Ball Joints

De-Cambered Ball Joint For A-Arm Kit – New Type (FI16).

Enhance cornering precision and grip with the De-Cambered Ball Joint Kit, engineered for Porsche 911 and Porsche 914 models.
This “new type” FI16 ball joint includes a built-in negative camber offset of approximately 3 mm, allowing the front suspension to maintain improved tire contact during aggressive cornering.
The result is sharper turn-in, increased lateral grip, and more consistent geometry under load — all without the need for additional camber plates or major suspension modification.
Sold As A Kit.
x2 Kits Required Per Car.

Fits:

• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  
• 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) 
• Porsche 914 (1970-1976)
  
  

Diagram Ref No 17, 19, 20, 21

What This Product Does:

• Standard ball joints are neutral in camber contribution; a de-cambered joint adds a small built-in negative camber to the wheel. This helps counter camber loss under load, especially in spirited cornering or track use.
  
• The de­cambered joint helps maintain better tire contact patch under body roll, giving more consistent grip during aggressive driving.
  
• Because the offset is relatively small (e.g., 3 mm), it can be a subtle but useful tuning tool without major suspension modifications.

Typical Symptoms / Use-Case Indicators:

• Camber losses under hard cornering (e.g. inside shoulder lifting)
• You run aggressive alignment on track setups and want to preserve negative camber under load
• You want a simple way to bias the geometry slightly without major suspension changes

Why Choose A De-Cambered Joint:

• Improved Tire Contact Patch – Keeps the tire flatter to the road mid-corner.
  
• Better Cornering Balance – Reduces understeer by optimizing front grip.
  
• Maintains OEM Geometry – No structural modification needed.
  
• Durable, Race-Proven Design – Forged construction handles high loads.
  
• Enhanced Precision – Ideal for track-day cars, restorations, and spirited street driving.

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Related, superseded, cross reference or alternative numbers for comparison.

91134104905

The product you are viewing cross references to these numbers

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:

• 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)

(For Cars Fitted With RS Type Suspension)

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.
  
  

Symptoms Of Worn Or Failing Ball Joint:

• 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.
  
  

Why Replacement / Upgrading Matters:

• 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

The product you are viewing cross references to these numbers

De-cambered ball joint for A-arm. FI 16
Incl. ball joint, hub nut, lock plate, split pin.
Providing 3mm additional negative camber.
Price is Each

Fits:
Porsche 911 1972-89 

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

91134104905

The product you are viewing cross references to these numbers

De-cambered ball joint for A-arm. FI 18 (will not fit standard shock absorber)
Incl. ball joint, hub nut, lock plate, split pin.
Providing 3mm additional negative camber.
Price is Each



Fits:
Porsche 911 RS 1974-89 (cars fitted with RS type suspension)

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

90134104704

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Wishbone ball joint front - lock plate..
Fits: Left and right.

Fits:
Porsche 911 1969-89
Porsche 914 1972-76

Price is for each.

Related reference numbers
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90134142600

The product you are viewing cross references to these numbers

Wishbone Ball Joint Kit, Front - New Type (FI16)

Restore your Porsche’s legendary steering feel with the Front Wishbone Ball Joint Kit — the updated “New Type (FI16)” design used on 911 and 914 models.
The ball joint links the front lower wishbone (A-arm) to the steering knuckle, allowing controlled pivoting as the suspension moves. It maintains precise wheel geometry and ensures responsive handling.
Sold Each.
x2 Kits Required Per Car.

Fits:

• Porsche 911 1969-1969 2.0L / 912 SWB (F)
• Porsche 911 1970-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  
• 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 914 (1972-1976)
  

Diagram Ref No 13, 15, 16, 17

What This Product Does:

• As the suspension moves up and down over bumps, the ball joint allows controlled pivoting and articulation of that joint while maintaining alignment and keeping the wheel geometry stable.
  
• It must hold under load, lateral forces, and steering inputs, ensuring the wheel moves in the intended path without play or deflection.
  
  

Symptoms Of Wear Or Failure:

• Steering play / looseness — the steering may feel vague or “sloppy.”
  
• Knocking or clunk noises — a distinct knock over bumps or during suspension travel.
  
• Uneven or rapid tire wear — particularly on the front tires, due to misalignment or movement under load.
  
• Vibration or shimmy — especially during cornering or when driving over uneven surfaces.
  
• Borderline geometry shifts — alignment may change subtly when load is applied or when cornering.
  
• Reduced road feel / control — the front end may feel less precise or less responsive.
  
  

Why Replacement Matters:

• Restores Steering Precision & Control - Worn joints introduce slack and movement. Replacing them ensures crisp, direct response from your steering.
  
• Maintains Alignment Under Load - A healthy ball joint holds the wheel geometry consistent even when cornering or under load.
  
• Prevents Further Suspension Damage - Allowing play in a ball joint transfers forces to other components — control arms, bushings, knuckles, etc. Replacing it protects the rest of the suspension.
  
• Eliminates Noise & Harshness - New joints operate cleanly with no unwanted knocking or vibration.
  
• Safety & Reliability - Because the ball joint is a critical steering link, a failed joint can degrade or compromise safe vehicle control. Having robust, correctly functioning joints is essential.

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

91134104905

The product you are viewing cross references to these numbers

Wishbone ball joint, Front - groove nut.
Fits: left and right.

Fits:
Porsche 911 1969-89
Porsche 914 1972-76

Price is for each.

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

90134142501

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Control arm ball joint kit – new type (FI16). Stock replacement. It restores precise steering, stability, and safe handling. 
Sold as a kit -  Incl.: ball joint, hub nut, lock plate, split pin - 2 kits required per car.   

Fits:
Porsche 911 08/1972-1989
Porsche 914 08/1971-02/1976

Diagram ref no 13, 15, 16 and 17

Mounting Location & Function:
•  This ball joint connects the lower wishbone (control arm) to the steering knuckle at the front suspension of the car.
•   It allows controlled pivoting and movement as the wheel travels over bumps and during steering, while maintaining a stable, precise alignment under loads.

Manufactured in Europe to OE specifications, this kit restores safe and precise steering by linking the control arm to the steering knuckle, allowing controlled tire movement. Over time, ball joints wear out or become damaged, leading to steering play, uneven tire wear, or knocking noises. Replacing them with OE Match parts ensures durability, reliability, and proper suspension performance.

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

91134104905

The product you are viewing cross references to these numbers