Skyjacker Suspension J40RSB 4-Inch Lift Softride Rear Leaf Spring

The Skyjacker J40RSB Softride rear leaf spring delivers a 4-inch lift with exceptional ride quality and durability. Engineered exclusively with American steel, this single leaf spring undergoes a precision shot-peening process where hard steel pellets are blasted at the surface at high velocities, compressing the steel to significantly increase tensile strength and extend service life.

Key Features:

• 4-inch lift height for increased ground clearance and aggressive stance
• Shot-peened American steel construction for maximum strength and longevity
• Bolt-style spring clips eliminate friction and binding for smoother articulation
• Full-length tapered leaf design distributes loads evenly across the entire spring
• Enhanced flex at leaf ends maximizes wheel travel without sacrificing spring life
• Reduces leaf-on-leaf friction and digging that causes premature wear

Unlike conventional springs that use restrictive cinch-style bend clips, Skyjacker's bolt-style clips allow unrestricted leaf movement for superior ride quality and articulation. The graduated taper design spreads stress across a larger surface area, preventing the concentrated wear points common in non-tapered springs. This engineering approach delivers the optimal balance of lift, load capacity, wheel travel, and ride comfort that Skyjacker's Softride series is known for.