Kink Launch BMX Bike 2023The Launch is equipped with both a sealed integrated headset and sealed Mid bottom bracket, which drastically improves performance and virtually eliminates maintenance of these components. Combined with a parts package that includes Kink Stryker forks, Kink T875 8. 75 bars, and Mission Triumph 3pc tubular chromoly cranks, this bike is a new riders dream. ###section### Product Specs FRAME MATERIAL: Hi Ten Steel WHEEL SIZE: 20" TOP TUBE LENGTH: 20. 25"