Skyjacker L40FS Softride Leaf Spring - 4

The Skyjacker L40FS is a premium 4-inch lift single leaf spring engineered with Softride technology to deliver exceptional ride quality and durability for lifted trucks and SUVs. Manufactured exclusively from American steel, this replacement leaf spring provides the perfect balance of load-carrying capacity and comfortable flex.

Key Features:

• 4-inch lift height for aggressive stance and increased ground clearance
• Shot-peened construction using high-velocity hard steel pellets to increase tensile strength and spring longevity
• Full-length tapered leaf design distributes loads evenly and prevents leaf-to-leaf binding
• Bolt-style spring clips eliminate friction and binding associated with traditional cinch-style clips
• Enhanced wheel travel and flex at leaf ends for superior off-road articulation
• 100% American steel construction for reliable performance and consistency

Skyjacker's proprietary shot-peening process compresses the steel surface, dramatically increasing the spring's tensile strength and allowing for maximum wheel travel without compromising service life. The full-length taper design reduces stress concentration points and prevents individual leaves from digging into adjacent leaves, ensuring smooth operation throughout the spring's travel range.