Engine Mounts

Performance engine mounts (PAIR). Included two M12 x 1.75 Nuts



Separate inserts available for varying densities
Shore ratings 65A Street (available separately)
Shore ratings 75A Fast Road (included in engine mounts)
Shore ratings 85A Track (available separately)

Fits:
Porsche 964 C2 / C4 / RS / Turbo
Porsche 993 C2 / C4 / RS / Turbo
Porsche 996 C2, C4, C4S, Turbo, GT2, GT3
Porsche 997 C2, C2s, C4, C4s, Turbo, GT2, GT3

Please note: the threads needs to be treated with loctite before installation (not sold with the product).

Replacing your factory engine mounts with these performance semi-solid mounts will dramatically decrease engine movement which then will result in better acceleration and handling of your Porsche.

CNC machined mounts with PU bushes are absolute must have for any car on track or on the street. Very easy to replace by experienced DIYers.

For 911 & Porsche world article / fitment guide pdf please CLICK HERE

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3609309625

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Tuneable Semi-Solid Engine Mount.
SET OF 2 Includes three pairs of inserts in varying densities

 

Fits:
Porsche 964/993/996/997

The Rennline Tune-able Engine Mount for the 964, 993, 996, and 997 offers the ultimate in adjust ability for your car. Replacing your compliant factory mounts will decrease engine movement resulting in better acceleration, handling and significantly increased shifter feel. This is the ultimate solution for almost any car, and allows you to tune our mounts for the way you drive. Our mounts are CNC machined from billet aluminium and include three pairs of inserts in varying densities. Tune your mounts by using the softer inserts to reduce engine slop and avoid missed shifts in your street car, or utilise the stiffest inserts to get the most from a more focused track car. You can even mix and match, giving you 9 possible combinations to let you dial in our mount to your specifications. Here at Rennline we know you want your Porsche to be flawless, and that is why we are Driven to Improve Excellence.

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M18

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Rennline Solid Motor / Engine Mounts Pair. ALUMINIUM.
SET OF 2



Fits:
Porsche 964
Porsche 993
Porsche 996
Porsche 997

Solid engine mounts are a smart upgrade to any track or aggressive street car, and were installed on Porsche factory race cars. Stock mounts are made of compliant rubber, and contribute to imprecise shifting and inferior throttle response. Solid mounts create slightly more interior vibration than rubber mounts, but securely connect the engine and transmission assembly to the car's unibody, creating a crisper throttle response and shifter feel. Rennline's solid mounts are CNC machined from 6061 aluminum for strength and light weight, and come as a pair with new Grade 8 mounting hardware. Sold as a set of (2)

Motorsport Product

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M08

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Engine mount bolt. M 12 x1.5 x 105

Fits:
Porsche 964 Carrera RS 1989-94
Porsche 993 Carrera RS 1995-98

Diagram Ref No 7C

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90008214402

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Engine Mount Cross Member

Fits:
Porsche 964 1989-94 (not Turbo)

Click 'Zoom in' for large parts diagram.
Diagram Ref No 1.

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96411502190

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Engine mount cup washer.
Sold each

Fits:
Porsche 911 1965-89
Porsche 911 (930) Turbo 1975-89
Porsche 964 CARRERA RS
Porsche 993 CARRERA RS

Diagram Ref No 10

Engine mount cup washer.
Fits above and below the engine/transmission mounts.



Fits:
Porsche 911 1965-89
Porsche 911 (930) Turbo 1975-89
Porsche 964 CARRERA RS
Porsche 993 CARRERA RS

Click 'Zoom in' for large parts diagram.
Diagram Ref No 10

Price shown is for each.

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90130531100PRM

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Engine mount fitting kit.  Fitting are for two engine mounts 

Fits:
Porsche 964 C2 / C4 1990-94 (use with RS style mounts)
Porsche 993 Carrera RS 1995-98
Porsche 964 C2 / C4 1990-94 (use with RS style mounts)
Porsche 993 Carrera RS 1995-98

Diagram Ref No 13, 14, 15 and 16.

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964993MOUNTKIT

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Engine mount. Price is each should be purchased as a pair.
These have a rubber Shore rating of 65 and are for standard road use

Fits:
Porsche 964 1989 to 1994
Porsche 993 1994 to 1998

Replace your worn, original engine mounts with these RS style, rubber bushed items.

2 Required per car

Diagram ref no 7A

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Upgraded engine mount. Price is each should be purchased as a pair.
These have a HD rubber Shore rating of 75 and are for performance road and track use.



Fits:
Porsche 964 1989 to 1994
Porsche 993 1994 to 1998

Replace your worn, original engine mounts with these upgraded RS style, rubber bushed items.

2 Required per car

Click 'Zoom in' for large parts diagram.
Diagram ref no 7A

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Uniball upgraded engine mount. Price is each should be purchased as a pair.

Fits:
Porsche 964 1989 to 1994
Porsche 993 1994 to 1998

Replace your worn, original engine mounts with these upgraded uniball items.
This performance upgrade reduces engine movement to enhance and improve performance.
Designed for track use.

2 Required per car

Diagram ref no 7A

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Engine Mount HD RS Style Uni-Ball Centre.

Experience uncompromising drivetrain control with the HD RS-Style Engine Mount featuring a Uni-Ball Centre — the ultimate upgrade for high-performance Porsche 964 and 993 models.
Engineered for motorsport precision, this mount combines the robust RS-style housing with a spherical uni-ball bearing core, replacing the standard rubber insert. The result is near-zero flex or deflection under engine torque, ensuring sharper throttle response, improved gearshift accuracy, and stable engine alignment even under extreme load.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche 964 (911) C2 1989-93 
• Porsche 964 (911) C4 1989-93
  
• Porsche 964 (911) RS 3.6L 1991-93 
• Porsche 964 (911) RS 3.8L 1991-93
  
• 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
  
  

Diagram Ref No 7A

What This Product Does:

• In a uniball (spherical bearing) design, the elastic rubber center is replaced (or augmented) with a metal bearing that allows rotation and articulation but eliminates flex / deflection.
  
• This gives a much more direct mechanical interface—engine motion under load is significantly reduced compared to rubber alone.
• Because the spherical joint has very low compliance, the mount becomes much more rigid in the direction of torque / twist (longitudinal / rotational direction) while still permitting the required articulation in other axes.
• This variant is often preferred for track, clubsport, or dedicated performance cars where precision and rigidity matter more than comfort.
  
  

Symptoms Of Worn Or Failing Engine Mounts:

• Excessive Engine Movement - When accelerating, decelerating, or cornering, you may notice the engine rocking or shifting more than normal.
  
• Clunking or Knocking Noises - A distinct thud, clunk, or metal-on-metal noise when shifting gears or during abrupt acceleration/deceleration indicates the mounts are no longer isolating movement properly.
  
• Vibration in the Cabin or Steering Wheel - As the mount deteriorates, it loses its ability to absorb vibration from the engine.
  
• Poor Gearshift Precision - Engine movement causes slight misalignment in the drivetrain, which can result in imprecise or “notchy” gear changes.
  
• Unstable Handling or Driveline Feel - Excessive engine movement shifts the vehicle’s center of gravity and can create a “loose” or unsettled feeling during hard cornering or braking.
  
• Visible Wear or Fluid Leaks - The original Porsche mounts are hydraulic on many 964/993 models; when they leak fluid or collapse, engine support is compromised.
  
• Rattling or Exhaust Misalignment - Worn mounts allow the engine to sit lower or twist, which can cause contact between the exhaust system and underbody components, leading to rattling or vibration noises.
  
  

Why This Upgrade Version Matters:

• Maximum Rigidity / Minimal Deflection — virtually no unwanted movement, giving optimal drivetrain alignment and responsiveness.
  
• Sharper Response & Consistency — throttle, shifts, and engine behavior are more direct because the engine is “locked down.”
  
• Better Repeatability — especially in motorsport, lap after lap the behavior remains consistent.
  
• High Load Handling — in high torque / high cornering environments, the mount retains its shape under stress.
  
• Precision Feel — the driver senses a closer mechanical connection, improving control feedback.

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Engine Mount HD RS Style, 65A Shore Rating.
Upgrade your Porsche’s performance and stability with this RS-style Heavy-Duty Engine Mount. Designed as a direct replacement for standard mounts, it features a 65A Shore-rated rubber compound that delivers the perfect balance between comfort and precision.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93
• 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

Diagram Ref No 7A

What This Product Does:

• This is a high-density (HD) rubber engine mount in the RS / sport style, intended as an upgraded or stronger replacement to the standard mounts offered on Porsche 964 / 993 models.
• The “65A Shore rating” refers to the hardness (stiffness) of the rubber material. A Shore A of 65 gives a balance: firmer than the softest mounts, but not excessively rigid, aiming to deliver improved engine control without too much harshness.
• It is often used as a pair (one on each side of the engine) to replace worn or softer factory mounts.
• The RS style mount replaces or upgrades from the factory hydraulic or softer mounts.
• In practice, what it does: it helps secure the engine more rigidly to the chassis, reducing unwanted engine movement (twist, yaw, vibration) under load (acceleration, cornering, braking). It helps maintain drivetrain geometry, gives crisper throttle response, and improves shift feel.
  
  

Symptoms / Signs Of A Failing Or Worn Engine Mount:

• Excessive Engine Movement / “Engine Rocking” - The engine may shift or rock under throttle or when revving, particularly during hard acceleration, deceleration, or rapid load change.
  
• Clunks or Thuds / Transmission “Bump” During Engagement - When shifting gears, especially from neutral into drive or reverse, or when applying throttle from idle, the drivetrain may “bump” or thud due to slack from the worn mount.
  
• Misalignment / Drivetrain Strain - Because mounts help maintain alignment between engine, gearbox, and driveshafts, a failing mount can cause misalignment, leading to extra stress on coupling joints, CVs, or mount brackets.
  
• Increased Vibration or Harshness - You may feel more vibration through the cabin, floor, or pedals, especially under load.
  
• Noise - Metallic rattles or clunks if the engine is loose enough to hit against brackets or the chassis.
  
• Rubber Deterioration / Visible Damage - Cracks, splits, or separation in the rubber portion of the mount.
  
  

Why This Upgrade Matters:

• Upgrading to the RS-Style Engine Mounts (65A Shore Rating) transforms how your Porsche feels on the road. Standard factory mounts are designed for comfort, but over time they soften and allow excessive engine movement, which dulls throttle response and gear changes. The RS-spec design uses a firmer 65A rubber compound, originally developed for Porsche’s Rennsport (RS) models, to deliver sharper, more connected driving dynamics without adding harshness.
  
• With these mounts installed, your engine and gearbox stay properly aligned, improving stability under acceleration, cornering, and braking. You’ll experience crisper shifting, reduced vibration, and improved handling precision, especially during spirited or track driving.

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