Product reviews:
Road bike groupsets: SRAM and Shimano shimano gears best to worst
shimano gears best to worst
Mountain Bike Groupsets shimano gears best to worst
shimano gears best to worst
Mountain Bike Groupsets | Tredz Bikes shimano gears best to worst
shimano gears best to worst
Shimano's XT 12-Speed Drivetrain is shimano gears best to worst
shimano gears best to worst