A sprocket don't really have "parts", it's all one piece. I suppose you could talk about the teeth, maybe even tips and troughs, and the axle hole or whatever. But seeing it's all one solid unit it wouldn't be much point.
If the driver/freewheel isn't too badly worn you can keep using it even if you replace the sprocket.
a large sprocket
Chain wrenches are commonly sold in industrial equipment or auto parts stores.
It depends on whether you are talking about the front sprocket (the one at the pedals, called a chainring) or the sprocket at the rear derailleur. The lowest gear at the front is the smallest sprocket/chainring. The lowest gear at the rear is the largest sprocket. So if you combine the smallest sprocket at the front with the largest sprocket in the rear you have the lowest gear available on your bike.
To replace a bike sprocket, you will need to first remove the chain from the sprocket. Then, use a wrench to loosen the bolts holding the sprocket in place. Once the bolts are removed, take off the old sprocket and replace it with the new one. Secure the new sprocket in place by tightening the bolts. Finally, reattach the chain to the new sprocket.
Sprocket and chain and what?
depends if the sprocket is bigger or smaller than a stock sprocket.
To remove a sprocket using a sprocket removal tool, first, place the tool over the sprocket and ensure it is securely in place. Then, use a wrench to turn the tool in a counterclockwise direction to loosen and remove the sprocket. Be sure to follow the manufacturer's instructions for the specific tool you are using to avoid damaging the sprocket or tool.
first. take the left side rear wheel off. then remove the 4 bolts that hold the sprocket to the sprocket holder. then remove sprocket
A sprocket is a lever.
The sprocket on the nose of the crankshaft that drives the cam sprocket.
A minimum plain bore sprocket is a roller chain sprocket with a hole drilled through the center. A finished bore sprocket is a roller chain sprocket with a hole drilled through the center augmented by either a keyway or set screws.