ULTRA 1PLUS 4T 10W-40 Full Synthetic Motorcycle Oil 3-Quart — JASO MA2, API SN Protection

ULTRA 1PLUS 4T 10W-40 is a full synthetic motorcycle oil engineered for modern four-stroke bikes, delivering reliable clutch feel, gearbox protection, and high-temperature stability.

This full synthetic formulation meets API SN and JASO MA2 specifications to support motorcycles, ATVs, and powersports engines that require a 10W-40 viscosity. It balances shear resistance and thermal control to protect internal components under hard use, while maintaining smooth wet-clutch engagement and consistent shifting. The 3-quart pack is sized for multi-change maintenance or larger-capacity engines.

How does ULTRA 1PLUS 4T 10W-40 protect engines under heavy use?

The oil uses high-shear-stability base stocks and targeted anti-wear additives to guard bearings, cams, and cylinders against metal-to-metal contact during high RPMs and load. It resists viscosity breakdown so protective film remains intact over long runs and high temperatures.

• High-shear stability prevents thinning at elevated RPMs
• Anti-wear chemistry reduces component scuffing and scoring
• Thermal resilience minimizes sludge and varnish formation
• API SN performance for contemporary engine designs

Will this oil work with wet clutches and manual gearboxes?

Yes — ULTRA 1PLUS 4T 10W-40 is JASO MA2 certified, formulated to preserve friction characteristics needed for wet-clutch operation and to support positive, consistent gear engagement. It helps avoid clutch slip while preventing chatter during aggressive acceleration.

• JASO MA2 rating ensures correct clutch friction properties
• Stable film strength for smooth shifting under load
• Suitable for wet-clutch systems in sport and street bikes
• Compatible with most manual gearboxes used in motorcycles and ATVs

How does the oil perform across different temperatures and riding conditions?

The 10W-40 grade offers a broad operating window: easy cold starts with reliable flow at lower temperatures and robust protection at high operating heat. The formulation fights oxidation and maintains viscosity under stop-and-go commuting, spirited rides, or extended highway runs.

• 10W cold-flow aids quick lubrication during startup
• 40-grade protection sustains film at elevated engine temperatures
• Oxidation inhibitors reduce deposit formation over time
• Designed for both urban riding and high-RPM conditions

Which motorcycles and uses are best suited for this oil?

ULTRA 1PLUS 4T 10W-40 is geared toward modern four-stroke motorcycles, ATVs, and powersports machines that specify an API SN or JASO MA2 oil. It is appropriate for bikes with catalytic converters and works across street, off-road, and high-performance contexts where reliable clutch feel and gear protection matter.

• Street bikes and sportbikes requiring 10W-40 viscosity
• ATVs and side-by-sides used on varied terrain
• High-revving engines that demand shear-stable lubricants
• Machines with wet clutches and manual gearboxes

Who is this for: Riders and mechanics who need a dependable, full synthetic 10W-40 formulated specifically for modern four-stroke motorcycles and powersports equipment. Choose ULTRA 1PLUS 4T 10W-40 if you want robust anti-wear protection, consistent wet-clutch performance, and thermal stability during spirited rides, long touring days, or demanding off-road runs.