Shimano 7 speed drivetrainthe shimano 7 speed 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 qr wheelsetthe large 700c wheels offer great strength and are more than capable of withstanding the city roads with their potholes or quiet gritty country lanes the wheels come fitted wi