24/02/2016
Fresh oil and a clean air filter generally will keep your engine and transmission running right, but that's only two-thirds of your bike's mechanical make-up.
The rest is the drivetrain—the chain, belt or shaft that transfers power from your transmission to your rear wheel.
Depending on what type of final drivetrain you're running, you'll want to keep an eye on chain stretch, sprocket wear, belt cracking, or the condition and amount of oil in the shaft housing.
Chain drive systems generally are the most maintenance-intensive, although if you run a sealed chain (O-ring or some variation) and don't run aluminum sprockets (which are light, but wear relatively fast), you'll probably find a periodic minor adjustment is all you need.