## Introduction Thank you very much for purchasing this product. This manual describes the installation, handling, and precautions to be taken for this product. Please read "Precautions for Handling" carefully before using this product and use it properly. Please keep this manual in the glove box, etc., and read it whenever you have any questions. The following symbols are displayed for important points, which must be observed. | Note | | | :----------- | :------------------------------------------------------------------------------------------------- | | ⚠️ Warning | Safety precautions that must be observed (Improper handling may result in death or serious injury) | | ⚠️ Attention | For your safety and that of your vehicle (mishandling may result in injury or accident) | | ※ Advice | What you need to know. Things you should know. |

⚠️ Warning

- Never attempt to process or modify this product. - Doing so may damage the product and result in serious injury. - For safety reasons, be sure to **always stop the engine** when performing any work. - Tighten bolts and nuts securely. - Check the bolts and nuts after 100 km of driving and periodically after installation, and retighten them if necessary. - If any abnormality (abnormal noise, vibration, etc.) occurs during driving, immediately stop the car in a safe place, inspect the mounting bolts, etc., and retighten them. If the problem persists, inspect and repair the product immediately. - Continued operation may result in damage to the vehicle or an accident. - If this product deteriorates or is damaged, or is subjected to a strong impact due to an accident, it will not be able to maintain its original performance.

⚠️ Attention

- Never attempt to process or modify this product. - Doing so may damage the product and result in serious injury. - For safety reasons, be sure to stop the engine when performing any work. - Tighten bolts and nuts securely. - Check the bolts and nuts after 100 km of driving and periodically after installation, and retighten them if necessary. - If any abnormality (abnormal noise, vibration, etc.) occurs during driving, immediately stop the car in a safe place, inspect the mounting bolts, etc., and retighten them. If the problem persists, inspect and repair the product immediately. - Continued operation may result in damage to the vehicle or an accident. - If this product deteriorates or is damaged, or is subjected to a strong impact due to an accident, it will not be able to maintain its original performance.

※ Advice

- We are not responsible for any direct or indirect damages caused by malfunctions or other defects resulting from incorrect installation or handling of this product. - Please note that we are not responsible for any direct or indirect damage caused by malfunctions or other defects resulting from improper installation or handling of this product. - The vehicle warranty of SUBARU Corporation may not apply to any defects that may occur due to the installation of this product. - Please note that the product may not be covered by SUBARU's vehicle warranty against defects that may occur as a result of the installation of the product. - The specifications of this product are subject to change without notice. - The data described in this document may vary depending on the measurement conditions. - Installation of this product may cause deterioration of ride quality or significant changes in driving characteristics.

## Mounting Instructions ### 1. Part number and applicable car models | STI Part Number | Part Name | Applicable car models | | :-------------: | :----------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `ST96050ZM000` | DRY CARBON REAR SPOILER (ドライカーボンリヤスポイラー) | Applied model code: A Jul. 2021-May 2022 `ZD8A`
Applied model code: B May 2022-Sept. 2023 `ZD8B`
Applied model code: C From Sept. 2023- `ZD8C`
Applied model code: D From Jul. 2024- `ZD8D` | ### 2. Parts manifest | Num Part (Count) | | | | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | ① Spoiler (1 pcs.)
Spoiler

| ② Reinforcement bracket (2 pcs. left/right)
Brackets

| ③ Bolt (6 pcs.)
Bolt

| | ④ Washer (6 pcs.)
Washer

| ⑤ Nut (4 pcs.)
Nut

| ⑥ Grommets Sheet (2 pcs.)
Grommet

| | ⑦ Drilling gauge (1 pcs. left/right)

| ⑧ Template stencil (1 pcs.)

| ⑨ Installation and Operating Manual (this manual)
Instructions

⚠️ Warning

- For safety reasons, always disconnect the minus terminal of the battery while the engine is stopped. - Tighten bolts and nuts securely.

⚠️ Attention

- The descriptions in this manual are intended for automobile mechanics or persons with basic knowledge of maintenance. - Please do not attempt to install this product by inexperienced persons only, as it may cause injury or vehicle trouble while driving, and is dangerous. - For proper installation and proper functioning of the product, it is recommended that the product be installed at a Subaru authorized factory. - Please be sure to follow the instructions in this manual in accordance with the service manual for the vehicle model concerned issued by SUBARU Corporation. - Tighten the bolts to the specified torque. Tightening the bolts/nuts outside the specified torque may cause damage or loosening of the bolts/nuts.

### 5. Simultaneous replacement, non-reusable parts None ### 6. Work Procedure Getting Started: - This work should be performed by two or more persons. - Before installation, wipe off any dirt or oil film on the trunk lid with a rag moistened with a degreaser (recommended nonane). - When installing a new trunk lid, it is necessary to drill holes in the panel. - This manual describes the left side of the trunk lid. - Perform the work on the right side as well. - Use a hole saw without a shavings removal function. If the hole saw has a shavings release function, use it in such a way that the shavings release function does not work. - If the shavings release function is present, cutting shavings may enter the trunk lid, causing abnormal noise and rusting. - Use a hole saw with a tip drill length of 10 mm or less. (Fig. 1)

#### 1. Marking and punching on trunk inner panel

(1.1) Remove the trim panel trunk rear.
(1.1.1) Open the trunk lid, remove the 7 clips securing the trim panel trunk rear, and then remove the trim. (Fig. 2)
※ Refer to the SUBARU Service Manual for details.

(1.2) Performing the hole punching through the trunk lid inner panel.
(1.2.1) Align the position of the drilling gauge with the inner panel using the protrusion of indicated labels 'I' and "II" as a reference in Figure 3.
※ Drilling gauge is provided for both LH/RH sides.

(1.2.2) Secure the drilling gauge with masking tape, etc., and while holding it down so that it does not slide out of place.
Mark 5 holes on the panel surface with a magic marker.
(Fig. 4) 5 holes on each side (10 holes total).
(1.2.3) Remove the drilling gauge and punch in the marked positions.
(1.2.4) Two of the five locations are ⏀15 holes to be drilled, so as a landmark, place a circle around the punch mark at the location shown in the figure. The hole gauge indicates the size of the finished hole, so check to see if the circles are in the correct position.
(1.2.5) Close the trunk lid.

#### 2. Punching out the trunk outer panel

(2.1) Performing the hole punching through the trunk lid outer skin.
(2.1.1) Cut out the hole punching template. Cut out carefully along the cut line.
(2.1.2) Secure the the template to the shape of the outer panel by aligning it with the panel and securing it with masking tape (Fig. 5)

⚠️ Attention

Please note that any misalignment in the setting of the stencil will affect the installation of the spoiler.

(2.1.3) Align the punch with the center of the hole in the secured template. (Fig. 6) Punch 2 holes per wing bracket (4 holes total)
(2.1.4) Neatly remove the template.

⚠️ Attention

Do not punch forcefully. If the panel is deformed too much, it will interfere with the installation of parts.

#### 3. Wiring harness removal and drilling preparation

(3.1) Disconnecting the wiring harness.
(3.1.1) Remove the drivers side harness clip from the panel (Fig. 7)
(3.1.2) Pull out the harness and secure it with cloth adhesive tape. (Fig. 8)
Make sure that the harness does not pass behind the drilling area.

⚠️ Attention

Failure to follow this precaution may result in damage to the harness when drilling into the trunk lid.

(3.2) Prepare for drilling.
(3.2.1) To prevent shavings from sticking, protect the inside of the trunk compartment and the surrounding area with drop cloth, newspaper, etc. (Fig. 9)
(3.2.2) Wrap about 10 wraps of tape tightly around the drill to prevent it from penetrating (Fig. 10)
(3.2.3) Wrap about 10 wraps of tape tightly around the hole saw to prevent scratching on the trunk lid during penetration. Make sure that there is no shavings collector. (Fig. 11)

#### 4. Drilling holes in trunk lid inner panel

(4.1) Perform drilling.
(4.1.1) Drill holes at the positions of the punches struck in step (1.2.3, see fig. 12)
- ⏀8mm: 3 locations per side (6 locations total)
- Drill ⏀4mm → Drill ⏀8mm
- Drill ⏀15mm: 2 locations per side (4 locations total)
- Drill a 15mm hole in the one circled with a circle around the punching point.
- Drill ⏀4mm → hole saw ⏀15mm

⚠️ Attention

Wear protective equipment when drilling.
The hole saw should be set up directly on the surface for drilling.
Vacuum frequently to remove shavings, etc., as the trunk lid is easily scratched by shavings.
Since the trunk lid is in the form of a box, be careful not to allow debris from the hole saw to get inside the trunk lid.
At the start of drilling, check the harness position to ensure that the harness in the trunk lid does not get caught in the trunk lid.

#### 5. Drilling holes in trunk lid outer panel

(5.1) Protect the area around the trunk lid with newspaper, etc. (Fig. 13)
(5.2) Drilling the holes
Drill holes at the punch position punched in step (2.1.3). (Fig 14)
Ф 10mm: 2 locations on one side (4 locations in total)
Drill Ф 4mm→ Hole saw - Ф10mm

⚠️ Warning

Wear protective equipment when drilling.
Drill holes with the hole saw standing straight on the surface.
Vacuum frequently to remove shavings, etc., as they can easily scratch the trunk lid.
When starting drilling, check the position of the harness so that it does not get caught in the trunk lid.

#### 6. Deburring and touch-up work

(6.1) Remove burrs (front and back) from all holes. (Fig. 15)
(6.2) Remove the protective film, newspaper, etc., and clean the shavings with a vacuum cleaner, etc. Clean and degrease the area around the holes and the entire spoiler mounting surface.
(6.3) After deburring, be sure to apply touch-up paint to 4 locations on each trunk outer panel and 5 locations on each side of the trunk inner panel to prevent rust from forming.
Allow the paint to dry thoroughly for at least 30 minutes.

#### 7. Spoiler installation

Bracket install — Figure 15-b: Reinforcement bracket

(7.1) Installation of Reinforcement bracket
(7.1.1) Insert the bracket through the opening in the trunk inner panel.
The direction of the angled head is angled twoards the outside of the vehicle. (Fig 17)

(7.1.2) Temporarily fasten the reinforcement bracket with (3) bolts and (4) washers (3 places on each side) (Fig 18)

(7.1.3) Close the trunk lid.
(7.1.4) From the outside of the trunk lid, align the center of the hole in the trunk outer panel with the center of the hole in the reinforcement bracket. (Fig. 19)

(7.2) Installing the spoiler.
(7.1.4) From the outside of the trunk lid, align the center of the hole in the trunk outer panel with the center of the hole in the reinforcement bracket. (Fig. 19)
(7.2.1) ① Insert the four bolts from the stay portion of the spoiler into the holes in the trunk lid. (Fig. 20) (7.2.2) Insert the spoiler into the holes in the trunk lid, being careful not to scratch the painted surface of the trunk lid with the bolts.
(7.2.2) Open the trunk lid slowly while holding the spoiler to prevent it from falling off.
(7.2.3) Temporarily tighten the nuts (⑤) on the stud bolts.
(Fig. 21) 2 places on each side (4 places total)

⚠️ Attention

Be careful not to drop the nut into the trunk lid.

(7.2.4) Gently close the trunk lid and check that there is no abnormality such as (1) spoiler left-right difference (Fig. 22)

(7.2.5) Gently open the trunk lid again and tighten the (3) bolt and (5) nut. (Fig. 23)
Tightening torque: 7.5Nm
(5) Nut: 2 places on each side (4 places total)
Bolt ③: 3 places on each side (6 places total)

(7.3) Reassemble the parts.
(7.3.1) Insert the harness clip removed in (3.1.1) in its original position. (Fig. 24)
(7.3.2) Inside the trunk lid, reinstall the trim panel. (7 clips, see Fig. 2)

(7.3.3) Degrease the area around the ⏀15 hole and attach the ⑥ grommet sheet. (2 locations left and right, see Fig. 25)
(7.3.4) If the trunk lid and trunk compartment are dirty, clean them.
(7.3.5) If the spoiler is dirty, wipe it off with a clean rag.

#### 8. Adjustment

(8.1) Stopper height adjustment
(8.1.1) Place a piece of paper between Stopper-A and the applied surface of the Trunk hinge assy., close the trunk lid gently, then press the center of the trunk lid to lock it. (Fig. 26)
※ Please pay attention to panel deformation, etc.
(8.1.2) Pull the paper between the gaps of the trunk lid.
If the paper comes out without resistance → Go to (8.1.3)
If the paper does not come out→ Go to (8.1.5)

(8.1.3) Open the trunk lid and turn stopper A clockwise 1/4 turn (90 degrees). (Fig. 27)
(8.1.4) Return to (8.1.1) and repeat until no more paper comes out.
※ Adjust within 1 turn from the starting position.
(8.1.5) Check that there is no abnormality in the surface deviation of the trunk lid.

This completes the installation process. ## How to Adjust Spoiler Angle

※This product can be used to change the angle of the spoiler (B or C in the figure) to obtain more downforce by selecting the coupling holes for the bolts. (Fig. 28)
B: Standard shipping condition
C: Angle up → Higher downforce Note that the bolt A should not be loosened when adjusting the angle.
The angle can be adjusted without loosening it.
Adjustment tools
Torque wrench, T20 bit
Tightening torque: 7.5Nm

## Precautions

⚠️ Attention

The installation of this product will change the feel of the trunk lid opening and closing operation.
The installation of this product will reduce the amount of pop-up of the trunk lid when the trunk lid is opened, making it difficult to recognize the appearance of the trunk lid.
Please make sure that the trunk lid is closed before driving.
Carbon products are structurally designed so that the shading of the carbon mesh, irregular gaps, and undulation of the fibers may be visible. These are due to the characteristics of real carbon. Please understand this in advance.
To protect the product from scratches, deformation, and damage, please pay attention to the following.
Do not hold the spoiler when opening and closing the trunk lid.
Do not operate the trunk lid suddenly when opening or closing it.
For cleaning, use plenty of water to lift sand and dust, and wash it off gently with a soft sponge or the like.
Do not scrub hard in parts.
To prevent damage, please do not use a car wash machine.

aerodynamics

Subaru STI BRZ Dry Carbon Fiber Rear Swan Neck Spoiler Installation and Instruction Manual