Specialized's Jett 24 weighs in at 9.39kg, with an eight-speed groupset, and retails for £419. The 20in version prices at £369, weighs 8.76kg and has a seven-speed drivetrain.

Specialized’s super lightweight electric mountain bike isn’t for you; it’s for your kids. The premium bicycle manufacturer’s newest model, the Levo SL Kids, is a slightly smaller version ...