Approx. 40mm Lift at 150kg Load. Formula 4x4 leaf springs are designed and tested for Aussie conditions! Engineered to tackle Australias harsh conditions| Formula 4x4 leaf springs are perfect for trade vehicles| commercial vehicles and enthusiast 4WDs. Formula 4x4 leaf springs are suited to carry a range of front and rear loads. Providing both comfort and heavy-duty leaf spring options incorporating a range of special features| ensuring you get the right ride for your 4WD.