Your drivetrain on your bike wears as you ride. When your chain is stretched and worn it will pop and skip under heavy load, like when you sprint or climb hills. The chain will jump from one gear to the next.
Under normal conditions, if you lube your chain every couple of weeks, your chain, cassette and chainrings should last about 3,000 miles. That's a lot of riding. Congratulate yourself and your bike with a fresh chain and cassette!
iCycle can replace your drivetrain quickly and get you back to what you love- riding !