www.couplemate.com manufacture Extreme Trailer springs for tough Australian conditions and are now available to American OEM camper and popup manufacturers. 

• 8 Leaf Eye to Eye Rebound Spring.  
• Eye to Eye 33 1/8".
• 3784 LBS for two springs.
• 2 3/8" x .275" x 8 leaf.
• Bush dimensions 5/8" x 7/8" x 2 3/8".
• Free Camber 6.22"
• Eye to Center Bolt 16.53"
• Hanger Centers 34.45"

Each spring is supplied with heavy duty spring hangers, shackle plates and 16mm greasable shackle pins.

Price per spring.