2020 Harley-Davidson FLHRXS Road King Special Parts & Accessories
Touring
Milwaukee-Eight Touring
1,074 parts available
277 Performance
166 Maintenance
631 Accessories
2020 Harley-Davidson FLHRXS Road King Special
About the 2020 Harley-Davidson FLHRXS Road King Special
The 2020 Harley-Davidson Road King Special is a blacked-out, stripped-down bagger that pairs classic heritage with a modern 'hot rod' aesthetic. It features the high-output Milwaukee-Eight 114 V-Twin engine, providing significantly more torque than the standard Road King's 107ci unit. For 2020, it introduced the Reflex Defensive Rider Systems (RDRS) as a factory option, marking a major shift toward advanced electronic rider aids in the Touring lineup.
What Makes This Trim Special
- Milwaukee-Eight 114 Engine — Larger 114ci engine compared to the 107ci on the standard Road King.
- Blacked-Out Styling — Engine covers, exhaust, front forks, handlebars, and trim are finished in gloss or satin black rather than chrome.
- Prodigy Wheels — Gloss Black Prodigy wheels (19-inch front, 18-inch rear) vs. Slicer II wheels on the standard model.
- Stretched Saddlebags — Extended bags that wrap around the mufflers for a lower, custom profile.
- Mini-Ape Handlebars — 9-inch tall, 1.25-inch wide bars for a more aggressive riding position.
Likely but unverified:
- Low-Profile Rear Shocks — Lowered rear suspension contributes to the 'Special' slammed stance but reduces travel compared to the standard model.
Key Specifications
| Engine |
Milwaukee-Eight 114 V-Twin, 4 valves per cylinder Bore x Stroke: 102mm x 114mm; Compression Ratio 10.5:1 |
| Displacement | 1868cc (114 cu in) |
| Fuel System | Electronic Sequential Port Fuel Injection (ESPFI) |
| Cooling | Precision Oil-Cooled / Air-Cooled |
| Transmission | 6-Speed Cruise Drive |
| Drivetrain | Belt, 32/66 ratio |
| Front Suspension | 49mm Dual Bending Valve (DBV) telescopic fork |
| Rear Suspension |
Premium Low Hand-Adjustable emulsion shocks Lower profile than standard Road King for a slammed look |
| Front Brakes |
Dual 300mm floating rotors, 4-piston fixed Brembo calipers Reflex Linked Brakes with ABS standard |
| Rear Brakes | Single 300mm floating rotor, 4-piston fixed Brembo caliper |
| Front Tire | 130/60B19 61H |
| Rear Tire | 180/55B18 80H |
| Weight | 807 lbs (running order) |
| Seat Height | 26.4 in (laden) |
| Fuel Capacity | 6.0 gal |
Ownership at a Glance
What to know about maintaining a 2020 Harley-Davidson FLHRXS Road King Special
Maintenance
Wear Items
Upgrades
- Stage 1 Kit
- Windshield
- LED Lighting
Replacements
- Shift Linkage
- Exhaust Gaskets
Known Issues 3
Top reported problems from owners and mechanics
High
Brake Light Software Bug
A software error can cause brake lights to stay illuminated without rider input.
Medium
Fluid Transfer
Oil migrating from the transmission into the primary case due to pressure differentials.
Low
Compensator Noise
A 'clunk' or 'bang' sound on startup or low-speed lugging.
Parts Most Owners Need
Performance Upgrades 277
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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 166
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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 631
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Arlen Ness
Arlen Ness Adjustable Driver and Passenger Floorboards
$624.95 - $889.95
2 of 6 options fit
In Stock
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Frequently Asked Questions About the 2020 Harley-Davidson FLHRXS Road King Special
The Special has the larger 114ci engine (vs 107ci), blacked-out trim instead of chrome, stretched saddlebags, mini-ape handlebars, and larger 19-inch front/18-inch rear black wheels.
No, it does not come with a windshield from the factory. It is designed for a stripped-down look, though H-D offers quick-detach windshields as an accessory.
Reflex Defensive Rider Systems (RDRS) is an optional suite of electronics including cornering-enhanced ABS, traction control, drag-torque slip control, hill hold control, and tire pressure monitoring.
It typically takes between 4.5 and 5.0 quarts of 20W-50 oil with a filter change. Always check the dipstick while the bike is on its jiffy stand and the engine is hot.
Sumping was largely resolved by 2020 thanks to a redesigned oil pump with a better scavenger gear, though it is still a point of inspection for high-performance builds.
The laden seat height is approximately 26.4 inches, making it one of the more accessible touring bikes for shorter riders.
It uses a 30Ah or 32Ah AGM battery, commonly referenced as part number YIX30L or 66010-97D.
Yes, it features Electronic Sequential Port Fuel Injection (ESPFI) as standard.
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