Motorcycle Transmission Fluids & Oils

Unlike a passenger car having enough room for the powerplant, the space in most motorcycles is greatly restricted forcing engineers to design very compact and rather complex setups. When it comes to lubrication, the engine, gearbox, and clutch have different requirements for oil, however, many four-stroke bikes don't have separate reservoirs to keep three different liquids apart from each other and use the same fluid to lubricate everything. Besides difficulties in creating well-balanced oil, it provokes numerous disputes among those riders who own motorcycles with the possibility to change engine and transmission oils separately.

For instance, bikes by Harley-Davidson and Buell normally use three kinds of oil – engine oil, primary (clutch) oil, and transmission oil, which allows for making the most out of all the corresponding assemblies and reliably protect them from wear. Although some riders use one and the same lubricant in all these systems, it's better to use different products. As for transmission fluid meant for a manual gearbox, it usually has a higher viscosity than regular engine oils and provides smoother shifting, quieter operation, and longer lifespan of the assembly.

When it comes to wet clutch, it's recommended to make sure the fluid used there is compatible with such a kind of system and has no friction modifiers or extreme-pressure additives. Otherwise, it can lead to excessive clutch slippage and damage (which is why automotive oils cannot be used in motorcycles). In each case, it's wise to consult a service manual before getting one or another fluid for the bike. Our online store offers a large assortment of motorcycle transmission fluids & oils complying with the highest quality standards. Many of our products are specially formulated for both wet clutches and gearboxes working with a two- or four-stroke engine. Also, here you will find automatic transmission fluids and complete oil change kits containing all of the needed types of oil and filter.