Gang! The cranks and bottom bracket are some cheapos I got from Amazon. Same with the cassette and 38t chainring.The derailleur is a Microshift Advent-X 10 speed, and it's matched to a Microshift 10 speed bar end shifter. I had to buy an inline barrel adjuster. Cassette is definitely heavy, but otherwise no complaints about the whole setup. It was easy for me to install and adjust and seems to shift nicely.