So in laymans terms, the "thickness" of the oil at 200 degrees F for a 50 wt oil will be greater than that for a 40 weight oil. This "thickness" is what is protecting your bearings and other wear parts inside the engine/transmission. For the few dollars more per oil change, I'm choosing the 50 wt (specified by the manufacturer) over the 40 wt. 2016 onwards Power Valve tips. The info here is based on our experience and what we have learnt from working on our 2 stroke 2016 KTM 125sx. I am sure what you find here is also relevant to all the other KTM models with the new power valve (PV) setup. In 2016 KTM upgraded their 2 stroke motors drastically and the motor is very much a new one. KTM 125 SX 2003, Semi-Synthetic 2-Cycle Motorcycle Oil, by Lucas Oil®. Lucas High Performance Semi-Synthetic 2-Cycle Oil has been specifically developed to give a long trouble-free life to gasoline-powered 2-cycle engines. KTM TBI 2023 Gen - BEST OIL CHANGE VIDEO ON YOUTUBE (125 / 250 / 300 Two Strokes)Buy your motorcycle parts from AOMC.MX and support this channel at no extra Don't buy it from a KTM dealer as they come in an orange box and are much dearer than a Vertex in a grey box. You have a choice of piston size, new 125s tend to come with a 53.94 which is KTM playing safe. We run twin ring 53.95s in the praccy bike and single ring in the race bike. KTM recommend a 0.05 clearance. Posted March 27, 2010. Set the fork oil height at 100mm, then drain down to 120mm height and measure how many cc of oil drained in the 20mm difference. If the 120mm is too soft, you can add oil through the fork air bleed screw with a large syringe in a measured amount. You won't have to take the forks off with this method. Summary of Contents for KTM 250 XC-W 2018. Page 1 OWNER'S MANUAL 2018 250 EXC 250 XC‑W 300 EXC 300 XC‑W 300 XC‑W Six Days Art. no. 3213644en Page 3 DEAR KTM CUSTOMER Congratulations on your decision to purchase a KTM motorcycle. You are now the owner of a state-of-the-art DEAR KTM CUSTOMER sports motorcycle that will give you enormous The KTM 125 SX model is a Cross / motocross bike manufactured by KTM . In this version sold from year 2017 , the dry weight is 87.2 kg (192.2 pounds) and it is equipped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of and a maximum torque of . With this drive-train, the KTM 125 SX is capable of 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. NICECNC Orange Oil Change Drain Tool Compatible with KTM 125 250 300 400 500 525 530 SX SX-F EXC EXC-F XC XCF XCW TPI Six Days 1998-2022 Husqvarna TE 125 150 250 300 449 FE 250 350 450,See Fitment 4.2 out of 5 stars 76 4b1c5n.