Part Number and Specifications For Stiletto Spindles Part # C42-448 36 in. Wide, 6 in. Drop, 6 in. Flat, Stiletto Bosses1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing Part # C42-447 39 in. Wide, 6 in. Drop, 6 in. Flat, Stiletto Bosses1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing Part # C42-449 40 in. Wide, 40 in. Flat, Stiletto Bosses1-5/8 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing For SPE Spindles Part # C42-438 36 in. Wide, 6 in. Drop, 6 in. Flat, SPE Bosses1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing Part # C42-437 39 in. Wide, 6 in. Drop, 6 in. Flat, SPE Bosses1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing Part # C42-439 40 in. Wide, 40 in. Flat, SPE Bosses1-5/8 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing Front Axle Overview Precision-machined chromoly axle is TIG welded and spindle bosses are mounted at an 8 degree angle to accommodate spindles. Width dimension is measured from center of tire to center of tire. Drop dimension is measured from bottom of axle to centerline of spindle. Stiletto bosses measure 2" tall and SPE bosses are 1.875" tall. Diagrams have been provided to confirm dimensions and compatability for your application. Note: Welding should always be performed by a qualified welder.
