The new Zulu One builds on its legacy of innovation with significant weight reductions and groundbreaking BALANCE-TEC™ conversion system. The patent-pending BALANCE-TEC system is the first-ever balance-bike-to-pedal-bike conversion that doesn't compromise pedaling performance. The Zulu One features: A new smaller rear cog combined with a smaller chainring reduces weight while maintaining climbing-friendly gear ratios Adjustable rear dropouts enable precise chain tension and wheelbase tuning THRU-TUBE seat tube design increases fit range to accommodate growing riders Sealed cartridge bearings throughout for superior durability High-volume Kenda Booster tires for improved traction and ride comfort Hydraulic disc brakes deliver category-leading control and safety