Kink Gap XL 21 - Inch BMX Bike (Trans Black) High-grade BMX bike for professional or recreational use for riders 9 and older Black Cherry 21 inch toptube frame with 13.75 inch chainstay Durable competition-grade chromoly steel frame with chromoly forks and chromoly Uptown bars Easy to assemble Lifetime warranty against workmanship defects; one-year warranty against malfunctioning parts