How to Change the Oil in a 2019 KTM 50SX: Complete Guide by MotoSport.com
Shop parts for a 2019 KTM 50SX Dirt Bike.
Routine oil changes are essential for the longevity and peak performance of your 2019 KTM 50SX. Frequent oil changes–ideally every ride or every 1–2 hours of engine operation–help maintain the health of the clutch and gearbox. Here’s an in-depth, model-specific guide that walks you through the process with tips, required tools, and proprietary insights.
Tools & Materials Needed
- 13mm socket and ratchet wrench
- Socket extension bar (optional but helpful)
- Torque wrench (for precise reinstallation)
- Triangle or side stand (do not use center stand)
- Oil drain pan
- Funnel (small spout recommended for the refill plug)
- Fresh gear/clutch oil (see below for capacity and specs)
- Replacement crush washer (optional, highly recommended)
- Paper towels or clean rag (for cleanup)
- Gloves (optional, for cleanliness)
Oil Capacity & Type for 2019 KTM 50SX
- Factory Spec: 200ml (approximately 6.8 oz) of oil
- Recommended Type: Motorex Top Speed 4T or equivalent high-quality synthetic 2T gear oil
Model-Specific Call-Outs
- Oil changes are required frequently. Due to the small oil capacity and high clutch wear, change your oil every ride or every hour or two of engine time for the best clutch longevity and smooth performance.
- Use a side stand or triangle stand only. Do NOT use a center stand, as it prevents proper draining of the oil.
- Correct torque is crucial. The drain bolt should be torqued to 20 Nm (14.8 ft-lb) to prevent stripping or under-tightening.
- Crush washer replacement. Inspect and replace the crush washer at every oil change for a secure, leak-free fit.
- Cleanliness is critical. Debris in the fill or drain holes can enter the clutch—be meticulous about cleaning before opening.
Step-by-Step Oil Change Instructions
-
Warm Up the Bike
Start the 50SX and let it idle for 2–3 minutes. This will thin the oil and help it drain more thoroughly.
-
Prepare the Bike
Place the bike upright on a triangle or side stand. Make sure it is stable and level for an accurate drain.
-
Remove the Oil Filler Cap
The oil filler cap is located on the top right side of the engine. Removing it before draining allows air to enter and oil to flow out freely.
-
Locate and Remove the Oil Drain Bolt
Position your oil drain pan beneath the engine. Use a 13mm socket and ratchet to remove the drain (sump) bolt at the bottom of the crankcase. Allow all oil to drain completely–this may take several minutes.
-
Inspect and Clean
- Inspect the old oil for any metallic particles as a sign of clutch or gear wear.
- Clean both the drain bolt and the seat on the engine thoroughly. Replace the crush washer if worn or damaged.
-
Reinstall the Drain Bolt
Thread the bolt back in by hand to avoid cross-threading. Tighten to 20 Nm (14.8 ft-lb) with a torque wrench for accuracy.
-
Add Fresh Gear/Clutch Oil
Using a funnel, pour exactly 200ml of the recommended oil into the fill hole. Do this slowly to avoid spills or overflow. A slow, steady pour helps prevent air pockets.
-
Replace the Oil Filler Cap
Clean any oil from the area, then hand-tighten the cap securely.
-
Check for Leaks and Final Inspection
- Start the bike briefly and inspect the drain bolt and filler area for any oil leaks.
- Wipe down any spilled oil from the engine and exhaust to prevent smoking on next startup.
-
Dispose of Old Oil Responsibly
Take the used oil to a local recycling center. Never dump it in the trash or onto the ground.
Proprietary MotoSport.com Tips for Long-Term Care
- Store a pre-measured 200ml bottle of your favorite oil with your track bag for quick changes before or after each ride.
- Keep a spare drain bolt and several crush washers on hand. These are prone to dropping or wear, and having extras means less downtime.
- Log each oil change. Create a quick note in your phone to track oil changes, ride hours, and any observations about oil condition.
- Consider a magnetic drain bolt. This will help capture any clutch debris before it circulates to sensitive parts of the engine.
Final Call-Outs Specific to 50SX (2019)
- This guide also applies to 2013–current years, including the Mini and Pro Senior variants—these models use the same process and oil quantity.
- Avoid overfilling, as excess oil can lead to clutch drag or leakage through engine seals.
- Frequent changes are critical; skimping will dramatically shorten clutch life and potentially cause costly repairs.
MotoSport.com is your trusted resource for KTM maintenance parts, OEM filters, high-quality lubricants, and expert technical support. Keep your 2019 KTM 50SX running at its best and enjoy a worry-free ride every time.
Related Shopping Categories
Shop Motor Oil for a 2019 KTM 50SX Dirt Bike.
Shop Oil Filters for a 2019 KTM 50SX Dirt Bike.
Shop Oil Drain Pans for a 2019 KTM 50SX Dirt Bike.
Shop Tools for a 2019 KTM 50SX Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2019 KTM 50SX Dirt Bike.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.