Dedicated Subsystem WorkbenchPlatform Gen: 2017–2026

2023 Harley Davidson Road Glide (Milwaukee-Eight) Suspension Hydraulics, Fork Fluids & Sag Tuner

Front fork travel, rear shock travel, spring preload, damping click baselines, and dynamic rider sag calculator for 2023 Harley Davidson Road Glide (Milwaukee-Eight).

Technical PassportOEM VERIFIED

Engine

1746cc

Cooling

Precision Air/Oil-Cooled

Final Drive

Belt Drive

Engine Oil

3.80 L (4.00 US qt)

Spark Plug

HD 6R12 / NGK DCPR7E

Front Tire

130/60B19

Gen 2017–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2017 through 2026.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2023 Harley Davidson Road Glide (Milwaukee-Eight).

Configure Service Bundles→

Select Model Year:(Active: 2023)
10 Production Years (2017–2026)

2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

View Suggested Items ↓

Suspension Hydraulics, Fork Fluids & Interactive Sag Tuner

Showa • KYB • WP Standards

OEM hydraulic capacities, air-gap measurement standards, clicker baselines, and mathematical rider sag tuning.

Shop Fork Seals & Wipers

Fork Architecture

Conventional Dual Bending Valve (49mm Showa SDBV)

Oil Volume Per Leg

700 ml (23.7 US fl oz) per leg

OEM Fluid Specification

Harley-Davidson Type E Fork Oil

Air-Gap Spec (Oil Level)

135 mm (5.31 in) compressed, spring removed

Fork Seal Dimensions

49 x 60 x 10.5 mm

Total Suspension Travel

Front: 117 mm • Rear: 54 mm

Target Rider Sag: 32 - 38 mm (27 - 32% of 117 mm travel)

Front Preload Baseline

Non-adjustable internal factory spring

Rebound Damping Baseline

Showa SDBV progressive bending valve

Compression Damping Baseline

Showa SDBV progressive bending valve

Target Free Sag (Unladen)

20 - 25 mm

Enter 3-Point Sag Measurements (mm)

L1: Extended

L2: Static Bike

L3: In Full Gear

Suspension Sag Diagnosis & Geometry Status

Enter your extended, static, and rider measurements on the left (or select a preset) to compute exact sag percentages and spring preload recommendations.

Factory Fluid StandardDirect Spec

Maxima V-Twin Fork Oil Type E (1 Liter)

Formulated with anti-foam agents and shear-stable viscosity index improvers to prevent damping fade under aggressive riding heat.

Fork & Dust Seal KitExact Stanchion Fit

All Balls Racing 49mm Fork & Dust Seal Kit

Features directional triple-lip rubber seal profile and external garter springs engineered to withstand heavy stanchion flex without weeping.

Air-Gap Tuning PhysicsBottoming Control

135 mm (5.31 in) compressed, spring removed

Trapped air column acts as a progressive spring in final 30% of stroke. Adding +5mm oil increases bottoming resistance without stiffening small bump compliance.

Recommended Maintenance Parts: Maxima V-Twin Fork Oil Type E (1 Liter) • All Balls Racing 49mm Fork & Dust Seal Kit

Shop Fork Fluids Find Direct-Fit Fork Seals

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2023 Harley Davidson Road Glide (Milwaukee-Eight) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

6 Documented Bulletins

Bulletin #M1524M1524: RECALL 0177 - 2019 - 2021 SPORTSTER - HEADLAMP BULB SHIELD

Source: Harley_M1524_Recall0177.pdf

Mandated Torques:Torque: 5.8–6 in-lbs (0.66–0.68 N·m) (Bulb Shield Screw)Torque: 35–44 in-lbs (4–5 N·m) (Bracket to Visor Screws)Torque: 10–16 ft-lbs (13.5–21.6 N·m) (Visor Bracket Screws)

Consumable Specs:Loctite 243 Medium Strength Blue Threadlocker (HD Part # 99642-97)

Genuine Part Numbers:68297-05A9150010799642-97

Fastener Stack ArchitectureExploded View: Headlamp Visor Fastener & Vibration Stack (Bulletin M1524)

3-Stage Torque Map

Select any fastener or shield component to inspect exact torque specifications.

Component InspectorNHTSA Recall 0177 / M1524

Self-Tapping Shield Screw with Blue Loctite 243

Consumable: Loctite 243 (HD # 99642-97)

Factory Torque Specification

5.8–6.0 in-lbs (0.66–0.68 N·m) (CRITICAL LOW TORQUE)

Technical Assembly Note

MUST apply Loctite 243 Blue Threadlocker. Due to reuse of self-tapping screw into stamped bracket, STRICTLY do not exceed 6 in-lbs or threads will strip.

Vibration & Chemical Retention

Loctite 243 Medium Strength Blue Threadlocker (HD Part # 99642-97) mandatory on bulb shield screw to prevent thermal loosening.

Bulletin #M1568M1568: SAFETY RECALL 0635 - FRONT BRAKE LINE BANJO BOLT ASSEMBLY

Source: Harley_M1568_Recall0635.pdf

Mandated Torques:Torque: 19–21 ft-lbs (25.8–28.5 N·m) (Front Brake Line Banjo Bolts)

Consumable Specs:Harley-Davidson Platinum Label DOT 4 Brake Fluid

Genuine Part Numbers:2879401841751-06A41800770418007724180077341800774

Technical IllustrationExploded View: Hydraulic Brake Switch & Banjo Bolt Assembly

Official NHTSA PDF

Hover or Click Component to Inspect

Component SelectedOEM # 41747-06

Cross-Drilled Banjo Bolt

Cross-drilled hydraulic passage. Torque to exact factory range. Do NOT over-tighten or bolt can shear.

Torque Specification:19–21 ft-lbs (25.5–28.5 N·m)

Select Stack Layer:

Electrical Harness Schematic40-Pin BCM Electrical Harness Pinout & Wiring Map (Bulletin M1568 / Recall 0635)

40-Way Sealed Header • Cavity F3

Click Pin F3 or center keyway to inspect technical harness specifications

Inspection TargetRecall 0635 / M1568

BCM Terminal Cavity F3 (Recall Signal Input)

Jumper Terminal Wire # 69203239

Mechanical Engagement:Terminal Click-Lock Retention

MANDATORY RECALL PIN INSERTION. Insert jumper terminal into cavity F3 of the 40-way BCM harness connector until an audible click is heard. Tug lightly to verify positive secondary terminal engagement.

Interactive Circuit Nodes:

STEP 1: HARNESS CLICK VERIFICATIONSlide terminal wire 69203239 into Cavity F3 until secondary TPA wedge clicks flush. Perform gentle pull test.

STEP 2: CHASSIS GROUND TORQUEClean left-side frame ground stud. Fasten jumper ring terminal to 45–60 in-lbs (5.1–6.8 N·m).

STEP 3: DIGITAL TECHNICIAN II SYNCFlash BCM software to 28794018 YM0+. Depress rear brake pedal to trigger auto-stop calibration countdown.

Chassis Routing ArchitectureTrike Frame Jumper Wire Routing & EHCU Ground Map (Bulletin M1568 / Recall 0635)

Figures 5 & 6 • Behind EHCU

Click routing channel, ground stud, cable straps, or switch to view shop notes

Chassis Routing NodeRecall 0635 / M1568

Under-Tray Sub-Harness Route (Behind EHCU)

Recall Routing Path (Figure 6)

Mechanical Anchor:Protected Chassis Channel

MANDATORY ROUTING CLEARANCE. Route jumper harness # 69203239 behind the Electro-Hydraulic Control Unit (EHCU) assembly. Keep clear of hot exhaust pipes and moving suspension linkages.

Interactive Routing Targets:

Bulletin #M1572M1572: INSTRUMENT MODULE SOFTWARE UPDATE - PAN AMERICA & SPORTSTER S

Source: Harley_M1572_SupportDocs.pdf

Bulletin #Recall0171Part 573 Safety Recall Report 18V-076: ABS Hydraulic Control Unit Flush & Fluid Replacement

Source: Harley_Recall0171_ABS_4574.pdf

Mandated Torques:Torque: 17–22 ft-lbs (23.0–30.0 N·m) (ABS Manifold / Caliper Banjo Bolts)Torque: 35–61 in-lbs (4.0–6.9 N·m) (Brake Caliper Bleeder Screws)

Consumable Specs:Harley-Davidson Platinum Label DOT 4 Brake Fluid

Genuine Part Numbers:41731-01

Bulletin #M1482Safety Recall Campaign 0173: Secondary Clutch Actuator Piston Assembly

Source: Harley_Recall0173_ClutchActuator_8825.pdf

Mandated Torques:Torque: 84–108 in-lbs (9.5–12.2 N·m) (Actuator Housing Mounting Bolts)Torque: 35–61 in-lbs (4.0–6.9 N·m) (Clutch Bleeder Valve Screw)Torque: 17–22 ft-lbs (23.0–30.0 N·m) (Hydraulic Line Banjo Bolt)

Consumable Specs:Harley-Davidson Platinum Label DOT 4 Brake Fluid

Genuine Part Numbers:3720013137200131A91500093

Technical SchematicExploded View: Secondary Clutch Actuator Piston Assembly (Recall 0173)

Interactive CAD View