Yukon Gear Front 4340 Chrome-Moly Replacement Axle Kit For 77-91 GM / Dana 60 w/ 35 Splines Suspension>Leaf Springs & Accessories and has a smooth interior

and has a smooth interior surface for maximum flow

They utilize the vehicle's factory air inlet with no additional hardware

low-restriction racing muffler for uninterrupted flow

including squat

and there's no air moving through your radiator

Yukon Gear Front 4340 Chrome-Moly Replacement Axle Kit For 77-91 GM / Dana 60 w/ 35 Splines Suspension>Leaf Springs & Accessories and has a smooth interiorYukon Gear & Axle offers an extensive line of general replacement and high performance axles for passenger car, truck and SUV applications. High quality alloys and the latest in heat treating technologies provide a stronger than stock axle for off road, on the street, or at the track.