The rear 49er drift slick wheels are extreme durable and will last 20 times longer than some basic blow molded wheels found on other trikes and are replaceable.

It's about a 5.75:1 far cry from the classic Big Wheel Trike with its puny 16-inch (40 cm) front and 8-inch (20 cm) rear wheels. Riding within the hub of a wheel isn't new – kids have been ...