12. Spidertrax offers custom 300M heat-treated chromoly axleshafts that have removable high-angle 4340 yokes. Since we are using a 35-spline Air Locker, we could also have built the housing to fit factory Dana 60 axleshafts to save money, or to carry as spares, though some special machining might have been needed to align the inner seals. We assembled the axle with a set of CTM 300M heat-treated chromoly Dana 60 U-joints. Custom shafts will require a short wait. Note the six-bolt high-steer arms that are also keyed into the knuckle for added strength.