Motorex – Top Speed Synthetic 15W-50 4-Stroke Engine Oil

Motorex Top Speed Synthetic 15W-50 is built for riders who expect smooth, consistent performance across every ride. Using Motorexs MC (Molecular Converted) technology, it refines premium base oils to deliver full-synthetic-level protection, excellent film strength, and reliable clutch feel in demanding conditions. Its engineered for medium to large displacement 4-strokes but its also the recommended transmission oil for KTM, Husqvarna, and GASGAS 2-stroke models, trusted by the manufacturers themselves.

Why we like it: its a true do-it-all oil. It runs clean, keeps engines and gearboxes quiet, and holds up under heat without fading or thinning out. Whether youre hammering laps or logging long miles, it delivers steady oil pressure, smooth shifting, and noticeably less clutch chatter or drag.

Why itll work for you: its designed to handle the heat and friction of modern motorcycles from 4-stroke engines to 2-stroke transmissions. With JASO MA2 certification and API SM/SN/SP ratings, it ensures smooth clutch performance and excellent wear protection. Stable, durable, and manufacturer-backed, Motorex Top Speed 15W-50 is the one oil you can confidently run in both your 4-stroke and 2-stroke machines.

Key Features:

• Fully synthetic, high-performance 4-stroke oil
• High friction coefficient
• Decreases oil consumption; protects against wear
• No moly additives
• Optimized clutch performance according to JASO MA