klr 250 exhaust. big gun evo r or fmf q4?

Discussion in 'Thumpers' started by davidb21, Sep 27, 2012.

  1. davidb21

    davidb21 Adventurer

    Joined:
    May 6, 2012
    Oddometer:
    90
    Location:
    Orange County, California
    Mods ive done to my 2004 klr 250 in case any other klr 250 riders find the info useful.

    exhaust & airbox- FmF Q4 slip on, pulled out the snorkle to the airbox, and replaced the stock air filter with a uni filter.

    jetting- i used the dynojet kit with the dj118 main and kept the pilot at the stock 35 keihin, i used the dj needle and set the e-clip at the 2nd position from the top of needle, slide lift hole drilled out with the provided bit, and put the fuel mixture screw at 3.5 turns out.

    random stuff added- trackside aluminum handguards with moose plastics, ricochet skid plate, magnetic oil drain plug, pro taper cr hi bend bars, and a UFO front fender.

    The tires im running and will probably stick with forever on this bike are kenda k270's.

    I have some progressive fork springs and 14 tooth front sprocket i need to install, will post update with results. Front sprocket is a JTF 512-14.


    [​IMG]
    #1
  2. davidb21

    davidb21 Adventurer

    Joined:
    May 6, 2012
    Oddometer:
    90
    Location:
    Orange County, California
    The main difference ive noticed with these mods is that it climbs through the lower rpms in each gear A LOT faster than stock.
    #2
  3. FuzzyNugs

    FuzzyNugs Adventurer

    Joined:
    Apr 22, 2011
    Oddometer:
    83
    Location:
    Loudoun County, VA
    Thanks for posting this update, I'm in the same boat now and leaning towards the FMF because it's cheaper or even half of that is the DG exhaust on eBay....hmm.

    Did you try changing sprockets at all?
    #3
  4. davidb21

    davidb21 Adventurer

    Joined:
    May 6, 2012
    Oddometer:
    90
    Location:
    Orange County, California
    No problem i'll keep updating this whenever i do more mods, i really like the fmf, i havent really heard about the DG before

    i havent done anything with sprockets yet but im thinking about putting a 14 tooth front
    #4
  5. 1994klr250

    1994klr250 Been here awhile

    Joined:
    Aug 16, 2007
    Oddometer:
    852
    Location:
    SE michigan
    In the past I have used a 14 tooth counter sprocket on my klr250. In 6th gear it turns about 500 rpm's more at 45 mph over the 15 tooth. The 14 tooth helps a bit in off road slow riding.

    I also have a big gun evo x full exhaust on it, which is fairly loud over the stock pipe. Between the carb mods and the exhaust its a great running bike.
    #5
  6. davidb21

    davidb21 Adventurer

    Joined:
    May 6, 2012
    Oddometer:
    90
    Location:
    Orange County, California
    Hey ive seen pics of your bike over at the klr650.net 250 forums, looks great

    I ordered the 14t yesterday so i should be trying it out next week
    #6