AMSOIL 10W-60 100% SYNTHETIC DIRT BIKE OIL

AMSOIL 10W-60 100% Synthetic Dirt Bike Oil is a purpose-built synthetic motorcycle oil engineered to deliver consistent clutch engagement, superior wear protection and heat resistance in dirt bikes that demand a 10W-60 viscosity. It is the go-to oil for KTM and Husqvarna riders who want predictable performance from the gate drop to the checkers.

Dirt bikes operate under conditions that would destroy a conventional motor oil in short order. High-rpm operation, extreme heat, constant mechanical shear and a shared oil sump that must simultaneously protect the engine, transmission and wet clutch create a brutal environment for any lubricant. The wrong oil leads to clutch fade, inconsistent lever feel, accelerated gear wear and viscosity breakdown that leaves critical components unprotected when temperatures climb.

CONSISTENT CLUTCH FEEL FROM START TO FINISH
Clutch feel is everything on a dirt bike. A vague or fading clutch lever robs you of confidence on launches, kills your ability to feather through technical sections and can cost positions on race day. AMSOIL 10W-60 Synthetic Dirt Bike Oil is formulated with superior friction-durability properties that minimize clutch slippage, fade and chatter. In an extreme simulated-start test, AMSOIL Synthetic Dirt Bike Oil continued to deliver consistent clutch engagement through 32 simulated race starts. A leading OEM-branded oil showed inconsistent clutch-lever action and poor engagement after only 16 starts. The clutch plates lubricated with AMSOIL remained clean and in good condition, while the OEM oil plates revealed visible discoloration and wear.

PROTECTS GEARS, BEARINGS AND PISTONS AGAINST WEAR
A dirt bike engine shares its oil supply with the transmission and clutch. That single oil charge has to form a durable protective film on gear teeth, crankshaft bearings and piston skirts, all while resisting the constant mechanical shearing forces generated by high-rpm operation. AMSOIL 10W-60 Synthetic Dirt Bike Oil uses synthetic base oils that naturally resist viscosity loss, maintaining a thick protective barrier against metal-to-metal contact under extreme heat and load. Premium anti-wear additives provide an additional layer of defense to help extend component life and reduce maintenance costs. In Four-Ball Wear testing (ASTM D4172 at 40 kgf, 150°C, 1800 rpm, 1 hr), the DB60 formulation produced a wear scar of just 0.52 mm.

RESISTS HEAT AND VISCOSITY BREAKDOWN
Sustained high-rpm riding, hot ambient temperatures and slow-speed technical terrain all drive sump temperatures up. When oil thins out under these conditions, protection drops. AMSOIL 10W-60 Synthetic Dirt Bike Oil delivers a kinematic viscosity of 23.2 cSt at 100°C (ASTM D445), providing robust film strength at operating temperature. Its NOACK volatility is just 3.5% weight loss (ASTM D5800), and it maintains a high-temperature/high-shear viscosity of 5.8 cP at 150°C (ASTM D5481). These numbers reflect an oil that stays in grade and keeps working when conditions get severe. The viscosity index of 178 demonstrates excellent stability across a wide temperature range.

MAXIMIZES HORSEPOWER DELIVERY
Every bit of power matters in a dirt bike, and oil that creates excessive drag or allows clutch slip is power you never see at the rear wheel. AMSOIL 10W-60 Synthetic Dirt Bike Oil is specifically tuned using a combination of professional racer feedback and laboratory testing to balance clutch friction performance with minimal parasitic losses through the drivetrain. The result is an oil that helps put more of the engine's output to the ground.

DEVELOPED ON THE TRACK WITH PROFESSIONAL RIDERS
AMSOIL's Racing Is Research program means this oil was not just formulated in a lab. It was tested extensively in the race bikes of professional riders. Racer feedback on clutch feel, shifting quality and engine response was combined with analytical lab testing to fine-tune the formulation for the specific demands of competitive and recreational off-road riding.

Specifications and Compatibility
AMSOIL 10W-60 Synthetic Dirt Bike Oil meets JASO MA and API SG, SJ, SH, SL specifications. It is designed for use in dirt bikes requiring 10W-60 motorcycle oil, including KTM and Husqvarna models. The oil is compatible with other synthetic and conventional motor oils, though mixing will reduce the performance benefits and life expectancy of the AMSOIL product. Aftermarket oil additives are not recommended. AMSOIL Synthetic Dirt Bike Oil is Warranty Secure and backed by the AMSOIL Limited Warranty.

Service Life
Change AMSOIL 10W-60 Synthetic Dirt Bike Oil according to the vehicle manufacturer's recommendations.