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911 (992)
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Installation and Conversion Instructions

09/23

1

20
– Front spoiler reinforcement plate

6.1

Remove front spoiler.  Workshop Manual '66031925 Removing and installing front spoiler
(centre)'

6.2

Installing new front spoiler  19 -1-.  Workshop Manual '66031925 Removing and
installing front spoiler (centre)'

6.3

Remove screws  21 -1- (no longer needed).
1

– Screws

21
6.4

Install reinforcement plates  22 -3- on front
spoiler  22 -1- and secure with new screws
from the fastening parts set. Tightening
torque 3.2 Nm
1
2

– Front spoiler
– Reinforcement plates

22

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Installation and Conversion Instructions
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911 (992)
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Mounting the air control elements on the underbody
1
– Left air-guide element - 992.044.856.05
2
– Right air-guide element - 992.044.856.06
Mounting parts set: – Screw - 999.073.297.A2
with hexagon nut - 999.076.071.02
7.1

Mount the respective air-guide element  24
-1- on the underbody cover  24 -4- with
underbody cover  24 -2- screws.

7.2

Transfer center air-guide element bore  24
-3- to underbody cover  24 -4-.

7.3

Remove air-guide element  24 -1-.

7.4

Remove underbody cover  24 -4-. 
Workshop Manual '519219 Remove and
install front cover'
1
2
3
4

7.5

–
–
–
–

23

Air-guide element
Screw
Center bore on air-guide element
Underbody cover

Drill a ∅ 6.5 mm hole at the center bore
marking on the air-guide element.
24

7.6

Mount air-guide element  25 -1- on the
underside of the underbody cover  25 -3using a new screw and nut  25 -2- from the
fastening parts set.
Tightening torque 10 Nm
1
2
3

7.7

– Air-guide element
– Screw - 999.073.297.A2 with
hexagon nut - 999.076.071.02
– Underbody cover (removed)

Install underbody cover.  Workshop Manual
'519219 Remove and install front cover'

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8

Installation and Conversion Instructions

09/23

Installing rear diffusor
1
8.1

– Rear diffusor - 992.044.856.04
Remove rear diffusor  27 -1-.  Workshop
Manual '66591925 Removing and installing
rear spoiler, lower part (diffuser)'

26
8.2

Install new rear diffusor  27 -1-. 
Workshop Manual '66591925 Removing and
installing rear spoiler, lower part (diffuser)'
1

9

– Rear diffusor

Affixing stickers
Information
The stickers are to be ordered in the color of the
customer’s choice (black or white).
27

9.1

Carefully remove GT3 logo and adhesive
residue.

9.2

Thoroughly clean the surfaces to be adhered, with isopropanol (alcohol). The adhesive
surfaces must be free from dust, dirt and grease of any kind.
Information
The stickers can also be affixed wet. After removing the backing film, spray a little water or a
mixture of water and washing-up liquid onto the sticker and the surface to be affixed.

9.3
Remove backing sheet from the respective sticker, align the protective film on the sticker
flush at the front and bottom of the door and stick it on, then remove the protective film on
the sticker.

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911 (992)
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Installation and Conversion Instructions

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10 Concluding work
10.1

Read out the fault memory of all systems, work through any existing faults and erase the fault
memory.  Workshop Manual '033500 Fault memory for on-board diagnosis'

10.2

Disconnect the battery charger.  Workshop Manual '2X00IN Battery trickle charge'

11 Perform suspension alignment.
11.1

Measure vehicle with standard values (as-delivered state). To do this, see the repair
instructions  Workshop Manual '2X00IN Adjustment values for suspension alignment'.

11.2

Measure vehicle with the performance setup recommended by Manthey (race circuit
driving). Adjustment via the Manthey measuring wheel system in Conversion Instructions for
 Installation and Conversion Instructions '440000 measuring wheel system'

11.3

Measuring criteria:
•
•

Tank capacity: Full
Driver ballast: Driver weight
Damper clicking Performance

Front axle

Rear axle

Rebound stage (R) LowSpeed (Black)

7

7

Rebound stage (R) HighSpeed (gold)

8

6

Pressure stage (C) LowSpeed (Black)

7

7

Pressure level (C) HighSpeed (Gold)

9

9

Center position =
medium

Center position =
medium

Steel anti-roll bar

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911 (992)

Installation and Conversion Instructions

09/23

Ride height on tyres

0913

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104.0 mm

247.0 mm

90 mm (offset:
-14 mm)

240 mm (offset:
-7 mm)

Front axle

Rear axle

Rebound stage (R) LowSpeed (Black)

9

10

Rebound stage (R) HighSpeed (gold)

9

12

Pressure stage (C) LowSpeed (Black)

10

10

Pressure level (C) HighSpeed (Gold)

10

11

Center position =
medium

Center position =
medium

104.0 mm

247.0 mm

90 mm (offset:
-14 mm)

240 mm (offset:
-7 mm)

Driving height on measuring wheel system

Damper clicking Comfort

Steel anti-roll bar
Ride height on tyres
Driving height on measuring wheel system

11.4

ENU

Measurement log:
Measurement log (executing PORSCHE Center)
Wheel alignment values
(worldwide)

Initial readings

Setpoint values

Final
measurement

Front axle
Toe
unpressed (total)

- 2 mm

Camber
with wheels in straight-ahead
position

- 2.6°
Rear axle

Toe
per wheel

+ 2 mm

Camber

- 2.6°

Installed on:

Mechanic:

Acceptance:

Stamp:

(Date)

(First Name)

(Name of
Foreman)

(Porsche Center)

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911 (992)
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Installation and Conversion Instructions

09/23

12 Installing towing loops

Information
The towing loops are not approved for use on public roads.
Race Track only.
1
2
3
4
5
12.1

–
–
–
–
–

Front towing loop
Rear towing loop
Small spacer
Medium spacer
Large spacer

Remove both towing hook covers (front and
rear).

31
12.2

Screw the respective towing loop  32 -1into the device provided in order to check the
positions of the towing loop.
1

– Rear towing loop

32

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Tequipment

Installation and Conversion Instructions
12.3

911 (992)
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Depending on position, install one or more of
the three supplied wheel spaces  31 -3, 4,
5- on the respective towing loop  33 -1and screw in again.
The logo on the respective towing lug  33
-1- must face straight up.
1

– Front towing loop

33
Labor time:

911 GT3 Touring Manthey Performance Kit
Includes:
Install 911 GT3 Manthey Performance Kit.

Labor time: 1050 TU

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.

© 2024 Porsche Cars North America, Inc.

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Aug 20, 2024
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