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Anti Roll Bar Bushes

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91450125910/1KIT
Product Information
Product Information

Rear Anti-Roll Bar Installation Hardware Kit
This Rear Anti-Roll Bar Installation (Hardware) Kit for the Porsche 914 includes every essential component required to correctly mount, secure and reinforce the rear anti-roll (sway) bar system. Designed for restoration, upgrades and repairs, this kit ensures the rear suspension performs as Porsche intended—improving stability, cornering control and chassis response


Fits:

  • Porsche 914 (1970-1974)

Diagram Ref No: 28

The kit includes:
2 x 91450125910/1 – Mounting Bracket
2 x 91450153271/1 – Reinforcement Plates
2 x 90133379303/1 – Bushings
2 x 90133375301/1 Brackets
4 x 90134378200/1 – Bushings
4 x 90007508704 – Bolts
4 x 90002701501 – Washers

Each component is manufactured to precision tolerances and performance-fit standards—ideal for replacing aged hardware, upgrading worn pieces or installing a rear anti-roll bar on models that did not originally have one fitted.

What the Rear Anti-Roll Bar Hardware Kit Does

The anti-roll bar system works to stabilise the rear of the Porsche 914 by reducing body roll during cornering. This kit ensures the correct mounting and reinforcement of the bar, allowing it to function effectively.

Key Functions

  • Provides secure mounting points for the sway bar
  • Reinforces the rear suspension console area
  • Maintains proper bar geometry and alignment
  • Reduces rear-end body roll under lateral load
  • Improves cornering balance, stability and driver confidence
  • Ensures correct bushing and bracket fitment for long-term reliability

A properly mounted rear anti-roll bar transforms the handling of a Porsche 914—especially when combined with refreshed suspension components.

The Porsche 914’s rear suspension is known for stress on mounting hardware, especially on cars used for performance driving, autocross or spirited road use. Decades of use take a toll on original parts.

Common Failure Causes

  • Aged bushings that crack, harden or collapse
  • Corrosion on brackets, bolts and washers
  • Metal fatigue from continuous lateral forces
  • Previous incorrect installations leading to weakened mounting points
  • Reinforcement plates separating due to age or rust
  • Chassis flex stressing original mounting areas

Once hardware wears or fails, the sway bar becomes ineffective—or worse, may detach entirely.

Why This Kit Should Be Replaced or Installed

Installing a fresh anti-roll bar hardware kit restores the Porsche 914’s rear-end stability and prevents further suspension damage.

Benefits of Installing This New Kit

  • Ensures correct mounting and geometry of the sway bar
  • Improves handling, cornering and overall stability
  • Eliminates creaking, clunking or loose-suspension symptoms
  • Reinforces structural areas prone to fatigue
  • Provides a fresh set of all required brackets, bolts and bushings
  • Ideal for restoration or upgrading non-equipped cars



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

91450125910
91450125910
91450153271
90133379303
90133375301
90134378200
90007508704
90002701503

The product you are viewing cross references to these numbers
PFR57-412-16BLK
Product Information
Product Information
Powerflex Black Series Stabilizer Bar Bush Rear.
Sold as a pack of 4 bushes

Replacement for Porsche parts No. 90133379304.

powerflexblk

Rear stabilizer bar bush - 16mm.
Rear drop link bush - 16mm.
Fits - left and right side.

Fits:
Porsche 911 1965-68 L / T / TU Rear 4 required per car
(Stabiliser bar and Drop link)

Porsche 914 1970-76 Rear 2 required per car
(Stabiliser bar)

Diagram Ref No 2.
Click 'Zoom in' for large parts diagram.


Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsitive steering
- Longer service life of suspension components

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

PFR57-412-16BLK
90133379304
90133379301
PFR57-412-16BLK

The product you are viewing cross references to these numbers
PFR57-412-16::3
Product Information
Product Information
Powerflex Anti Roll Bar Bush Rear.
Replacement for Porsche parts No. 90133379304.

SET OF 4

powerflex

Rear stabilizer bar bush - 16mm.
Rear drop link bush - 16mm.
Fits - left and right side.

Fits:
Porsche 911 1965-68 L / T / TU Rear 4 required per car
(Stabiliser bar and Drop link)

Porsche 914 1970-76 Rear 2 required per car
(Stabiliser bar)

Diagram Ref No 2.
Click 'Zoom in' for large parts diagram.

NOTE: Please check anti roll bar diameter before ordering.


Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsitive steering
- Longer service life of suspension components

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

PFR57-412-16
90133379304
90133379301
PFR57-412-16

The product you are viewing cross references to these numbers
PFR57-412-16H
Product Information
Product Information
Powerflex Heritage Anti Roll Bar Bush Rear.
Replacement for Porsche parts No. 90133379304.

SET OF 4

powerflexh

Rear stabilizer bar bush - 16mm.
Rear drop link bush - 16mm.
Fits - left and right side.

Fits:
Porsche 911 1965-68 L / T / TU Rear 4 required per car
(Stabiliser bar and Drop link)

Porsche 914 1970-76 Rear 2 required per car
(Stabiliser bar)

Diagram Ref No 2.
Click 'Zoom in' for large parts diagram.


Powerflex Heritage Collection. For Modern Day Classics.

A range of bushes engineered for the road to compliment your classic car.

POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.

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

PFR57-412-16H
90133379304
90133379301
PFR57-412-16H
PFR57-412-16

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 17 products)
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About Anti Roll Bar Bushes

Porsche Anti-Roll Bar Bushes | Design911 Suspension Components for Precision, Grip & Stability

Anti-roll bar bushes (also known as stabiliser bar bushes) are small but critical components within your Porsche’s suspension system. They secure the anti-roll bar to the chassis, allowing controlled movement that reduces body roll during cornering and improves handling stability. Properly functioning bushes help maintain suspension geometry, steering precision, and ride comfort — key attributes that define Porsche’s dynamic driving performance.

At Design911, we offer a full range of anti-roll bar bushes, crafted from advanced rubber, polyurethane, and performance-grade materials. Each bushing is engineered for exact fitment, durability, and vibration isolation. Perfect for routine servicing, performance upgrades, or complete restorations, our range helps restore suspension balance and ensures consistent road holding and control.

What Do Anti-Roll Bar Bushes Do?

Anti-roll bar bushes act as cushioning mounts between the anti-roll bar and chassis, absorbing vibration and allowing controlled articulation of the bar.

Core Functions:
• Reduce body roll by supporting bar movement during cornering.
• Provide cushioning to minimise noise and vibration.
• Maintain correct anti-roll bar alignment under load.
• Help distribute cornering forces evenly for improved grip.
• Enhance suspension comfort and steering response.

In good condition, anti-roll bar bushes keep your Porsche stable, predictable, and agile — whether on road, track, or everyday driving.

Why Do Anti-Roll Bar Bushes Fail or Degrade?

Constant flexing, pressure, and exposure to environmental factors gradually wear down bush materials, affecting handling and comfort.

Common Causes of Failure Include:
• Cracking, hardening, or perishing of rubber due to age or heat.
• Oil contamination softening and weakening bush material.
• Corrosion or movement in brackets wearing the bush housing.
• Over-compression or deformation from high-performance driving.
• Excessive vibration causing accelerated wear.

When bushes fail, symptoms often include clunking noises, poor cornering balance, and reduced steering sharpness — all signs that replacement is needed to restore your Porsche’s precision.

Why Replace or Upgrade Your Porsche Anti-Roll Bar Bushes?

Replacing worn bushes restores suspension control, comfort, and steering precision. Upgrading to polyurethane or performance-grade bushes provides sharper handling and greater durability for spirited or track-focused driving.

Key Benefits:
• Restores handling stability and reduces body roll.
• Eliminates suspension noise, vibration, and harshness.
• Improves steering response and cornering feedback.
• Available in rubber and performance polyurethane options.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan models.
• Ideal for suspension servicing, restoration, or performance tuning.

Design911’s Porsche anti-roll bar bushes offer precision, performance, and reliability — ensuring your Porsche continues to handle with confidence and control.

Highlights

• Premium Porsche anti-roll bar bushes and stabiliser mounts.
• High-quality rubber or polyurethane construction.
• Designed for precise fitment and vibration absorption.
• Improves handling, stability, and suspension comfort.
• Compatible with classic and modern Porsche models.
• Perfect for maintenance, restoration, or performance upgrades.

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