The 1949–1951 Ford Car SuperSlide Multi-Leaf Rear Leaf Springs (Pair) by Posies provides a direct bolt-in rear suspension solution for iconic "Shoebox" Ford models (Custom, Deluxe, Victoria, and Convertible). Available in both stock OEM height (Part #303) and a 3" lowered stance (Part #301), these spring packs replace sagged, fatigued, or rigid factory units to restore handling control and ride quality.
Product Overview & Performance
Original factory leaf packs suffer from metal-on-metal friction, binding, and squeaking over time. Posies resolves this by integrating their signature moly-nylon SuperSlide buttons between leaf tips, eliminating inter-leaf grinding and allowing the spring pack to flex smoothly over bumps.
Whether restoring a factory-spec driver or building a low-slung lead sled custom, these springs drop directly into original chassis frame hangers without cutting, welding, or chassis modification.
Series Stance Options
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Part #303 (OEM Stock Height): Engineered to original factory dimensions to restore standard rear ride height, ground clearance, and suspension geometry.
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Part #301 (3" Lowered Drop): Lowers the rear profile 3 inches below original stock height for a clean custom stance while preserving full suspension travel.
Key Features & Design Highlights
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Direct Bolt-In Fitment: Mounts into original factory front frame hangers and rear shackle locations.
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SuperSlide Inter-Leaf Technology: Embedded moly-nylon friction-reduction buttons eliminate squeaks, rust binding, and leaf drag for a noticeably smoother ride.
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Pre-Installed Front Bushings: Comes complete with pre-pressed front spring eye bushings to streamline chassis installation.
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American-Made Quality: Hand-assembled and tour-tested in the USA using high-tensile tempered spring steel with proven 100,000+ mile reliability.
Technical Specification Matrix
| Feature / Metric |
Technical Specification Detail |
| Manufacturer & Part # |
Posies Rods & Customs — P/N: 303 (Stock) / P/N: 301 (3" Drop) |
| Vehicle Application |
1949, 1950, and 1951 Ford Passenger Cars ("Shoebox" Models) |
| Stance Options |
OEM Stock Ride Height (#303) or 3" Rear Drop (#301) |
| Inter-Leaf Damping |
Moly-Nylon SuperSlide Friction-Reduction Buttons |
| Included Hardware |
Pre-Installed Front Spring Eye Bushings |
| Package Weight & Size |
Approx. 58.0 lbs per Pair (51.00" L x 8.00" W x 5.00" H) |
