NOS Nitrous Micro Switch - Holley 4150 Carburetors NG21 Duration 274 / 288

Duration 274 / 288

2 to 2-1/2 in Lift

Steel double adjusters increase adjustment capability of control arms

Fast Air TemperatureFAST is the leading developer of electronic fuel injection systems

Air Filter Oil

NOS Nitrous Micro Switch - Holley 4150 Carburetors NG21 Duration 274 / 288NOS Micro Switch Bracket 16512NOS Billet Holley 4150 Micro Switch Bracket Product Description: Nitrous Micro Switch Bracket Included Holley 4150 Carburetors Kit The use of nitrous oxide as a performance enhancement has been used since World War II. Allied aircraft used it for emergency boosts in airspeed and altitude capabilities. By the end of World War II, jet propulsion had been invented and the United States' government was losing interest in