So powerful, it’s criminal. A lethal mix of speed, BK2’s accuracy, and BK3’s explosive power, the BK4 is the best wood construction innovation to date, making you dangerous from the start. The BK4’s front-end low-deflection technology has been redesigned to include our patented Vault-Plate construction and an all-new KTRL black hard tip for maximum speed, durability and control. Make a killer statement with the BK4’s bold look, seamless transfer of energy and deadly accuracy. Harness BK4’s lethal power and leave your opponent at the scene of the crime.