Suspension is by no means necessary on a bicycle but front and rear shocks do provide a more comfortable ride on rough roads or bad-quality urban or city streets. Anyone who has ridden over cobblestones in cities, crossed tram or train tracks and tackled bumpy gravel trails will appreciate the smoother ride but suspension makes a bike safer too. Suspension systems on bicycles are becoming increasingly popular but this is also because more people are buying electrically-assisted push bikes. According to figures from Germany’s Two-Wheeler Industry Association, electric bike sales are still boomi…