Review on Black Shimano Tourney A073 7/8-Speed Triple Crankset - 170mm, 30x39x50t by Ickey Case

I bought these to increase the sprocket set from 24-34-42. I also wanted to increase the resistance for a better workout and increase my speed. It was a simple setup. I had to make a few minor modifications to my bike and buy a new chain to accommodate the large chainrings. It took me a couple of weeks to get used to the new cranks after installation and tuning, but now my average pace has improved a lot. I went in from 4 min. The pace was reduced from 39 sec/mile to 4 min/mile.