Crane Axle builds the ONLY 8620 Chromoly Steel outer knuckles on the market! Using 8620 Chromoly Steel instead of cast iron allows us to produce a lighter and stronger knuckle.
Crane's interlocking hi-steer arm design eliminates the need for a 5th or 6th bolt for strength. The Crane knuckle utilizes 9/16" hardware on the upper kingpin caps and steering arms.
Crane's Interlocking Outer Knuckle Kit includes:
- (1 Pair) Crane Interlocking Outer Knuckles
- (1Pair) Crane Interlocking High-Steer Arms
- (1 Pair) Crane Kingpin Caps
8620 alloy steel has a much higher carbon content than mild steel. The higher amount of carbon means increased strength. This material is characterized by a hard outer surface, combined with a ductile interior for higher strength. Minimum properties of 8620 (chrome-nickel-moly) alloy steel; Tensile Strength, psi: 97,000 Yield, psi 57,000. What does this mean for you? Crane's 8620 chromoly parts can take more abuse day in and day out then their competition, just ask anyone that uses them.