Cassettes And Freewheels – Here at 4bike, we’ve got all the cassettes and freewheels you need, whether it’s high speed you’re after, or a little something extra to break into on the climbs. We have hardy cogs for those slogs through the long winter months, and one-piece super light race pieces to adorn your carbon machine. Whatever you need on the back wheel, we’ve got it.

Cassettes are an essential component of drivetrains for bikes as they give you the different gears you need for climbing and descending. Both road and mountain bikes use cassettes with derailleurs to change gears. 12 speed cassettes are for high end MTB groupsets while 11 speed cassettes are available for both road and mountain bikes. High end cassettes are lighter weight and offer slicker shifting performance.