Spring Plate

Adjustable  spring plate zinc plated - closed type. EACH



Fits
Porsche 356 pre-A
Porsche 356A
Porsche 356B



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64434105

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Adjustable Spring Plate Zinc Plated - Closed Type.

Renew the rear torsion-bar mount on your classic Porsche 356 with this premium adjustable, zinc-plated, closed-type spring plate. Designed for models from the Pre-A era through 356 A and 356 B. The plated finish ensures long-term corrosion resistance, while the closed-type design offers improved durability and cleaner appearance. With its adjustable indexing feature, you can set ride height or corner balance precisely — ideal for restoration, spirited driving or show-quality builds.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche 356 1950-55
• Porsche 356A 1955-59
• Porsche 356B 1959-63

What This Product Does:

• In a torsion bar suspension, the torsion bars provide springing by twisting under load, and the spring plate is the mount that anchors and supports the torsion bar end, controls ride height, and maintains alignment of the bar mounting.
• An adjustable spring plate allows for ride-height or corner-balancing changes by indexing or re-positioning the torsion bar mount. The “closed type” design improves durability and sealing of the mounting area.
  
• The zinc plating adds rust/corrosion protection, especially important in older cars with exposed suspension components.
• By maintaining correct mount geometry, the spring plate ensures that the torsion bar works within its intended range, the rear axle remains located correctly, and the chassis retains its handling characteristics.

Symptoms & Signs Of Wear Or Needing Replacement:

• Ride height is inconsistent or cannot be set accurately — e.g., rear is lower or higher than specification, even after index adjustment.
• Rear axle movement, clunks or knocks from the rear suspension when the car is driven over bumps — indicating play in the torsion bar mount or plate.
• The torsion bar mount area shows visible corrosion, fatigue, or deformation of the plate or its mountings.
• Suspension geometry (camber, toe) drifting under load or cornering — because the torsion bar mounting is loose or shifting.
• Difficulty in re-indexing torsion bars or keeping ride height consistent. The adjustable feature may be worn or seized.

Why Replacement / Upgrade Matters:

• On early 356 cars these parts are old and often have corrosion, fatigue, or alignment issues from decades of use and environmental exposure. Replacing the spring plate restores structural integrity.
• An Adjustable + Zinc-Plated + Closed type unit offers several advantages:
• Adjustable for ride height or corner balancing if you’re restoring or modifying the car.
• Zinc plating for corrosion protection extends lifespan.
• Closed type design better seals the mount area, prevents debris ingress and offers improved durability.
• Correct ride height and suspension geometry are critical for handling and tyre lifespan — a compromised spring plate undermines these.
• For restoration projects, retaining or improving original design intent with quality parts is essential for driving feel and value.

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64434105

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Paper gasket for rear axle.


Fits:
Porsche 356 A/540.1
Porsche 356 B
Porsche 356 C

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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64433193101

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QuickChange spring plate kit
1 kit required per car



Fits
Porsche 356A
Porsche 356B - T5 Models


Change Torsion Bars and Adjust Ride Height

QuickChange spring plates make fast-work of torsion bar re-indexing and replacement.
Screw-type adjuster makes corner balancing and ride height adjustment a breeze. Pairs the high quality of the factory design with ease of servicing.

Setup is fast and easy
If you've ever re-indexed torsion bars to correct ride height, you can really appreciate the benefits of QuickChange.
Used in combination with our QuickChange Torsion Bars and Polybronze bearings, this spring plate allows rapid replacement or re-indexing of torsion bars.

• 5 minute torsion bar changes
• Fast and easy ride-height adjustment
• Accepts standard bushings

QuickChange Torsion Bar Changeout

QuickChange Torsion Bars can be extracted through the QuickChange Spring Plate without removing any bolts. Alignment settings are maintained. You don't even need to remove the wheel from the car. Changing torsion bars is a 5 minute per side operation!

Unlike other aftermarket spring plates, QuickChange Spring Plates bolt the plates together. This prevents the plates "halves" from sliding against each other and eliminates failures and metallic clicking noises common with competing products.
Can be used with any torsion bar and bushing that fits factory spring plates – not included – however QuickChange Torsion bars and PolyBronze Bearings are required to use torsion bar extraction features.

356 used two different systems of of spring plates, cover plate, bushings, and torsion bars

Pre-A, C and CS chassis:
Came equipped with 553mm long torsion bars. Cover plates have no center hole and a 4-nub style bushing. Spring plates have a short "tube" section that is not visible when installed because it does not pass through the cover plate. Outer bushings are larger 48mm Id and inner bushings have a smaller 45mm ID.

Polybronze may be used on these spring plates by fashioning a sleeve for the spring plate to increase its diameter to 48mm, and converting to a round bushing type coverplate.

Alternativley Elephant Racing Polybronze, QuickChange spring plates, and Torsion bars can be used on these cars provided all 4 components (torsion bars, cover plate, spring plate, bushings) are converted together.

A and B chassis:
Came quipped with 627mm long torsion bars. Cover plates have a hole in the center. Spring plates have a visible "tube" section that passes through the cover plate. Both inner and out bushings are larger ID about 48mm.

Elephant Racing Polybronze, QuickChange spring plates, and Torsion bars are all designed for direct fit with this combination.

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2080908

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Rear axle strut.



Fits:
Porsche 356 A  1955 - 1959
Porsche 356 B  1959 - 1963

Click 'Zoom in' for large parts diagram.
Diagram ref no 20

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64434105

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Rear Trailing Arm to Spring Plate Hexagon Nut. M12x1,5



Fits:
Porsche 356 B / 356 C
Porsche 911 1965-83
Porsche 911 Turbo 1975-77

Click 'Zoom in' for large parts diagram.
Diagram ref no 28.

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90003403601

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Rubber boot for real axle cross tube.

Fits:
Porsche 356 (1950 to 1969)

Diagram ref no 4

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PCG341911

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Rubber boot for real axle cross tube.  Durable rubber boot / sleeve that fits over the rear axle cross tube (driveshaft coupling area) on classic Porsche 356 models.  It protects the moving parts of the axle coupling from dust, dirt, and moisture while maintaining a flexible seal as the driveshaft.

Fits:
Porsche 356 (1950 to 1969)

Diagram ref no 4

Over time, the original boot can crack, split, or harden, allowing contaminants into the joint and accelerating wear. A fresh OE Match boot restores proper sealing protection and prolongs the life of the axle components.

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PCG341911

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Spring plate bearing kit with cover plates.
1 kit, req'd per car

Fits
Porsche 356 1948 - 1965

with Long tube spring plates or QuickChange spring plates

Spring plate bearing kit

Want to experience precision driving, faster lap times, improved road feel and feedback?

Our patented PolyBronze suspension bearings set a new standard for performance, ride quality and ease-of-installation. Regular polyurethane/plastic suspension bushings are obsolete!

PolyBronze is a precision bronze bearing encased in a polyurethane jacket. The combination delivers a smooth-ride with the extreme performance of a metal bearing.

✔ No Squeaks
✔ Smooth ride quality
✔ Easy installation
✔ Integral Grease fittings and grooves

Why PolyBronze Bearings Are Superior To Plastic Bushings

Suspension mounts are coarse sheet metal pressings. They tend to be out-of-round and have irregularities that deform ordinary polyurethane bushings, pinching and binding the friction surface. Polyurethane is “grippy” with an inherently high coefficient of friction and combined with pinching polyurethane bushings create a lot of friction. The result is a harsh ride and reduced tire adhesion.

PolyBronze have a rigid bronze bearing core that does not deform. The polyurethane jacket absorbs mount irregularities while the bronze inner bearing remains true, providing a free-moving machined-fit that rides on a precision race. Provided grease fittings make re-lubrication a breeze and a figure 8 groove keeps grease in place.

The combination delivers zero squeaks and friction-free suspension movement. Well suited to street or track, ride quality.

356 used two different systems of of spring plates, cover plate, bushings, and torsion bars

Pre-A, C and CS chassis:

Came equipped with 553mm long torsion bars. Cover plates have no centre hole and a 4-nub style bushing. Spring plates have a short “tube” section that is not visible when installed because it does not pass through the cover plate. Outer bushings are larger 48mm Id and inner bushings have a smaller 45mm ID.

Polybronze may be used on these spring plates by fashioning a sleeve for the spring plate to increase its diameter to 48mm.

Alternatively Elephant Racing Polybronze, QuickChange spring plates, and Torsion bars can be used on these cars provided all 4 components (torsion bars, cover plate, spring plate, bushings) are converted together.

A and B chassis:

Came equipped with 627mm long torsion bars. Cover plates have a hole in the centre. Spring plates have a visible “tube” section that passes through the cover plate. Both inner and out bushings are larger ID about 48mm.

Elephant Racing Polybronze bearings are designed for direct fit with this combination.

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2061601

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Spring plate in black - closed type. EACH



Fits
Porsche 356 pre-A
Porsche 356A
Porsche 356B



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64434105

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Torsion bar rubber sleeve INNER with rim . Rear axle.



Click 'Zoom in' for large parts diagram.
Diagram ref no 36

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64433313100

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Torsion Bar Rubber Sleeve With Rim.
Ensure your classic Porsche’s torsion-bar suspension remains quiet, stable and correctly aligned with this rubber sleeve. Designed for Porsche models such as the 356 A/B, this sleeve features a seating rim for precise positioning and helps isolate torsional loads while maintaining correct mount geometry. A critical yet often overlooked component in torsion-bar systems, this replacement sleeve restores proper bar support, reduces noise and ensures ride height and suspension behavior.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche 356A 1955-59
• Porsche 356B 1959-63

Diagram Ref No 36

What This Product Does:

• The sleeve cushions the torsion bar where it passes through or mounts to the chassis or spring plate. Because torsion-bars twist under load, this sleeve helps reduce metal-to-metal contact, absorb vibrations or harshness, and maintain correct bar location and alignment.
• The “with rim” detail likely means it has a flange or rim that seats against a plate or bracket, ensuring correct fit and preventing movement of the sleeve out of position.
• By keeping the torsion bar isolated and aligned, the sleeve helps maintain correct ride height, suspension behavior, and prevents unwanted noise, wear, or alignment shifts due to a loose or worn bar mount.

Symptoms & Signs Of Wear Or Failure:

• Clunks or knocks from the rear (or whichever end the torsion bar is mounted) when going over bumps, indicating the torsion bar is moving within its mount.
  
• Loss of ride height or inconsistent ride height, because the torsion bar may not be seating properly.
  
• Increased vibration or harshness being transmitted from the torsion bar area into the chassis or cabin.
  
• Suspension geometry changes / alignment drift, because the torsion bar may shift or twist out of its correct location.
  
• Visible rubber degradation — cracking, splitting, flattening, or the rim/seating portion being damaged. On inspection you may see the sleeve has collapsed or the rim no longer seats properly.
  
  

Why Replacement Matters:

• Over time, rubber components like this sleeve degrade from age, heat, load, UV exposure and the twisting action of the torsion bar. A worn sleeve compromises the mount of the torsion bar and therefore the overall behavior of the suspension.
• Especially in older vehicles or restorations, replacing such small components is critical to preserving the integrity of the suspension system rather than just chasing obvious wear points.
• For classic Porsche owners maintaining these older torsion-bar systems, ensuring these sleeves are in good condition means you’ll keep ride height correct, less unwanted movement, better durability, and fewer secondary failures (e.g., as the bar shifts it may overload other bearings or mounts).

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64433313100

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Torsion bar rubber sleeve INNER without rim . Rear axle.

Outer dia: 69mm
Inner dia: 48mm
Thickness: 31mm

Fits:
Porsche 356 pre-A / A  1950-1959
Porsche 356 B / C 1960-1965 (chassis >>131 720, >>154 229, >>88 663)

Porsche 911/912 1965-1967 (up to chassis #307325)

For 356 Pre-A, A, and B, 4 are required w/original covers, and 2 are required w/replacement covers. For all 356C models, 2 are required).

Diagram ref no 36

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64433313100

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Torsion bar rubber sleeve.
Rear Axle.

Outer dia: 69mm
Inner dia: 48mm
Thickness: 31mm

Fits:
Porsche 356A 1950-1959
Porsche 356B 1960-1965 (chassis >>131 720, >>154 229, >>88 663)
Porsche 911/912 1965-1967

Diagram ref no 36

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64433313100

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