2020 Harley-Davidson Road King (FLHR) Parts & Accessories
Touring
Milwaukee-Eight Touring (2017-Present)
1,117 parts available
278 Performance
175 Maintenance
664 Accessories
2020 Harley-Davidson Road King (FLHR)
About the 2020 Harley-Davidson Road King (FLHR)
The 2020 Harley-Davidson Road King is a classic touring motorcycle that blends 1960s nostalgic styling with modern Milwaukee-Eight power. It features the signature Hiawatha headlamp and chrome nacelle, a large detachable windshield, and hard one-touch saddlebags. For the 2020 model year, the Road King gained the option for the Reflex Defensive Rider Systems (RDRS), bringing advanced electronic rider aids to the traditional platform.
What Makes This Trim Special
- Chrome Styling — Extensive chrome on the engine, exhaust, front forks, and headlamp nacelle.
- Hiawatha Headlamp — Large 7-inch chrome nacelle with a classic 1960s appearance.
- Detachable Windshield — Comes standard with a clear, quick-release windshield (not found on the Special trim).
- Slicer II Wheels — 18-inch cast aluminum wheels front and rear.
- Milwaukee-Eight 107 — Standard engine is the 107ci, whereas the Road King Special (FLHRXS) features the 114ci.
Key Specifications
| Engine |
Milwaukee-Eight 107 V-Twin 100mm x 111.1mm bore and stroke; 111 ft-lb of torque @ 3,250 RPM |
| Displacement | 1,746cc (107 cu in) |
| Fuel System | Electronic Sequential Port Fuel Injection (ESPFI) |
| Cooling | Air-cooled with oil-cooled cylinder heads |
| Transmission | 6-Speed Cruise Drive |
| Drivetrain | Belt drive |
| Front Suspension |
49mm Dual Bending Valve (SDBV) telescopic fork 117mm of travel |
| Rear Suspension |
Premium low-profile hand-adjustable emulsion shocks 54mm of travel; tool-free preload adjustment |
| Front Brakes | Dual 300mm floating rotors, 4-piston Brembo calipers |
| Rear Brakes | Single 300mm fixed rotor, 4-piston Brembo caliper |
| Front Tire | 130/70B18 63H |
| Rear Tire | 180/55B18 80H |
| Weight | 828 lbs (wet) |
| Seat Height |
26.3 inches (laden) Unladen seat height is approximately 27.8 inches |
| Fuel Capacity | 6.0 gallons |
Ownership at a Glance
What to know about maintaining a 2020 Harley-Davidson Road King (FLHR)
Maintenance
Wear Items
Upgrades
- Stage 1 Kit
- LED Lighting
- Handlebars
Replacements
- Battery
- Windshield Bushings
Known Issues 3
Top reported problems from owners and mechanics
Medium
Brake Light Software Recall
A recall affected 2020-2022 models where the brake light could stay illuminated regardless of rider input. Fixed via a software update.
Medium
Fluid Transfer
Transmission fluid migrating into the primary case. While largely addressed by 2020 with a factory vent, some owners still report migration on high-mileage bikes.
Low
Plastic Intake Manifold
The stock intake manifold is plastic and can warp or leak over time, leading to a lean condition or erratic idle.
Parts Most Owners Need
Performance Upgrades 278
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Moose Racing
All Balls Racing Fork Oil and Dust Seal Kits
$24.95 - $126.95
3 of 127 options fit
In Stock
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Maintenance Parts 175
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Moose Racing
All Balls Racing Wheel Bearing and Seal Kits
$24.95 - $84.95
4 of 197 options fit
In Stock
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Alloy Art
Alloy Art Mfg. Multi Rear Brake Caliper Mount
$797.95 - $850.95
4 of 4 options fit
In Stock
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Arlen Ness
Arlen Ness Big Sucker™ Stage I Air Filter Kits for M-Eight
$399.95 - $534.95
7 of 17 options fit
In Stock
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Accessories 664
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Arlen Ness
Arlen Ness Adjustable Driver and Passenger Floorboards
$624.95 - $889.95
2 of 6 options fit
In Stock
Fits
Frequently Asked Questions About the 2020 Harley-Davidson Road King (FLHR)
No, the FLHR Road King is a 'naked' touring bike without a fairing or built-in audio system. Owners typically use Bluetooth helmet headsets or add handlebar-mounted speakers.
The standard Road King (FLHR) has chrome trim, a windshield, and a 107ci engine. The Special (FLHRXS) is blacked-out, has no windshield, features a 114ci engine, and uses stretched saddlebags.
Yes, Reflex Linked Brakes with ABS were standard equipment on the 2020 Touring line.
RDRS (Reflex Defensive Rider Systems) is an optional electronic suite including cornering ABS, traction control, and hill hold. It was a $995 factory option in 2020; check the left handlebar for a 'TC' button to confirm if it is equipped.
The engine oil capacity is approximately 4.75 to 5.0 quarts. It is a dry-sump system, so check the level on the jiffy stand while the engine is at operating temperature.
Yes, the Road King features a quick-detach windshield that can be removed in seconds without tools for a 'cruiser' look.
With a 6-gallon tank and an average of 43-45 MPG, the theoretical range is approximately 250-270 miles, though the low fuel light typically triggers around 200 miles.
Yes, the H-D Smart Security System with a proximity-based hands-free fob was standard for 2020.
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