Pro-werks 4130N Chromoly Front Axle
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Part Number and Specifications
For Stiletto Spindles
Part # C42-448
36 in. Wide, 6 in. Drop, 6 in. Flat, Stiletto Bosses
1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing
Part # C42-447
39 in. Wide, 6 in. Drop, 6 in. Flat, Stiletto Bosses
1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing
Part # C42-449
40 in. Wide, 40 in. Flat, Stiletto Bosses
1-5/8 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 Bosses
1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing
Part # C42-437
39 in. Wide, 6 in. Drop, 6 in. Flat, SPE Bosses
1-1/2 in. Outside Diameter, 0.120 in. wall 4130 Chromoly Tubing
Part # C42-439
40 in. Wide, 40 in. Flat, SPE Bosses
1-5/8 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.










