Dedicated Subsystem WorkbenchPlatform Gen: 1986–2026

2023 Harley-Davidson Heritage Classic / 114 (FLSTC / FLHC / FLHCS) 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 Heritage Classic / 114 (FLSTC / FLHC / FLHCS).

Technical PassportOEM VERIFIED

Engine

1868cc

Cooling

Air / Oil-Cooled with Dual Internal Counterbalancers

Final Drive

Belt Drive

Engine Oil

4.70 L (5.00 US qt)

Spark Plug

H-D 6R10 / 6R12

Front Tire

130/90B16 73H

Gen 1986–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 1986 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 Heritage Classic / 114 (FLSTC / FLHC / FLHCS).

Configure Service Bundles→

Select Model Year:(Active: 2023)
41 Production Years (1986–2026)

1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

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Official NHTSA Safety Recalls & Technical Bulletins

2 Active Campaigns

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

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 2 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #25V375000SUSPENSION:REAR:SHOCK ABSORBER

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Defect Description

Harley Safety Recall 0188: 2018–2024 Heritage Classic rear shock pre-load adjuster mounting tab can fracture under vibration.

Safety Hazard / Consequence

Adjuster displacement can lead to tire contact and pressure loss.

Factory Remedy & Repair Action

Dealers install reinforced retention bracket countermeasure kit.

NHTSA #23V591000SUSPENSION:REAR:SHOCK ABSORBER

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OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #HD-0181Safety Recall Bulletin 0181 & 0182 / NHTSA 23V-591: Softail Rear Shock Absorber Pre-Load Fastener Rear Tire Contact

Source: RCLRPT-23V591-6615.PDF

Mandated Torques:Torque: 12–15 N·m (106–133 in-lb) (Pre-load Adjuster Bracket Mounting Screw)Torque: 95–108 N·m (70–80 lb-ft) (Upper & Lower Shock Eye Mount Bolts)Torque: 136–149 N·m (100–110 lb-ft) (Rear Axle Cone Nut)

Consumable Specs:Loctite 243 Medium Strength Blue ThreadlockerIsopropyl Alcohol Surface Cleaner

Genuine Part Numbers:102008499150010454000142

Recalls 0181 & 0188 • NHTSA 23V-591 & 25V-375

Harley-Davidson Softail Mono-Shock Pre-Load Adjuster & Tire Clearance Architecture

Fast adjuster bracket reinforcement, tire clearance inspection (≥ 10 mm), and 95–108 N·m shock mounting torques.

Shock Mounting Bolts95–108 N·m (70–80 lb-ft)

Adjuster Bracket Screw12–15 N·m (106–133 in-lb)

Chemical ThreadlockerLoctite 243 (Medium Blue)

Dynamic Tire Clearance≥ 10.0 mm (0.39 in)

Bulletin #HD-TSB-18-09Technical Service Bulletin TSB-18-09: Softail Laced Wheel Spoke Truing, Nipple Torques & Secondary Drive Belt Deflection

Source: H-D_TSB_18-09_Laced_Spokes.pdf

Mandated Torques:Torque: 6.2 N·m (55 in-lb) (Spoke Nipples - Uniform Torque Check)Torque: 136–149 N·m (100–110 lb-ft) (Rear Axle Nut)Torque: 20–24 N·m (15–18 lb-ft) (Belt Tensioner Adjuster Jam Nuts)Torque: 102 N·m (75 lb-ft) (Front Axle Shaft)

Consumable Specs:Spoke Nipple Anti-Corrosion PenetrantAnti-Seize Lubricant (Axle Sliders)

Genuine Part Numbers:43057-084090039241500017

Workshop Procedure • Heritage & Street Bob