Suzuki DR-Z70 k9 MX Dirt Bike: One look at the DR-Z70's 10-inch wheels and 22-inch seat height, and you know this is a bike with ideal dimensions for up-and-coming riders. It also has performance features designed specifically for youngsters. It includes both electric and kick starting. Its 67-cubic-centimeter engine offers a smooth, controllable powerband and strong low-end torque. And, because it has a larger engine displacement than the competition, it boasts greater performance, which young riders will enjoy for years as they develop their skills.