Strider Harley-Davidson No-Pedal Balance Bike The #1 Selling, Most highly rated, Highest Reviewed Balance Bike in the World. STRIDER has the youngest starting age: 18 months. If they can walk they can ride! The Most Adjustable Seat & Handlebar Height of any Balance Bike. STRIDER gives children the Easiest Transition to a Pedal Bike. The only bike or ride-on toy your 18 month to 5 year old child will ever need, all in one package.