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Porsche > 993 (911) (1994-1998) > 993 (911) TURBO S 1994-97 > Suspension Upgrades >

Rear Sub Frame

Rear Sub Frame

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DISPLAYING 1 to 4 (of 10 products)
1 2 3
Eccentric bolt adjuster locking kit. Porsche 993 - 2180019, 99333121700, 99733121702, PAF007648, 99633121900, 99333121980, 99333121981, 99333121701, 99333121901
1
Eccentric bolt adjuster locking kit. Porsche 993
2180019
Product Information
Product Information
Eccentric adjuster locking kit.
6pcs in kit - 1 kit required per car

elephantracing

Fits
Porsche 993 - All

Prevent Alignment Settings From Slipping

Losing on the track is bad enough, but losing the alignment on the track is even worse. Prevent your eccentric adjuster bolts from slipping under heavy cornering loads with our Eccentric Adjuster Locking Kit.

Complete kit includes four lockout plates. Two plates are used to lock the rear toe adjusters and two plates to lock the camber settings.

Retain convenience and functionality of the eccentric adjuster. The original functionality of the adjuster is completely preserved. The plate can be set in any position.

Retain full range of the adjuster. These lockout plates do not limit adjustment range in any way, maximum toe and negative camber can be achieved with these plates in place.

Works with OEM fixed length arms and our adjustable length control arms as well.The unique design features a slotted hole that counters the slot provided for the adjuster. The plate can be moved up and down to reach any camber or toe setting desirable.

The Locking plates function by increasing the friction that holds the factory eccentric adjusters in place. These plates are guaranteed to prevent any adjuster slip even under aggressive driving conditions.

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Related, superseded, cross reference or alternative numbers for comparison.

2180019
2180019
99333121700
99733121702
PAF007648
99633121900
99333121980
99333121981
99333121701
99333121901

The product you are viewing cross references to these numbers
HD Rear subframe bushing (complete set). Porsche 993 (all) - 99333105100, 99333105200, 99333105280, 99333105180 - PR52012P, S52012P, S-52012P
2
HD Rear subframe bushing (complete set). Porsche 993 (all)
99333105100/1
Product Information
Product Information
HD Rear subframe bushing. Racing version
Complete set (4 pcs). 2 sets needed for one car.

Fits:
Porsche 993 1995-98 all models

Increase rear end stability and extend the life of your alignment with High Density subframe mounts. Factory units can cause rear ends to become more 'twitchy' and nervous, especially under high suspension loads, especially as they begin to fail. These bushings are not only responsible for holding the entire rear subframe to the shell, but for locating it in relation to the body and other suspension components. This means that even if they have not totally fallen apart the stock, soft mounts can often allow the entire rear suspension to shift and realign itself and as a result your entire car. Made from heavy duty high durometer rubber which features a 25% increase in stiffness over OE units, our High Density bushing kit includes the aluminum inner core and outer casement making them a plug and play solution for your 993. Enjoy a more planted rear end and stop living at the alignment shop with this full rear subframe kit.

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

99333105100
99333105100
99333105200
99333105280
99333105180

The product you are viewing cross references to these numbers
Rear subframe bushing (complete set). Porsche 993 (all) - 99333105100, 99333105200, 99333105280, 99333105180 - PR52011P, S52011P, S-52011P
2
Rear subframe bushing (complete set). Porsche 993 (all)
99333105100/2
Product Information
Product Information
HD Rear subframe bushing. Street version
Complete set (4 pcs). 2 sets needed for one car.

Fits:
Porsche 993 1995-98 all models

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

99333105100
99333105100
99333105200
99333105280
99333105180

The product you are viewing cross references to these numbers
Rear Subframe Bushing Set. Porsche 993 - 99333105100, 99333105200, 99333105280, 99333105180 - PR52011P
3
Rear Subframe Bushing Set. Porsche 993
99333105100/3
Product Information
Product Information
Rear Subframe Bushing (Complete Set).
Restore the precision and stability of your Porsche 993 with this Rear Subframe Bushing Set. These bushings mount the rear subframe to the chassis, isolating road vibrations while maintaining accurate suspension alignment and geometry.
Sold As A Set Of 4.
x2 Required Per Car.

Fits:
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97

Fits On To Diagram Ref No 2

What This Product Does:

  • Isolate Vibration & Noise - They provide a cushioning interface between the rigid subframe and the softer body shell, helping absorb road vibrations, shock, and noise.
  • Locate the Subframe Precisely - The bushings restrict movement of the subframe in certain directions, maintaining alignment and preventing unwanted shifts under load (acceleration, braking, cornering).
  • Allow Controlled Flexibility - While they restrain gross motion, they permit some small movement / compliance to avoid excessive stress on the chassis or suspension components, especially as the car moves over bumps or under torque loads.
  • Support Rear-End Stability & Handling - Because the subframe holds rear suspension geometry (arms, links, differential, etc.), worn or soft bushings allow variation in alignment under load, reducing precision and stability.

Symptoms & Signs Of Worn Or Failing Bushings:
  • Clunks, knocks, or bangs from the rear over bumps, especially during acceleration or deceleration.
  • Loose or imprecise handling / rear-end movement under cornering or sudden load change.
  • Rear stability issues such as traction irregularities or feeling the car “wander” or “step out” when pushing hard.
  • Poor alignment retention — alignment specs (camber, toe) may shift after driving or under load, requiring frequent re-adjustment.
  • Vibration or harshness through the chassis, especially at the rear, more transmitted through the body.
  • Visible deterioration like cracks, splits or deformation in the rubber, excessive flex / play when the car is raised, or separation between inner and outer portions of the bushing.

Why Replacement Matters:
  • Restores rear-end precision — new bushings ensure the subframe is held firmly and accurately, improving handling and chassis response.
  • Better alignment stability — new bushings keep suspension settings stable, reducing need for frequent alignment checks or changes.



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

99333105100
99333105100
99333105200
99333105280
99333105180

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 10 products)
1 2 3
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About Rear Sub Frame

Porsche Rear Subframe | Design911 Suspension Upgrade Components for Rigidity, Alignment & Handling Precision

The rear subframe is the structural foundation of your Porsche’s suspension and drivetrain assembly. It supports the suspension arms, differential, and other critical components while maintaining precise geometry under high load. A strong, correctly aligned subframe ensures stability, balance, and predictable handling — particularly during hard acceleration and cornering.

At Design911, we supply a comprehensive selection of rear subframes and upgrade components, engineered for precision, strength, and durability. Manufactured from high-tensile steel or lightweight alloy, these subframes provide improved rigidity and reduced flex, ensuring consistent performance in both road and motorsport environments. Whether you’re performing repairs, chassis restoration, or performance upgrades, our rear subframes deliver the structural integrity your Porsche deserves.

What Does the Rear Subframe Do?

The rear subframe acts as a mounting structure that connects the suspension and drivetrain to the vehicle body.

Core Functions:
• Supports rear suspension arms, differential, and drivetrain mounts.
• Maintains accurate suspension geometry under load.
• Distributes forces from cornering, braking, and acceleration.
• Reduces vibration and road harshness through the chassis.
• Improves rigidity and alignment stability for precise handling.

A properly aligned rear subframe keeps your Porsche balanced and composed, ensuring every component performs as designed.

Why Do Rear Subframes Fail or Degrade?

Despite their strength, rear subframes are exposed to high stresses, corrosion, and impact forces — all of which can lead to fatigue or structural weakening.

Common Causes of Failure Include:
• Corrosion or rust weakening metal integrity.
• Cracks or distortion from high-impact loads or collisions.
• Worn mounting bushes causing excessive movement or noise.
• Metal fatigue from performance or track use.
• Improper alignment or installation after suspension work.

Failure can cause instability, poor alignment, vibration, or uneven tyre wear — all of which compromise your Porsche’s safety and handling.

Why Replace or Upgrade Your Porsche Rear Subframe?

Replacing or upgrading the rear subframe restores suspension alignment and chassis rigidity. Performance subframes improve geometry retention and reduce flex, offering sharper handling and more predictable performance.

Key Benefits:
• Restores correct alignment and rear suspension stability.
• Increases chassis rigidity for improved feedback.
• Eliminates vibration and rear-end instability.
• Available in performance-engineered and corrosion-resistant finishes.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan models.
• Perfect for servicing, restorations, or performance suspension builds.

Design911’s Porsche rear subframes deliver precision, strength, and durability — ensuring your Porsche remains responsive, safe, and dynamically balanced.

Highlights

• Premium Porsche rear subframes and upgrade kits.
• Precision-engineered for structural rigidity and alignment accuracy.
• Constructed from high-tensile steel or lightweight alloy.
• Restores handling precision and reduces unwanted flex.
• Ideal for both road and motorsport applications.
• Suitable for servicing, restoration, or performance upgrades.

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