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Rear Anti-Roll Bar, 18MM. Porsche 911 1978-86 ❭ 91133370107
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
This Rear Anti-Roll Bar, 18MM is a OE MATCH spec Porsche 911 suspension component designed to improve vehicle stability and handling by reducing body roll during cornering. Engineered for classic Porsche 911 models, this anti-roll bar (sway bar) is precisely manufactured to maintain optimal balance and driving performance.
Fits:
- Porsche 911 1978-1983 SC
- Porsche 911 1985 3.2L
Diagram Ref No 10
What This Product Does:
- Reduces body roll during cornering
- Improves vehicle stability and control
- Enhances handling and road grip
- Balances suspension movement between left and right wheels
- Maintains predictable driving dynamics, especially in spirited driving
Symptoms Of Wear Or Failure:
- Excessive body roll when cornering
- Loose or unstable handling feel
- Clunking or knocking noises from the rear suspension
- Uneven tyre wear due to poor stability
- Reduced cornering confidence and performance
Why Replacement Matters:
- Restores vehicle stability and cornering performance
- Improves driver confidence and control
- Prevents additional wear on suspension components and tyres
- Eliminates unwanted noise and looseness
- Maintains original suspension geometry and performance characteristics
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91133370107
The product you are viewing cross references to these numbers
Anti-Roll Bars (ARB’s) play an important role in a vehicle’s suspension system, helping to reduce body roll by transferring cornering load from one side of a vehicle to the other.
Often mounted to the vehicle’s chassis with rubber bushes, these bushes ensure the bar works as intended. To prevent the anti-roll bar from moving laterally within its mounts when turning, OE manufacturers will either bond the bushes to the bar, add dead-stops to the bar itself, or rely solely on the clamping pressure of the rubber.
But what happens when those bushes wear and need to be replaced? Often anti-roll bars with bonded bushes come as a costly complete assembly, so the alternative is to fit a more cost-effective unbonded polyurethane replacement, like the many we offer.
In most cases, friction from the bush will prevent any side-to-side bar movement. Still, when turning aggressively or cornering at higher speeds, a laterally shifting anti-roll bar decreases the efficiency and effectiveness of the bar, changing the dynamics of your suspension system in unpredictable ways. It also poses the risk of the bar fouling on other areas of the vehicle or suspension system.
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