Grease is the word. Bicycle grease that is. Chain lube and bearing grease keep your like running smoothly, but there are also any number of other bike parts that need to be regularly lubricated. It’s a good thing for you that we offer a wide variety of options to choose from.
A dry bike chain will let out an ear-piercing squeal and could snap mid ride, so you will need to keep in properly lubed. Clipless pedals need lubrication as well. Without lubrication, engagement and disengagement won’t be a smooth as it should be. Without lubrication, bike cables won’t glide through housings as they should.
With proper lubrication, derailleur pulleys will drive you insane with squeaking noise nearly impossible to pin down. Bike lubricant might be rather unglamorous, but it is a necessity.