Motorex Cross Power 4T 10W-50 Engine Oil — 4L PAO/Ester Fully Synthetic for Off‑Road Racing

Motorex Cross Power 4T 10W-50 is a fully synthetic PAO/Ester high-performance engine oil engineered for 4-stroke off‑road and racing motorcycles, delivered in a 4‑liter refill size.

Built for motocross, supercross and other extreme off‑road riding, this 10W‑50 formulation combines PAO base stocks with ester technology to maintain viscosity, protect gears, and preserve clutch feel under high heat and heavy load. Motorex developed this grade to meet the demands of modern high‑revving single‑ and multi‑cylinder four‑stroke engines. The oil is factory‑approved for use in many competition bikes and is the fill choice specified by KTM for their 4‑stroke models.

Why choose a PAO/Ester blend for off‑road motorcycles?

PAO base oils provide superior thermal stability and low volatility, while ester additives improve the oil’s film strength and lubricity. Together they reduce wear, keep moving parts protected in short bursts of extreme load, and resist thinning at high temperatures common in race conditions.

• PAO base gives consistent viscosity across temperature ranges
• Esters enhance film strength and reduce metal‑to‑metal contact
• Lower oil consumption and reduced volatility during hard riding
• Reliable shear stability for repeated high‑RPM use

How does Cross Power 10W‑50 protect my engine during hard riding?

This oil is formulated to guard pistons, bearings and cam trains when the engine is pushed hard. It resists breakdown from heat and maintains a protective lubricating film, which helps extend component life under the shock and vibration of off‑road competition.

• High film strength prevents wear under sudden load
• Shear‑stable viscosity keeps oil thickness consistent
• Thermal resistance reduces deposit formation at high operating temperatures
• Designed for frequent load cycles in short, intense sessions

Will this oil cause wet‑clutch slipping or affect shifting?

Motorex Cross Power 4T is formulated specifically to avoid clutch slip in wet clutch systems. It balances friction properties so the clutch engagement remains consistent while still protecting the gearbox and engine components.

• Friction characteristics tuned for positive clutch engagement
• No need for aftermarket friction modifiers
• Smooth shifting preserved under racing conditions
• Compatible with factory clutch plates and lining materials

Is this oil compatible with my bike and how often should I change it?

Cross Power 4T 10W‑50 suits most modern 4‑stroke off‑road motorcycles that call for a 10W‑50 or equivalent viscosity engine oil. Always follow the motorcycle manufacturer’s service intervals and recommendations; for race use, many teams shorten change intervals to protect engines under extreme stress.

• Recommended where 10W‑50 or similar viscosity is specified
• KTM selects this oil for use in their 4‑stroke models
• For everyday trail riding follow OEM intervals; for competition, change more frequently
• Check compatibility with aftermarket filters and seals if unsure

Who this product is for: Motorex Cross Power 4T 10W‑50 in the 4L container is aimed at serious off‑road riders, amateur and professional racers, and anyone who demands consistent lubrication under high heat and heavy loads. It’s a strong choice for KTM owners and for those running modern high‑revving 4‑stroke motocross or enduro bikes who want a fully synthetic oil that preserves clutch feel, minimizes wear, and withstands the rigors of competition and aggressive trail use.