Norman Rinehart
Fort Worth, TX & Southlake
CALL (888) 459-9958
         (817)  431-6664
Dirt Bike SAE 80
Synthetic Dirt Bike Transmission Fluid

Designed to Improve the Performance of Bike and Rider

Grabbing the holeshot in a race or maneuvering around obstacles on the trail requires a transmission fluid that doesn't slip or grab. AMSOIL Synthetic Dirt Bike Transmission Fluid is specifically formulated to provide consistent clutch feel, delivering riders confidence their clutch will respond the way they want.

It also guards against gear and clutch wear so enthusiasts can spend more time riding and less performing maintenance. AMSOIL Synthetic Dirt Bike Transmission Fluid is a cost-effective, high-performance alternative to original equipment manufacturer (OEM) fluids.

AMSOIL INC., the premier manufacturer of synthetic motorcycle lubricants, focuses on improving lubricant performance so riders can focus on improving their performance on the trail or the track. That's why AMSOIL is the Official Oil of AMSOIL GNCC and choice of professional riders and weekend warriors everywhere.

Confidence in Clutch Feel

AMSOIL Synthetic Dirt Bike Transmission Fluid's superior friction-durability helps minimize clutch slippage, providing riders consistent clutch feel during takeoffs or when navigating obstacles on the trail. Its lower viscosity delivers more aggressive clutch feel, while its superior performance helps instill in riders the confidence their bikes will perform consistently in all types of riding conditions.

Protects Against Gear & Clutch Wear

The intense environment inside a dirt bike transmission can shear lubricants, leading to viscosity loss. A lubricant that has fallen out of its intended viscosity range can fail to develop a strong fluid film between parts, leading to wear. AMSOIL Synthetic Dirt Bike Transmission Fluid's high-quality synthetic base oils withstand viscosity loss due to shear. It delivers excellent wear protection for gears and clutch plates, helping riders get the most out of their bikes.


Use in two- and four-stroke dirt bikes that use a separate sump, including those made by Honda*, Yamaha*, Kawasaki*, Suzuki*, Husqvarna* and KTM*.


Change AMSOIL Synthetic Dirt Bike Transmission Fluid according to the vehicle manufacturer's recommendations.


This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available via the Internet at or upon request at (715) 392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by theiruse. All products advertised here are AMSOIL-engineered for use in the applications shown


Does what it says it does extremely well. Impressive!!
I put this in my son's KX85. Great stuff. I just split the cases yesterday. Everything on the transmission side looked great. The clutch plates were hardly wore. Everything stayed really well lubricated threw the process too. I will continue to use                                        this product again and again.
Great product
This is an amazing product and have been using them for years
Great product for my TM 300mx 2-stroke!
I use this product in my 2 stroke & as a mechanic I can truly say it lives up to my expectations! Clutch is solid & great positive traction in the deep sand of FL!
Best transmission oil for dirt bikes.
I find heat is no issue using Amsoil Dirt Bike Transmission Oil. But the biggest improvement since my switch to the Amsoil is the better shifting I am getting. Missed gears are a thing of the past since I switched to the dirt bike tranny oil.
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