Ball Joints

De-Cambered Ball Joint For A-Arm - Old Type (FI16).
Upgrade your front suspension precision with this de-cambered ball joint, designed for early Porsche 911 and 914 models (1968-72) using the FI16 suspension system. This ball joint features an offset mounting position, delivering approx 3 mm additional negative camber per side, improving front end grip and cornering response.
Sold Each.
x2 Required Per Car.

Fits:

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

Diagram Ref No 13, 15, 16, 17

What This Product Does:

• By offsetting the ball joint mounting location, the bottom of the strut / control arm is moved slightly outward, thereby increasing the negative camber angle of the front wheels (camber meaning the top of the tire tilts inward). This helps maintain better contact patch under cornering or when the car is loaded laterally. 
• Improves front end grip and handling when cornering heavily by limiting camber loss under load.
• Because it uses upgraded hardware, it ensures the A-arm to spindle connection remains precise, reducing deflection or unwanted movement compared to worn standard joints.

Symptoms & When You Might Need It:

• If you’ve lowered the front of the car, added stiffer springs or anti-roll bars, you may find the standard camber spec is insufficient — tires may roll onto the outer edge when cornering. This de-cambered joint helps adjust for that.
• Worn or loose ball joints can cause front end play, knocking noises when the steering is turned or when hitting bumps, and uneven tire wear (especially on the inner or outer shoulder). The upgrade version helps eliminate play and adjust geometry.
  
• Loss of front negative camber under lateral load: you might notice less cornering grip, front tires scrub or overheat on the outer edge, or the car understeers more than normal.
• Visible wear: when inspecting, you might find the original ball joint housing is worn, the stud loosened, rubber boots torn, or excessive play when lifting the wheel and wiggling the control arm.

Why This Upgrade Matters:

• For enthusiasts, track-day users or cars modified with lowered suspension and stiffer springs, the factory ball joint may no longer allow optimal camber and geometry settings. This de-cambered version gives a relatively easy bolt-in method to move the geometry in the right direction without major suspension redesign.
• It offers both improved handling (by more negative camber) and also improved front end stability and precision (by replacing worn or standard joints with a stronger, correctly designed part).
• Considering the age of 911/914 front suspension components, renewing joints such as this one is a worthwhile investment in safety, longevity and driving feel.

Related reference numbers
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90134104904

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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

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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 1968-72 

Diagram ref no 13, 15, 16 and 17

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

90134104904

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
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91134104905

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Rennline Decambered Ball Joint Set.
Priced Per Pair.

Fits:
Porsche 911/912/914 1968-71

Rennline Decambered Ball Joints are a track ready solutions for 911/912/914 owners looking to perfect their suspension setup. These Decambered Ball Joints rectify the problem of limited camber adjustment on the top of the strut by moving the bottom of the strut further from the body. With the same upper strut mount location these ball joints alone can gain up to -.75° of camber and gain .5" of track width improving the stance and stability of the front end all at once. Combine these with Rennline adjustable camber plates and monoball mounts for maximum adjustability on the track and the street. These are a perfect compliment for any street or track suspension, and are a must have for those looking to precisely dial in the ultimate alignment setup. Kit includes backing plate/ring, bottom locking plate and cotter pin to secure locking plate. Everything you need for a factory correct install.

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S0300XEARLY

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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.

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90134142600

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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
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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.

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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
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91134104905

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Wishbone ball joint, Front.



Fits: Left or Right
Porsche 911 08/69-07/71
Porsche 914 1970-72

Price is for each.

Replace your tired ball joints to restore the original steering, worn ball joints degrade steering precision. Ball joints connect the front strut to the control arms and a failure causes loss of control. To avoid potential safety issues, street cars should replace at 100k miles, track cars more often.

Related reference numbers
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1-90134104900

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Wishbone ball joint, Front. Porsche 911 08/69-07/71, 914 1970-72
Price is for each.

Fits:
Fits: Left or Right
Porsche 911 08/1969-07/1971
Porsche 914 1970-1972

Diagram ref no 13, 15, 16 and 17

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

90134104904

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