ULTRA 1PLUS 15W-50 Full Synthetic 4T Motorcycle Oil, 6-Quart Pack — JASO MA2 High-Temp Wear Protection

ULTRA 1PLUS 4T 15W-50 is a full synthetic motorcycle engine oil engineered for high-performance four-stroke bikes, offering robust wear protection, improved power delivery, and JASO MA2 wet-clutch compatibility.

Designed for riders who demand consistent performance on street, track, and trail, this 15W-50 full synthetic formula balances high-temperature stability with friction reduction to help engines run cleaner and last longer. It meets API SN standards and carries JASO MA2 certification to ensure reliable wet-clutch engagement—important for modern multi-purpose motorcycles. The six-quart pack is convenient for multi-service needs or shops, delivering professional-grade protection in a size that suits frequent maintenance schedules.

How does ULTRA 1PLUS 15W-50 protect engines under intense conditions?

This full synthetic formulation maintains viscosity at high temperatures to reduce metal-to-metal contact and limit wear during sustained high-rpm operation. Its additives form a stable protective film that resists breakdown, helping to keep moving parts shielded when the engine is under load.

• High-temperature viscosity control for consistent oil film at racing or towing loads.
• Advanced anti-wear chemistry reduces cylinder and ring abrasion.
• Stable shear resistance preserves film strength between oil changes.

Will this oil work with my motorcycle’s wet clutch and gearbox?

Yes—ULTRA 1PLUS 4T 15W-50 is JASO MA2 certified, which means it’s formulated for motorcycles where engine oil also lubricates the wet clutch and transmission. The formulation minimizes clutch slip and preserves smooth gear shifts while still providing engine protection.

• JASO MA2 ensures proper friction characteristics for wet-clutch engagement.
• Compatible with combined engine-clutch-gearbox lubrication systems.
• Reduces clutch chatter and preserves shift feel under load.

How does this oil help keep engines cleaner and reduce maintenance?

The synthetic base and cleaning additives limit deposit formation and sludge buildup, which keeps oil passages and rings clearer between services. Cleaner internals support more consistent compression and fuel efficiency versus oils that allow varnish or sludge to accumulate.

• Detergent technology reduces sludge and varnish formation.
• Helps maintain oil flow through narrow passages and galleries.
• Supports longer-lasting component performance with scheduled changes.

Is ULTRA 1PLUS 15W-50 suitable for both street and off-road use?

The oil is formulated to perform across a wide range of operating conditions, from stop-and-go city riding to demanding off-road or track environments. Its thermal stability and wear-reducing additives make it a versatile choice for riders who use one oil for mixed riding styles.

• Thermally stable for long runs and high-rpm riding.
• Resilient under dusty or variable-temperature off-road conditions.
• Meets API SN for modern engines and emissions systems compatibility.

Who is this for? ULTRA 1PLUS 4T 15W-50 full synthetic motorcycle oil is aimed at riders, mechanics, and small workshops who need a dependable, high-performance lubricant that supports wet-clutch systems. It’s a good fit for sportbikes, cruisers, standards, and many dual-sport motorcycles where 15W-50 viscosity is recommended. Choose this six-quart pack when you perform regular DIY maintenance, service multiple bikes, or require extra supply for back-to-back tune-ups.