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Coil Springs REAR

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99133353115504/1KIT
Product Information
Product Information
Standard replacement coil springs - suitable for models equipped with a Sport suspension (option code: 030), with a Sport chassis PASM and PDCC (option code: 031).

SET OF 2
We strongly recommend replacing coil springs in pairs. 

Fits:
Porsche 991.2 Carrera 2 / 2S 2017 - 2019
Porsche 991.2 Carrera 4 / 4S  2017 - 2019
* Cars with Sport suspension (option code: 030)
* Cars with Sport chassis with PASM and PDCC (option code: 031)

Diagram ref no 8

This spring set supports the axle load and manages suspension movement during braking, acceleration, and cornering. Replacing both springs together ensures even load distribution, symmetrical ride height, and predictable handling response.

Installed within the suspension assembly, the coil springs compress and rebound with suspension travel to absorb road impacts and stabilise the vehicle body. Working together as a matched pair, they help maintain consistent tyre contact, steering accuracy, and ride comfort.

Coil springs weaken and sag over time due to constant load, mileage, and road conditions. Replacing only one spring can lead to uneven ride height and compromised handling. Installing a pair restores correct suspension geometry, factory stance, and predictable driving dynamics.

When to replace:
Ride height appears uneven or sagging
 Increased body roll or reduced handling precision
 Visible corrosion, cracks, or spring fatigue
 During shock or strut replacement
 As part of a suspension refresh or alignment correction

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99133353115504
99133353115504
99133353115

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99133353105504/991-2KIT
Product Information
Product Information
This kit consists of two coil springs for the rear axle. 

Suitable for Coupe, Cabriolet & Targa models equipped with standard PASM (PR 352, 475, or 477).

rear
Porsche 991-2 Carrera 2017-19

NOTE: 
These coil springs are not suitable for vehicles with PASM Sport (PR 030 / 031). 

Diagram ref. 12.

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Related, superseded, cross reference or alternative numbers for comparison.

99133353105504
99133353105504

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99133353115504/1
Product Information
Product Information
Standard replacement coil spring - suitable for models equipped with a Sport suspension (option code: 030), with a Sport chassis PASM and PDCC (option code: 031).

Sold individually – two springs are required per front axle.
We strongly recommend replacing coil springs in pairs. 

Fits:
Porsche 991.2 Carrera 2 / 2S 2017 - 2019
Porsche 991.2 Carrera 4 / 4S  2017 - 2019
* Cars with Sport suspension (option code: 030)
* Cars with Sport chassis with PASM and PDCC (option code: 031)

Diagram ref no 8

This coil spring supports one side of the vehicle’s suspension, managing compression and rebound during braking, acceleration, and cornering. It helps maintain correct ride height and contributes to stable, predictable handling characteristics.

Installed within the suspension assembly, the spring compresses and expands with suspension travel to absorb road impacts and control body movement. Proper spring performance is essential for maintaining tyre contact, steering accuracy, and overall ride comfort.

Over time, coil springs can weaken or sag due to constant load, mileage, and road conditions. A worn spring can alter ride height and suspension geometry, negatively affecting handling, tyre wear, and comfort. Replacing tired springs restores factory-style suspension balance and driving confidence.

When to replace:
Ride height appears uneven or sagging
 Increased body roll or reduced handling precision
 Visible corrosion, cracks, or spring fatigue
 During shock or strut replacement
 As part of a suspension refresh or alignment correction

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99133353115504
99133353115504
99133353115

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Special Order item
99133353115504
Product Information
Product Information
Standard replacement coil springs.
The springs are priced / boxed as a pair.

Identification paint coloured marking Pure White

Fits:
Porsche 991.2 Carrera 2 / 2S 2017 - 2019
Porsche 991.2 Carrera 4 / 4S  2017 - 2019
* Cars with Sport suspension (option code: 030)
* Cars with Sport chassis with PASM and PDCC (option code: 031)

Diagram ref no 8

A genuine Porsche coil spring pair, manufactured to exact OEM specifications for material quality, dimensional accuracy, and performance consistency. This set includes two springs, designed to be installed together to maintain correct suspension balance.

These springs support the vehicle’s axle load and control suspension movement during braking, acceleration, and cornering. Replacing both springs as a matched pair ensures even ride height, correct weight distribution, and predictable handling response.

Installed within the suspension assembly, the coil springs compress and rebound with suspension travel to absorb road impacts and stabilise the vehicle body. Their precisely calibrated spring rates work in harmony with Porsche dampers to maintain tyre contact, steering precision, and ride comfort.

When to replace:
Ride height has sagged or become uneven
 Springs show signs of fatigue, corrosion, or damage
 During shock or strut replacement
 Suspension refurbishment or alignment correction
 Reduced handling precision or ride comfort

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99133353115504
99133353115504
99133353115

The product you are viewing cross references to these numbers
99133353105504/1::1
Product Information
Product Information
Rear coil spring -  Suitable for Coupe, Cabriolet & Targa models equipped with standard PASM (PR 352, 475, or 477).

Sold individually; two (x2) required per vehicle. We strongly recommend replacing coil springs in pairs.

rear
Porsche 991-2 Carrera 2017-19

NOTE:
These coil springs are not suitable for vehicles with PASM Sport (PR 030 / 031). 

Diagram ref. 12.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99133353105504
99133353105504

The product you are viewing cross references to these numbers
Special Order item
99133353105504::1
Product Information
Product Information
Pair of rear coil springs with blue / yellow green markings. 

Suitable for Coupe, Cabriolet & Targa models equipped with standard PASM (PR 352, 475, or 477).

rear
Porsche 991-2 Carrera 2017-19

NOTE:
These coil springs are not suitable for vehicles with PASM Sport (PR 030 / 031). 

Diagram ref. 12.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99133353105504
99133353105504

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 products)
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About Coil Springs REAR

Porsche Rear Coil Springs | Design911 Suspension Components for Ride Balance, Grip & Comfort

Rear coil springs are an essential part of your Porsche’s suspension system, supporting the rear axle and maintaining consistent ride height, traction, and balance. They work alongside the dampers to absorb road shocks, stabilise the chassis, and ensure predictable handling under acceleration, braking, and cornering. Properly functioning coil springs are vital to preserving Porsche’s trademark blend of comfort, agility, and precision.

At Design911, we supply a complete selection of rear coil springs designed for accuracy, performance, and long-term durability. Crafted from high-tensile steel or performance-grade materials, each spring provides consistent compression, strength, and reliability. Ideal for servicing, restoration, or performance upgrades, our coil springs help maintain perfect suspension geometry and ensure smooth, responsive handling on every drive.

What Do Rear Coil Springs Do?

Rear coil springs support the weight of the rear section of the car while maintaining suspension travel, stability, and balance.

Core Functions:
• Support rear vehicle weight and maintain proper ride height.
• Absorb road irregularities for comfort and stability.
• Work with shock absorbers to control suspension movement.
• Ensure balanced traction during acceleration and cornering.
• Contribute to predictable handling and braking stability.

Strong, properly fitted coil springs are essential for preserving the balance and precision that define Porsche’s driving experience.

Why Do Rear Coil Springs Fail or Degrade?

Rear springs operate under constant load and exposure to harsh road conditions, leading to fatigue and eventual wear.

Common Causes of Failure Include:
• Metal fatigue from repeated compression cycles.
• Corrosion or rust causing fractures or surface weakening.
• Overloading or uneven weight distribution.
• Cracks or sagging due to high mileage or ageing materials.
• Broken coils from road impacts or debris.

When coil springs fail, symptoms include uneven rear ride height, poor stability under load, harsh ride quality, and unpredictable handling — all of which compromise comfort and safety.

Why Replace or Upgrade Your Porsche Rear Coil Springs?

Replacing worn or broken rear coil springs restores suspension balance, stability, and comfort. Performance-tuned or progressive-rate springs also enhance grip, reduce body roll, and improve response during dynamic driving.

Key Benefits:
• Restores correct ride height and rear suspension geometry.
• Improves balance, comfort, and handling stability.
• Reduces body roll and improves traction.
• High-strength, corrosion-resistant materials ensure longevity.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Panamera, Cayenne, and Macan models.
• Ideal for maintenance, restoration, or performance upgrades.

Design911’s Porsche rear coil springs deliver precision engineering and performance consistency — ensuring your Porsche remains stable, comfortable, and responsive mile after mile.

Highlights

• Premium Porsche rear coil springs for all models.
• High-tensile steel or performance-grade construction.
• Restores ride height, balance, and suspension performance.
• Optimised for comfort and handling precision.
• Compatible with both classic and modern Porsche vehicles.
• Perfect for servicing, restoration, or performance tuning.

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