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Dirt Bike Brands - Other
Need Info on 99 KTM 250 SX!!!
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[QUOTE="jeb, post: 108391, member: 16219"] Here are the jetting specs I finally settled on for my 99 250 E/XC. This will be different from the SX in that the SX doesn't have the spark arrestor. Should be close, though. 45 pilot @ 1.5 turns out on the air screw 170-172 main jet NOZH (KTM needle) needle in the 2nd leanest clip (2nd from the top) Stock slide This is running at about 1000' most of the time. Summer temps. Pump 92 premium at 40:1 with yamalube 2R. It ran well for me with no spooge on both the stock exhaust setup and a full FMF setup (M21 or M29 pipes w/TCII). You may still get some spooge depending on your premix. One of my riding buddies has the exact same bike and doesn't like Y2R so he tried a bunch of other 2 stroke oils. They all spooged with this jetting anywhere from not bad to really bad. He finally went to Y2R and it cleaned it up. His bike still ran well with this jetting and was not fouling plugs just more spooge. With the cooler temps in the fall in the upper midwest I go to the middle clip on the needle to richen it up just a bit. Suspension Clickers: (remember the SX has different springs and valving then the MXC/EXC) Fork comp = 11 out Fork reb = 11 out Shock comp = full soft Shock rebound = 8 out Dynamic sag is 100mm Static sag is 25mm Stock springs Modifications: Scotts SS; applied 3x clamps; Aloop Pacemaker 3 enduro computer; Holeshot billet hyd clutch lever w/needle bearings; shorty front brake lever; Tag and protaper bars; Moose alum hand guards; braided steel hyd clutch line; all 3 FMF pipes; FMF Turbine Core II; SRC 3x clamp barkbuster inner mounts; Acerbis fork and front rotor guards; moose super tubes; Steahly offroad bash plate; Scott's billet sharkfin; KTM solid rear rotor; Dunlopad Pro-mx rear pads; EE and IMS Proseries footpegs; EE hyd clutch slave protector; EE rear wheel spacers; delta v-force reeds (dropped the pilot 1 after install); MSR taller, softer seat foam and seat cover; Kstyle shroud and airbox graphics; FMF swingarm graphics; clean, no spooge jetting; EE shock revalve; Flatland Racing pipe guard; fork boots; DeVol radiator guards. This bike was stone reliable for me. NOTHING ever went wrong with it that wasn't rider/tree/ground induced. :) I raced it for 1.5 years in enduro's and hare scrambles. [/QUOTE]
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Need Info on 99 KTM 250 SX!!!
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