There's no set answer to that, it depends on what your preferences are. If you want a bike that's easier to get moving - get a lower gearing(bigger sprocket). If you want a higher top speed - get asmaller sprocket.
That depends on what you are using it for. Obviously, if you are dirt biking, you should use a dirt bike, and otherwise use a street bike. Start out with what you are going to use the most - dirt (freestyle) or street racing.
freestyle, dirt, street
That would depend entirely on how you use your bike (motocross or woods). If you race it, what do you want it to do ... overall top speed, pull holeshots, etc. By the way stock gearing on the 98 is 13/51.
When comparing road bikes, consider factors such as frame material, weight, components, gearing, wheel size, and intended use. These factors can affect the bike's performance, comfort, and overall suitability for your riding needs.
When choosing a push bike for recreational use, consider the following top features: frame material, wheel size, suspension, gearing system, and brake type. These features can impact the bike's performance, comfort, and durability for your recreational activities.
You should use a lubricant specifically made for bike chains to keep it running smoothly.
When choosing a mountain bike for road use, look for features like lightweight frame, smooth tires, efficient gearing, and comfortable geometry. These features will help provide a smooth and enjoyable ride on paved roads.
When looking for a lightweight commuter bike, consider features like a durable frame, efficient gearing system, comfortable saddle, reliable brakes, and easy-to-use accessories for carrying items.
You should use a lubricant specifically designed for bike chains to keep it running smoothly and prevent rust.
For a 20-inch bike, you should use a 1/2 inch pitch chain with 1/8 inch width.
You should store your bike in a secure and covered area when it's not in use, such as a garage, shed, or bike rack. This will help protect it from theft, damage, and exposure to the elements.
Not really. It won't have the gearing and it won't let you get aerodynamic enough. Odds are you wouldn't even finish the race, let alone be competitive.