Silkolene Pro 4 5W-40 XP 1L

Achieve maximum engine efficiency and protection with Silkolene Pro 4 5W-40 XP 1L, a premium ester-based fully synthetic motorcycle engine oil engineered for modern high-performance 4-stroke engines. Designed to deliver exceptional lubrication across a wide temperature range, this advanced oil provides outstanding cold-start performance, reduced engine wear, and long-lasting reliability.

Ideal for riders who demand superior protection in colder conditions or require rapid oil circulation on start-up, the 5W-40 viscosity grade ensures your engine performs at its best from the moment you start it.

Advanced Ester Technology for Superior Lubrication

Silkolene Pro 4 XP is formulated using cutting-edge ester-based synthetic technology, offering significant advantages over conventional and semi-synthetic oils. Ester molecules bond to engine components, creating a durable protective layer that remains in place even when the engine is off.

Key benefits include:

• Reduced friction and engine wear
• Strong oil film protection under high loads
• Enhanced lubrication during cold starts
• Improved resistance to thermal breakdown
• Cleaner engine internals with reduced deposits

Perfect for Modern 4-Stroke Motorcycles

This fully synthetic oil is specifically designed for modern 4-stroke motorcycle engines, making it suitable for both air-cooled and liquid-cooled systems.

Ideal applications include:

• Sports and performance motorcycles
• Commuter and daily-use bikes
• Touring motorcycles
• High-revving engines requiring consistent lubrication

Its advanced formulation ensures stable performance in both urban riding and long-distance touring.

Excellent Cold Start Performance (5W Rating)

The 5W-40 viscosity grade offers exceptional performance in colder conditions compared to thicker oils:

• 5W (Cold Start): Rapid oil flow during start-up reduces engine wear and improves protection in low temperatures
• 40 (Operating Temperature): Maintains strong lubrication and protection once the engine reaches operating temperature

This makes it particularly suitable for UK riders who experience colder weather and frequent stop-start riding.

Smooth Gear Changes & Wet Clutch Compatibility

Motorcycle engines often share oil between the engine, gearbox, and clutch. Silkolene Pro 4 XP is engineered to perform across all these systems.

With JASO MA2 approval, it ensures:

• Smooth and precise gear changes
• Reliable clutch engagement
• Reduced clutch slip under acceleration
• Consistent performance in demanding conditions

Cleaner Engine & Longer Service Life

Silkolene Pro 4 XP contains advanced detergent and dispersant additives that actively prevent the build-up of sludge and deposits, helping maintain engine cleanliness and efficiency.

Benefits include:

• Cleaner internal engine components
• Improved combustion efficiency
• Reduced emissions
• Extended engine lifespan

Technical Specifications

• Product Name: Silkolene Pro 4 5W-40 XP
• Oil Type: Fully Synthetic (Ester-Based)
• Viscosity Grade: 5W-40
• JASO Specification: MA2
• API Specification: SN
• Engine Compatibility: 4-Stroke (Air & Water Cooled)
• Container Size: 1 Litre

When Should You Use 5W-40 Motorcycle Oil?

5W-40 is recommended when:

• You ride in colder climates or during winter months
• Your manufacturer specifies a lower viscosity oil
• You want improved cold-start protection
• Your riding involves frequent short trips or stop-start conditions

Always check your motorcycle manufacturer’s recommendations before use.

When Should You Change Your Engine Oil?

To maintain optimal engine performance and longevity, oil should be replaced:

• At manufacturer-recommended service intervals
• When oil becomes dark or contaminated
• If engine performance drops
• When gear shifting becomes less smooth

Using a premium oil like Silkolene Pro 4 XP ensures reliable protection between services.

Why Choose Silkolene?

Silkolene is a globally recognised leader in high-performance motorcycle lubricants, trusted by professional riders, race teams, and workshops. Their oils are developed using advanced technology and tested under extreme conditions to deliver consistent, high-quality performance.

Why Buy From Rides R Us?

• High-quality motorcycle oils and service parts
• Competitive UK pricing
• Fast dispatch and delivery
• Trusted by riders and workshops nationwide
• Expert advice available