SCREAMIN EAGLE OHLINS INVERTED FORK LEGS

94100562A2025-09-16

GENERAL INFORMATION

Table 1. General Information

Kits	Suggested Tools	Skill Level⁽¹⁾
45400392A, 45400393A	Safety Glasses, Torque Wrench, DIGITAL TECHNICIAN II (Part Number:HD-48650)

(1) A combination of software calibration, special tools or techniques required for installation

KIT CONTENTS

Figure 1. Kit Contents: Screamin Eagle Ohlins® Inverted Fork Legs

Table 2. Kit Contents: Screamin Eagle Ohlins® Inverted Fork Legs

Verify that all contents are present in the kit before installing or removing items from vehicle.
Item	Qty	Description	Part No.	Notes
1	1	47mm fork assembly, left, telescoping, black	45400410
1	1	47mm fork assembly, left, telescoping, gold	45400412
2	1	47mm fork assembly, right, telescoping, black	45400409
2	1	47mm fork assembly, right, telescoping, gold	45400411
3	4	Screw, socket head	10200802
4	4	Screw, hex socket, lock	2479
5	1	Screw, cap screw, M8	45500132
6	2	Reflector, amber	67900659
7	2	Reflector, amber, flat	67900212A

GENERAL

Instruction sheet is also available electronically. To verify you are using the most current version available, do one of the following:

Go to h-d.com/isheets
Scan QR code in upper left corner of the instruction sheet

NOTE

This instruction sheet may have a Supplemental Video to assist installer in clarifying a certain part of the assembly. A linked video would be located at the end of this instruction sheet.

Models

For model fitment information, see the Parts and Accessories (P&A) Retail Catalog or the Parts and Accessories section of www.harley-davidson.com.

Contact Harley-Davidson Customer Support Center at 1-800-258-2464 (U.S. only) or 1-414-343-4056.

Installation Requirements

WARNING

Rider and passenger safety depend upon the correct installation of this kit. Use the appropriate service manual procedures. If the procedure is not within your capabilities or you do not have the correct tools, have a Harley-Davidson dealer perform the installation. Improper installation of this kit could result in death or serious injury. (00333b)

NOTE

This instruction sheet references service manual information. A service manual and CVO supplement service manual for the year and model motorcycle is required for this installation. They are available from:

A Harley-Davidson dealer.
H-D Service Information Portal, a subscription-based access available for most 2001 and newer models.

These items are available at your local Harley-Davidson dealership.

2024-later Street Glide (FLHX): Separate purchase of Screamin’ Eagle Ohlins® Inverted Fork Installation Kit (Part No. 45400391) is required.
2024-later Road Glide (FLTRX): Separate purchase of Screamin’ Eagle Ohlins® Inverted Fork Installation Kit (Part No. 45400390) is required.
Axial Mount calipers to radial mount caliper requires Anti-lock Braking System (ABS) re-flash using Digital Technician II (DT II).
Servicing Front Forks: A separate purchase of Fork Oil (Part No. 62600133).

PREPARE

1.	Secure motorcycle for service. See service manual. a. Set motorcycle upright. b. Raise front wheel for service. c. Secure with tie-downs.
2.	Remove left saddlebag. See service manual.
3.	Remove left side cover. See service manual.
4.	Remove main fuse. See service manual.

REMOVE FAIRING

Fork Mounted

1.	Remove outer fairing. See service manual.
2.	Remove air deflector assembly. See service manual.
3.	Remove dash panel. See service manual.
4.	Detach fairing for service: a. See Figure 2. Disconnect harness connectors (1). b. Remove wire ties (2). c. See Figure 3. Remove screws (1). d. Remove fairing (3). e. Place fairing on non scratch surface.

1	Connectors (2)
2	Wire ties (3)

Figure 2. Inner Fairing Fasteners

1	Screws (2)
2	Guide pins (2)
3	Fairing

Figure 3. Fairing Fasteners

Frame Mounted

1.	Remove windshield. See service manual.
2.	Remove air duct cover and air duct bezel. See service manual.
3.	Remove air duct vane assembly. See service manual.
4.	Remove left and right speaker grilles. See service manual.
5.	Remove outer fairing. See service manual.
6.	Remove headlamp. See service manual.
7.	See Figure 4. Release wire locator (1) and route headlamp wire (8) out of inner fairing assembly (3).
8.	Disconnect two main harness connectors (7).
9.	Draw branches of main harness out of inner fairing through openings in fairing bracket.
10.	Remove inner fairing support screws (5).
11.	Remove inner fairing mount screws (2).
12.	Raise the inner fairing assembly (3) off the inner fairing mounting bracket (4) and remove.

1	Wire locator
2	Screws (4)
3	Inner fairing assembly
4	Inner fairing mounting bracket
5	Screws (2)
6	Fairing main support bracket
7	Main harness connectors (2)
8	Headlamp harness

Figure 4. Inner Fairing Assembly

REMOVE

1.	Remove front fender. See service manual.
2.	Detach front brake calipers. See service manual. a. If working on a CVO model, see CVO supplement service manual.
3.	Remove front wheel. See service manual.
4.	Remove Original Equipment (OE) front forks. See service manual. a. If working on a CVO model, see CVO supplement service manual.

INSTALL

NOTE

DO NOT Install Screamin Eagle Ohlins® Inverted Fork Legs on a Non CVO Original Equipment (OE) fork stem assembly.

Screamin’ Eagle Ohlins® Inverted Fork Installation Kit (Part No. 45400390 or 45400391) is required for a Non CVO Original Equipment (OE) vehicle. Refer to Installation Requirements.

This will require the removal of OE:

Front brake calipers
Steering Head/Fork Stem and bracket assembly
Front wheel speed sensor
Steering head bearing cups

1.	Install Screamin Eagle Ohlins® Inverted Fork Installation kit. Refer to Installation Requirements.
2.	Install front fork tube assembly. a. Insert each fork tube assembly (4) through lower fork bracket (6) and upper fork bracket (2). b. Refer to Table 3. Measure distance (3) from top of fork tube to top of lower fork bracket (6) to set fork height. c. Tighten lower fork bracket pinch screws (5) alternately (top fastener, bottom fastener, repeat) until specification is maintained. Torque: 20–24.5 N·m (15–18 ft-lbs) Lower pinch screw d. Tighten upper fork bracket pinch screws (1). Torque: 20–24.5 N·m (15–18 ft-lbs) Upper pinch screw

Table 3. Fork Installation Distance

FORK INSTALLATION DISTANCE	IN	MM
Distance	8.83-8.95	224.3-227.3

1	Upper fork bracket pinch screw
2	Upper fork bracket
3	Distance
4	Fork tube assembly
5	Lower fork bracket pinch screw (2)
6	Lower fork bracket

Figure 5. Front Fork Length

INSTALL FAIRING

Fork Mounted

1.	Attach: a. See Figure 3. Install fairing (3). b. Install screws (1). c. See Figure 2. Install wire ties (2). d. Connect harness connectors (1).
2.	Attach fairing for service.
3.	Install dash panel. See service manual.
4.	Install air deflector assembly. See service manual.
5.	Install outer fairing. See service manual.

Frame Mounted

1.	Lower inner fairing assembly (3) onto the inner fairing mounting bracket (4) and install.
2.	Install inner fairing mount screws (2).
3.	Install inner fairing support screws (5).
4.	Route branches of main harness into inner fairing through openings in fairing bracket.
5.	Connect two main harness connectors (7).
6.	See Figure 4. Route headlamp wire (8) into inner fairing assembly (3) and secure wire locator (1).
7.	Install headlamp. See service manual.
8.	Install outer fairing. See service manual.
9.	Install left and right speaker grilles. See service manual.
10.	Install air duct vane assembly. See service manual.
11.	Install air duct cover and air duct bezel. See service manual.
12.	Install windshield. See service manual.

REFLECTOR

1.	Models without fairing lowers installed and fork mounted reflectors: a. Ambient temperature should be at least 16 °C (60 °F) for proper adhesion of the reflectors to the fork sliders. b. Allow at least 24 hours after applying the reflectors before exposing the area to vigorous washing, strong water spray or extreme weather. c. The adhesive bond will increase to maximum strength after about 72 hours at normal room temperature.
2.	Clean reflector mounting area of fork slider with a 50:50 mixture of isopropyl alcohol and distilled water. Allow to dry completely.
3.	See Figure 6. Peel liner from tape. Install reflector (1) in position (3) on fork as shown. Press firmly into place. a. Hold reflector in position with steady pressure for approximately one minute.
4.	Repeat procedure on opposite side.

1	Reflector
2	Inverted fork
3	Dimension: 40mm ±5

Figure 6. Reflector Replacement, Front Fork

Models with fairing lowers installed and fender mounted reflectors:

1.	See Figure 7. Install reflectors on left and right sides of front fender. a. Ambient temperature should be at least 16 °C (60 °F) for proper adhesion of the reflectors to the front fender. b. Allow at least 24 hours after applying the reflectors before exposing the area to vigorous washing, strong water spray or extreme weather. c. The adhesive bond will increase to maximum strength after about 72 hours at normal room temperature.
2.	Clean and prep surfaces on both sides of front fender. NOTE See Figure 7. Reflector should be located approximately ¼ inch (6.35 mm) (1) from rivet and align to the lower fender edge (3). a. Peel liner from tape. Install reflector (2) in position (3) on fork as shown. Press firmly into place. b. Hold reflector in position with steady pressure for approximately one minute.
3.	Repeat on opposite side.

1	Dimension: ¼ inch (6.35 mm)
2	Reflector
3	Fender edge

Figure 7. Reflector Placement, Front Fender

COMPLETE

1.	Install front wheel. See service manual.
2.	Attach front brake calipers. See CVO supplement service manual.
3.	Install front fender. See service manual. NOTE When performing Calibration Reflash to ABS / Electro Hydraulic Control Unit (EHCU) per kit instructions for the inverted forks > You must click through on EHCU in the reflash section on DT II to see the option to select for the style of forks installed, even if the EHCU calibration shows up-to-date.
4.	Non-CVO models only: Re-flash ABS system using special tool. Special Tool: DIGITAL TECHNICIAN II (HD-48650)
5.	Check and adjust swing-back as needed. Follow swing-back specification in the service manual per model. a. For example, after installing Ohlins inverted forks on a FLTRX, set the swing-back according to the specification for FLTRX.

FORK SETUP

Ohlins® forks are pre-set at Harley-Davidson recommended preload and damper settings. See recommended adjustments based on vehicle loading conditions.

Compression vs Rebound Overview

Compression and rebound are terms used to describe how a fork absorber responds to bumps and impacts.

Compression Damping is how quickly or slowly the spring is allowed to compress.
Rebound Damping is how quickly or slowly the spring extends back to its original position.

Compression:

When a fork is compressed, the piston rod is pushed into the damper tube.
Compression resistance controls how much a vehicle's suspension moves when it hits a bump.
More compression resistance results in a firmer suspension.
Compression adjustment can help with handling and cornering.

Rebound:

When a fork rebounds, the piston rod is pulled out of the damper tube.
Rebound controls how quickly a fork returns to its neutral position after being compressed.
Rebound adjustment can help with comfort.
Too much rebound can cause the forks to pack, which can lead to an uncomfortable ride.

Pre-Load

Pre-load is set equal on both forks. To set the desired pre-load, loosen the adjuster by turning them counter-clockwise until it stops turning. This is the minimum pre-load setting. Tighten the adjuster by turning it clockwise to the desired setting. One full rotation of the adjuster is equal to 1mm of pre-load change.

Fork preload is the amount of compression applied to a spring when the fork is fully extended. It's used to adjust the suspension's range of motion and the amount of force the spring pushes back.
More preload raises the vehicle's suspension, making it harder and helping prevent bottoming out.
Less preload lowers the vehicle's suspension, making it softer and helping prevent nose-diving when braking

Figure 8. Pre-Load Adjustment

Table 4. Pre-Load Table

Rider Weight		Front Forks
LBS	KG	Turns from Minimum¹
<150	<68	5
170	77	6
190	86	7
210	95	8
230	104	9
250	113	10
270	122	11
290	132	12
300 to GVWR	131 to GVWR	13
NOTE DO NOT exceed Gross Vehicle Weight Rating (GVWR) for any loading condition.

(1) Make fork preload changes to both forks as specified.

Damping

NOTE

A hex wrench is provided in kit for damping adjustment.

The right fork is rebound damping only.
The left fork is compression damping only.

Figure 9. Damping Adjustment

Table 5. Front Forks

Compression¹	Rebound¹
16	10


Note: (1) Damping adjuster settings are done by tightening adjuster clockwise until it stops and then turning the adjuster counter-clockwise to the first click (this is position 1), then count clicks while turning adjuster counter-clockwise to the desired setting

MAINTENANCE and SERVICE

WARNING

Shock absorbers contain compressed nitrogen. Attempting to service shock absorbers can cause an explosion, which could result in death or serious injury. Servicing requires special tools and training from Öhlins. (17604a)

NOTE

The Öhlins Complete Tool Kit is required for maintenance and service. TOOL KIT - COMPLETE (Part Number:14900177)

1.	Service for front forks is recommended every 18,600 miles (30,000 km) or 3 years.
2.	Maintain product packaging to send front forks to an Öhlins certified dealer for service or repair, outside of what is shown in this instructions.

List of main components that will be replaced at service intervals:

Seal
Seal slider
Dust seal
Bushings
O-rings
Ohlins High Performance Fork Oil (Part No. 62600133)

NOTE

It is strongly recommended to work with only one fork leg at a time. This greatly avoids mixing parts.

See Figure 10. Clamp fork leg (2) in bench vise (1) with soft jaws.

Release spring preload by turning adjustment nut (3) fully counterclockwise.

Special Tool: 14MM PRELOAD SOCKET TOOL (14900176)

Open damping adjusters (4) by turning fully counterclockwise.

Special Tool: 3MM ALLEN KEY TOOL (14900159)

Install top nut tool (8) to top cap.

Special Tool: TOP CAP R&T (14900160)

Loosen outer tube (7) from top cap.

Slide outer tube (7) all the way down.

Install spanner (6) to top cap lock nut.

Special Tool: 17MM SPANNER TOOL (14900172)

Using wrench (5), remove top cap from shaft.

Special Tool: 14MM PRELOAD SOCKET TOOL (14900176)

1	Bench vise
2	Fork tube
3	Adjustment nut
4	Damping adjuster
5	Wrench on top cap
6	Spanner on lock nut
7	Outer tube
8	Top nut tool

Figure 10. Disassemble Fork Tube

See Figure 11. Install spanner (3) to top cap lock nut (1).

Special Tool: 17MM SPANNER TOOL (14900172)

10.

Remove lock nut (1) using a deep well socket (2).

1	Lock nut
2	Deep well socket
3	Spanner

Figure 11. Remove Lock Nut

11.

See Figure 12. Remove spring seat (2).

12.

Remove spring (3).

13.

Remove preload tube (4).

a. Use a wire with a hook.

1	Lock nut
2	Spring seat
3	Spring
4	Preload tube

Figure 12. Remove Preload Tube

14.

Drain oil from fork tube.

a. Use a suitable container.

b. Follow local city, county or state guidelines for fluid disposal.

15.

See Figure 10. Clamp fork leg (2) in bench vise (1) with soft jaws.

16.

Remove outer tube.

17.

See Figure 13. Remove scraper (2) from outer tube.

18.

Put outer tube on workbench with seal side up.

NOTE

Be careful not to scratch sealing surface (1) on inside of outer tube.
Use a flat tire lever or similar and a rag on edge of outer tube when disassembling seal.

19.

Remove circlip (3), seal (4) and support washer (5).

1	Sealing surface
2	Scraper
3	Circlip
4	Seal
5	Support washer

Figure 13. Scraper Assembly

20.

See Figure 14. Put outer tube with seal side down on a soft surface.

21.

Use a heat gun to heat up outer tube where bushings are positioned.

Temperature: 100 °C (212 °F)

Special Tool: FORK BUSHING TOOL (14900162)

22.

Use attachment bar together with bushing removal tool and a plastic hammer to remove bushings.

Special Tool: 43MM BUSHING REMOVAL TOOL (14900165)

Special Tool: 48MM BUSHING REMOVAL TOOL (14900166)

1	Outer tube
2	Heat gun
3	Plastic hammer
4	Bushing removal tool
5	Bushings

Figure 14. Remove Bushings

23.

Clean all parts thoroughly.

24.

Basic service kit contains:

a. Upper bushings

b. Lower bushings

c. Fork seals

d. Top cap O-rings

25.

See Figure 15. Use a long brush (1) to apply threadlocker on upper bushing seat inside outer tube (2).LOCTITE 243 MEDIUM STRENGTH THREADLOCKER AND SEALANT (BLUE) (99642-97)

26.

Install new upper bushing.

1	Long brush
2	Outer tube

Figure 15. Apply Loctite

27.

See Figure 16. Put outer tube (3) with seal side up on a soft surface.

28.

Use attachment bar, bushing mounting tool, and bar guide (2) and tap bushing to a solid stop with a plastic hammer (1).

Special Tool: FORK BUSHING TOOL (14900162)

Special Tool: 43MM GUIDE BAR TOOL (14900163)

Special Tool: 48MM GUIDE BAR TOOL (14900164)

1	Plastic hammer
2	Bar guide
3	Outer tube

Figure 16. Bar Guide

1	Attachment bar

Figure 17. Attachment Bar

29.

See Figure 18. Apply multi-purpose grease on lower bushing seat inside outer tube.

30.

Install bushing same way as upper bushing.

Figure 18. Multi-Purpose Grease

31.

Apply multi-purpose grease on sealing surface inside outer tube.

32.

See Figure 19. Install support washer (4).

33.

Install seal (3) with fork seal driver.

Special Tool: FORK SEAL DRIVER (HD-45305)

34.

Install circlip (2).

35.

Install scraper (1) by hand.

1	Scraper
2	Circlip
3	Seal
4	Support washer

Figure 19. Install Seal

36.

See Figure 20. Apply a thin layer of Harley-Davidson Fork Oil (Part No. 62600133) on outer surface of inner tube (1), seal and scraper in outer tube (2).

37.

Carefully install outer tube (2) and slide it all the way down.

1	Lubricate inner tube
2	Outer tube

Figure 20. Install Outer Tube

38.

See Figure 21. Fill fork leg with Ohlins High Performance Fork Oil (Part No. 62600133) until it covers cylinder tube.

1	Front fork fluid
2	Front fork

Figure 21. Fill Front Fork with Fluid

39.

Verify the damping adjuster is fully backed off.

40.

Install the top cap directly on the shaft extension.

41.

Pull shaft up and down 10 to 12 times to remove air from system.

42.

Hand-tighten top cap to outer tube.

43.

Exercise fork leg through 10 to 15 cycles to complete bleeding process.

44.

Remove top cap.

45.

See model specific iSheet for oil level specification.

46.

Place outer tube and piston shaft in their bottom position.

47.

See Figure 22. Measure and set oil level 4½-in. (114mm) from top (1) of outer tube without main spring and preload tube installed.

a. Use Harley-Davidson fork oil gauge.

Special Tool: FRONT FORK OIL LEVEL GAUGE (HD-59000-B)

1	Depth of fork oil

Figure 22. Front Fork Oil Level Gauge

48.

See Figure 23. Remove adjustment rod and install pull up tool (3).

49.

Position flange on preload tube up.

50.

Install preload tube in fork leg.

51.

Install spring in fork leg with identification mark on spring facing up.

52.

Install spring seat (2).

53.

Top out piston shaft.

54.

Remove pull up tool (3).

55.

Install top cap lock nut (1).

56.

Install top cap locknut into position using a deep-well socket.

1	Top cap lock nut
2	Spring seat
3	Pull up tool

Figure 23. Install Spring Seat

57.

See Figure 24. Install adjustment rod (1) into shaft (2).

1	Adjustment Rod
2	Shaft
3	Front fork

Figure 24. Install Adjustment Rod

58.

See Figure 25. Install top cap (5) on shaft, making sure preload and damping are at minimum settings.

59.

Make sure to install correct top cap on correct fork leg.

a. Compression on left (1).

b. Rebound on right (2).

60.

Use spanner (4) and wrench or socket (3) to tighten top cap lock nut. Tighten.

Torque: 20 N·m (177 in-lbs)

Special Tool: 17MM SPANNER TOOL (14900172)

Special Tool: 14MM PRELOAD SOCKET TOOL (14900176)

1	Compression adjustment on left
2	Rebound adjustment on right
3	Socket or wrench
4	Spanner
5	Top cap

Figure 25. Install Top Cap

61.

Apply multi-purpose grease to new top cap O-ring and threads.

62.

Install new top cap O-ring.

63.

See Figure 26. Fully extend fork leg. Use top nut tool (8) and tighten top cap on outer fork tube. Tighten.

Torque: 15 N·m (133 in-lbs)

Special Tool: TOP CAP R&T (14900160)

64.

Adjust preload (3) in both fork legs to same setting as prescribed in iSheet for rider, passenger, and cargo weight or to customer’s setting prior to performing service.

Special Tool: 14MM PRELOAD SOCKET TOOL (14900176)

65.

Adjust compression and rebound damping adjusters (4) as prescribed in iSheet or to customer’s setting prior to performing service

Special Tool: 3MM ALLEN KEY TOOL (14900159)

1	Bench vise
2	Fork tube
3	Adjustment nut
4	Damping adjuster
5	Wrench on top cap
6	Spanner on lock nut
7	Outer tube
8	Top nut tool

Figure 26. Assemble Fork Tube

66.

Clean components prior to installation to vehicle.

a. Use an O-ring and surface-finish-safe detergent.

b. Do not use brake cleaner or any other solvent.

c. SPEEDSOLV is recommended by Öhlins.