KTM Motorex Formula 4T 15W-50 Motorcycle Oil 1.0L — Semi-Synthetic for KTM 390/401, Engine & Wet Clutch Protection

KTM/Motorex Formula 4T 15W/50 (1.0L) is a genuine KTM Factory PowerParts semi-synthetic motorcycle oil engineered to protect and lubricate four-stroke KTM 390/401 engines while balancing performance and value.

Designed and supplied under KTM's Factory PowerParts program and formulated by Motorex (Oil of Switzerland), this 1.0L bottle delivers a semi-synthetic 15W-50 grade specifically tuned for the thermal and mechanical demands of KTM 390/401 engine platforms. It provides dependable lubrication for engine components, transmission gears and wet clutches, while remaining stable across a wide temperature range for everyday riding and track-ready use.

How does this oil protect my KTM 390/401 engine?

The Formula 4T 15W-50 combines synthetic and conventional base oils with additives that reduce wear and maintain oil film under pressure. That results in stronger protection for bearings, cam trains and cylinder walls during aggressive riding and long runs.

• High wear protection to extend component life.
• Thermally stable formulation that resists breakdown.
• Designed to lubricate both engine and gearbox surfaces.

Will it work with my wet clutch and gearbox?

Yes — Formula 4T is intended for four-stroke motorcycles where engine oil must also lubricate transmission gears and a wet clutch. Its friction properties allow reliable clutch engagement while protecting gear teeth under load.

• Compatible with wet-clutch systems used in KTM 390/401 models.
• Maintains consistent viscosity to prevent clutch slippage.
• Provides gear protection during frequent upshifts and downshifts.

Why choose semi-synthetic over full synthetic or mineral oil?

Semi-synthetic blends offer a compromise between cost and performance: they deliver improved thermal stability and wear resistance versus mineral oils, while costing less than full synthetics. For riders who want solid protection without premium expense, this formulation is a practical choice.

• Lower price point with enhanced performance compared to mineral oils.
• Better oxidation resistance and longer useful life than conventional oils.
• Formulation tailored for KTM engines to meet factory expectations.

How do I use the 1.0L bottle and what is the service convenience?

The 1.0L size is convenient for top-ups, single oil changes on smaller-displacement KTM models, or keeping a spare bottle in your garage. Follow your KTM owner's manual for capacity and oil-change intervals to maintain warranty and peak performance.

• 1.0L bottle size fits routine maintenance and emergency top-ups.
• Use per KTM service intervals and specified drain capacity for 390/401 engines.
• Factory-branded PowerParts packaging ensures authenticity.

Who is this for? Riders of KTM 390 and 401 platform motorcycles who want a factory-approved, cost-effective oil solution that balances protection, clutch compatibility and temperature stability. Whether you commute, ride sportily on weekends or prepare your bike for track days, KTM/Motorex Formula 4T 15W-50 offers a practical, high-quality lubrication option backed by Motorex engineering and KTM Factory PowerParts design.