Maintenance Free Battery

A sealed battery that requires no additional water or electrolyte during its lifespan. Also known as an MF battery.

Master Link

A master link is used to connect the two ends of a motorcycle drive chain to make an endless loop (in fact, it is often called the connecting link). The master link usually consists of three components; the master link plate which has two pins fitted to it, a side plate, and a retaining clip. [...]

Multimeter

A special electrical meter that is often used to make multiple electrical tests, hence the name. Most multimeters can test for AC and DC voltage, current (amperage), and resistance. More expensive meters generally offer higher precision and advanced functionality such as the ability to check temperature (pyrometer) or engine speed (tachometer). There are two basic [...]

Muffler

An exhaust component that attaches to the exhaust pipe of a motorcycle or ATV to help decrease (muffle) engine combustion noise. Mufflers often consist of chambers and baffles to provide needed back-pressure and sound reduction. Some exhaust systems use replaceable fiberglass packing to help deaden noise. Also called a silencer.

Magneto

The term magneto is, of course, derived from the word magnet. It refers to a magnetic flywheel (usually bolted on the end of the crankshaft) spinning near a coil of wire, which will produce AC voltage. This AC voltage can either be used directly to power an ignition system or lighting system, or it can [...]

Mixing Two Stroke Oil

The demise of the two-stroke motorcycle has been a heartbreaking process to witness. Each model year another manufacturer announces that they are dropping another model from their lineup. And while some of the die-hard racing OEMs have talked up their commitment to the development of two-strokes we know the time will come when two-stroke motorcycles [...]