundant?)
    #19
  20. Buckster

    Buckster Banned

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    Akros chart, peak power 100rpm up but old peak power reached 1500rpm lower, also torque increase is very nice. Should make for a very tractable dirt performer.

    Attached Files:

    • akro.pdf
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    #20