BERG Go Karts for sale. Classic, BMW, Buddy, Electric & Farm Tractor Karts. Allow your child to choose their favorite from our wide selection. Please drop us a line in the form below with any questions that you might have. We'd love to hear from you and will get back to you asap. LOCATION: Trampoline Sales UK, 21A 4th Floor, Silverstream House, 45 Fitzroy Street, Fitzrovia, London.