Injen intakes are high-performance, dyno-proven intakes made of CNC mandrel bent 6061 T-6 aluminum alloy. All Injen intakes are carefully engineered for a perfect fit and superior performance. Many non Injen intakes in the market are made of 3.00" diameter tubes. This may cause friction between the battery and such intakes, dented hoods and an unbalanced air fuel ratio which can be harmful to your engine. Injen Technology has taken extra measures to ensure that the consumer gets what they paid for: optimum throttle response. Injen has in-house capabilities for bending 2.25",2.50", 2.75" and 3.00" diameter intakes on various bend radii. We polish all intakes for those who are conscious of aesthetics along with horsepower gain. With the use of 1/4" thick 6061 T-6 aluminum and precise CNC machined brackets and adapters, Injen guarantees an exact fit every time.