In this installment of our ongoing series on upgrading components, I provide tips and trips related to the job of installing a new bottom bracket and crankset. I started this 2-part BB and Crank piece last week. I like to think of the crankset and the bottom bracket, as the heart of the bicycle. Your frame and wheels are important, but without a crankset and bottom bracket you wouldn’t be able to pedal your bicycle down the road. And, there’s a connection with how fast and hard your heart is working to power and turn the crankset.