Mountain Bike Chain Bounce. For this reason newer mountain bike rear derailleurs have new technology that they call a "clutch" that limits this. Much like a road or MTB, it's important to think about speed when you're picking out a chain for your BMX bike.
Stiff link connections cause the chain to skip. slip by pulling the pulleys up toward the gear which causes the chain to bounce and slip as a result. Every Trek mountain bike is loaded with features and details that will make any ride, on any trail, better. Made of high-quality materials, the long bristle won't leave a spot of dirt on the chain.
Chains are designed specifically for use with a certain number of gears.
That's the section of the bike frame that runs between the pedal cranks and the back wheel.
In some cases, a dropped chain is a one-off occurrence, but if it continues to happen then there's likely a good reason for it. They have special coatings that make their cleaning easier which will prevent the buildup of debris that results in rusts. Dirt and grime corrode both the frame and the components.