The mountainthe wiggle mtb 2016 is our entry level mountain bike designed to get you out mastering the trails and tracks of off road riding whilst enjoying nature in a pure form shimano 21 speed drivetrainthe shimano 21 speed tourney drivetrain is the perfect combination of performance and durability ensuring reliable shifting whatever the conditions pedaling you through these gears is a set of forged alloy triple cranks with their forged alloy arms they are not only strong but light alloy