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De-Cambered Ball Joint For A-Arm Set - (FI 18). Porsche 911 RS 1974-89 - 90134104704
90134104704/5
Vehicle Group
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Information
De-Cambered Ball Joint For A-Arm Set - (FI 18).
Upgrade your front suspension geometry with the De-Cambered Ball Joint Set (FI-18). These offset ball joints are engineered to provide an inbuilt additional 3mm negative camber bias, improving front-end grip and cornering response without the need for major suspension modifications.
Sold As A Set.
x2 Sets Required Per Car.
Fits:
What This Product Does:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134104704
The product you are viewing cross references to these numbers
Upgrade your front suspension geometry with the De-Cambered Ball Joint Set (FI-18). These offset ball joints are engineered to provide an inbuilt additional 3mm negative camber bias, improving front-end grip and cornering response without the need for major suspension modifications.
Sold As A Set.
x2 Sets Required Per Car.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
What This Product Does:
- Increases Negative Camber “by Default” - Because the stud is offset outward, the wheel gets a small amount of negative camber without requiring changes at the top strut mount. This helps maintain better contact patch under cornering forces.
- Counters Camber Loss Under Load - In cornering, body roll or suspension compression tends to reduce negative camber (i.e. flatten the tire). The de-cambered joint helps offset that loss so the inside tire stays more planted.
- Improves Handling Stability and Turn-In - With more negative camber under load, the front end grips better, reducing understeer and making turn-in sharper.
- Mild Track / Performance Tuning Without Major Mods - Rather than needing to retrofit adjustable camber plates or change strut towers, this joint gives a modest camber “boost” in a bolt-on manner.
- Retains Full Ball Joint Functionality - It still allows articulation (steering, suspension travel) like a normal ball joint — the offset is only in its alignment, not in its motion.
- Knocking or Clunking Noises - A dull knock from the front suspension, particularly over bumps or while turning, often indicates play in the ball joint.
- Uneven or Excessive Tire Wear - Worn joints allow uncontrolled camber and toe changes, wearing the inside or outside edges of the front tires.
- Loose or Wandering Steering - When the ball joint develops play, the steering feels vague or “floaty” — the car no longer holds a consistent line through corners.
- Vibration or Shimmy at Speed - Free play in the joint can cause steering wheel vibration, particularly over rough surfaces.
- Visible Wear or Damage - Torn dust boots, leaking grease, or excessive movement when inspected during service are clear signs the joints need replacing.
- Inconsistent Handling Under Load - The car may feel unstable mid-corner or react unpredictably to bumps due to geometry shifts caused by worn ball joints.
- Restores Safety & Structural Integrity - The ball joint supports the front suspension load. A failure can cause complete loss of steering control.
- Maintains Proper Wheel Alignment - Fresh joints eliminate unwanted camber/toe drift and keep tires correctly aligned under all loads.
- Improves Steering Precision - Tight, new ball joints restore that crisp Porsche steering feel and predictable handling
- Enhances Cornering Grip - The de-cambered design adds built-in negative camber, improving tire contact and front-end grip through corners.
- Prevents Secondary Wear - Worn joints increase stress on tires, control arms, and suspension bushings — leading to expensive downstream repairs.
- Perfect for Performance & Track Use - The offset camber geometry helps maintain optimal contact patches during high lateral loads, reducing understeer and improving lap-to-lap consistency.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134104704
90134104704
91134104905
The product you are viewing cross references to these numbers
€199.01
Now €179.11
In stock