The 1935–1948 Mopar SuperSlide Multi-Leaf Rear Drop Leaf Springs (Pair) by Posies (Part #PL35-48L) is a direct bolt-in rear suspension lowering solution engineered for pre- and post-war Plymouth, Dodge, Chrysler, and DeSoto passenger cars (Coupes and Sedans).
Designed to lower the vehicle's rear end by 3 inches below stock ride height, these leaf packs replace worn, stiff, or sagging factory units to deliver a classic lowered profile while dramatically improving ride quality.
Product Overview & Performance
Original vintage Mopar leaf springs suffer from heavy inter-leaf friction, binding, rust, and squeaking over time. Posies addresses this by integrating their signature moly-nylon SuperSlide buttons between leaf tips. This eliminates leaf-on-leaf grinding, allowing the spring leaves to flex smoothly over bumps for a remarkably soft and compliant ride.
These springs install directly into original 1935–1948 Mopar factory frame mounts without requiring cutting, welding, or chassis modification.
Key Features & Design Highlights
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3" Custom Lowered Stance: Drops the rear chassis 3 inches below original stock height for a level, sleek stance without sacrificing suspension travel.
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Broad Mopar Fitment: Engineered specifically for 1935–1948 Plymouth, Dodge, Chrysler, and DeSoto Coupes and Sedans.
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Direct Chassis Bolt-In: Drops directly into original factory frame hangers and rear shackle locations.
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SuperSlide Inter-Leaf Damping: Moly-Nylon friction-reduction buttons eliminate metal-on-metal squeaks, rust binding, and stiff suspension motion.
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Pre-Installed Front Bushings: Comes complete with pre-pressed front spring eye bushings to speed up chassis assembly.
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American-Made Quality: Hand-assembled and tour-tested in the USA using premium 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: PL35-48L) |
| Vehicle Fitment |
1935–1948 Plymouth, Dodge, Chrysler, and DeSoto (Coupes & Sedans) |
| Stance Drop |
3.0" Lowered Rear Stance |
| Inter-Leaf Damping |
Moly-Nylon SuperSlide Friction-Reduction Buttons |
| Included Hardware |
Sold as Pair; Pre-Installed Front Spring Eye Bushings |
| Package Weight & Size |
Approx. 70.0 lbs per Pair (54.00" L x 8.00" W x 5.00" H) |
Installation Notes & Recommendations
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Associated Mounting Hardware: To complete installation safely and eliminate rear-end play, Posies offers replacement rear shackle kits and chassis mounting hardware specifically matched to 1935–1948 Mopar chassis configurations.
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Pinion Angle Check: When dropping vintage Mopar rear axles 3 inches, verify drive shaft working angles and rear axle pinion angle alignment during installation.
