Agreeing with chip, I have gotten incredible durability up to 60 hours on my 2012 150sx top end and piston still looked great !!! Ringed it and put it back together. I also run synthetic motorex crosspower 2t motor oil and bel ray synthetic 80w 90 gear oil in my transmission and it fixed my 2016 tc125's slight shifting issues under load. IL. Apr 21, 2012. #1. Like the thread title says.. I have a KTM 990 SM-T and recommended oil (above 32F) is 10w-50 Motorex or 5w-40 Motorex at lower temps. The KTM dealer doesn't even stock the 10w-50, instead recommending 10w-40 or 15w-50. Brand isn't my issue at all, but the grade is. At $16/liter, the Motorex is simply cost prohibitive. KTM Enduro Racing Team Technician, Harry Norton demonstrates how easy it is to change a front/countershaft sprocket on your KTM or Husqvarna motorcycle. The Well my 2006 KTM 125SX needs a oil a clutch oil change. My manual says 15W50 oil, but anywhere I go. They dont have it, Im ordering some Amsoil dominator soon, and they do have 15w50 oil. Would that be okay? Was also wondering if Bel-Ray Gear saver would be good? 75 or 80W. It would be great if I could use the Gear saver, as its available in View and Download KTM 125 SX owner's manual online. 125 SX motorcycle pdf manual download. Also for: 125 exc, 200 exc, 250 sx, 250 exc, 300 mxc, 300 exc. All KTM, All KTM Filters, All Filters, All KTM Oil Filters Filters, All Oil Filters Filters Other items of interest Tusk 4-Stroke Oil Change Kit $15.18 – $120.44 MSRP: $18.32 – $138.72 You save up to 13% Motorcycle KTM EXC 200 EXC Owner's Manual. Ktm owner's manual motorcycle 125 sx, exc 200 exc, xc, xc-w 250 sx, exc, xc, xc-w 300 exc, xc, xc-w (70 pages) Motorcycle KTM 125SX Owner's Handbook Manual. (45 pages) Motorcycle KTM 125 SX 2011 Setup Instructions. (17 pages) Tyre pressures and oil grade. gearbox oil-20w/40 0.73 qts. cooling system-1.26 qts. 50/50 mix 2-stroke oil-shell racing x/40 fuel grade-98 spark plug-ngk r 6918-b8 spark plug gap--.024" main jet-190 idle jet-48 needle position-3 pilot screw # of turns out-1.5 rear tire pressure-14 lbs front tire pressure-14 lbs keep air filter element well HxuQKUV.