Injen Intake Systems are carefully engineered to guarantee fit and maintain throttle response. Injen Technology manufactures their own intakes from 6061 T-6 aluminum alloy. Each intake is CNC mandrel bent from aerospace quality alloy to ensure the lightest design possible. Tube length, bend radius, and pipe diameter is carefully selected for each application. Brackets are CNC machined from 1/4" thick 6061 T-6 aluminum and are tig welded. All necessary hardware is included and intakes are backed by our limited lifetime warranty.