2018 Harley-Davidson FLHRXS Road King Special Parts & Accessories
Touring
Milwaukee-Eight Touring (2017-2023)
1,093 parts available
284 Performance
171 Maintenance
638 Accessories
2018 Harley-Davidson FLHRXS Road King Special
About the 2018 Harley-Davidson FLHRXS Road King Special
The 2018 Harley-Davidson FLHRXS Road King Special is a modern, blacked-out take on the classic touring platform, powered by the Milwaukee-Eight 107 engine. It distinguishes itself from the standard Road King with aggressive custom styling, including mini-ape handlebars, stretched saddlebags, and a lack of a windshield. This model year represents the second year of the Milwaukee-Eight engine in the touring lineup, featuring refined suspension and standard ABS.
What Makes This Trim Special
- Blacked-Out Styling — Engine covers, exhaust, front forks, handlebars, and headlight nacelle are finished in gloss or satin black instead of chrome.
- Mini-Ape Handlebars — 9-inch tall, 1.25-inch diameter bars for a more aggressive riding posture.
- Stretched Saddlebags — Hard bags that extend lower and wrap around the mufflers for a slammed look.
- Turbine Wheels — 19-inch front and 18-inch rear gloss black aluminum wheels (Standard Road King uses 17/16-inch).
- Windshield Delete — The Special model ships without the quick-detach windshield found on the standard FLHR.
Key Specifications
| Engine |
Milwaukee-Eight 107 V-Twin Bore x Stroke: 3.937 in x 4.375 in; 4 valves per cylinder |
| Displacement | 1746cc (107ci) |
| Fuel System | Electronic Sequential Port Fuel Injection (ESPFI) |
| Cooling | Air/Oil cooled |
| Transmission |
6-Speed Cruise Drive Hydraulic clutch actuation |
| Drivetrain | Belt drive |
| Front Suspension | 49mm Dual Bending Valve (DBV) telescopic forks |
| Rear Suspension |
Low-profile hand-adjustable emulsion shocks Tool-free preload adjustment via hand knob |
| Front Brakes | Dual 320mm floating rotors with 4-piston fixed calipers |
| Rear Brakes | Single 320mm fixed rotor with 4-piston fixed caliper |
| Front Tire | 130/60B19 61H |
| Rear Tire | 180/55B18 80H |
| Weight | 820 lbs (Running Order) |
| Seat Height | 26.4 in (Laden) |
| Fuel Capacity | 6.0 gal |
Ownership at a Glance
What to know about maintaining a 2018 Harley-Davidson FLHRXS Road King Special
Known Issues 3
Top reported problems from owners and mechanics
High
Oil Sumping
Oil accumulates in the crankcase rather than returning to the tank, causing power loss, overheating, and potential engine seizure.
High
Hydraulic Clutch Actuator Failure
The internal seal of the clutch secondary actuator can leak, causing the clutch to lose pressure and fail to disengage.
Medium
Transmission Fluid Migration
Transmission oil 'transfers' through the mainshaft into the primary case, overfilling the primary and starving the transmission.
Parts Most Owners Need
Performance Upgrades 284
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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 171
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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 638
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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 2018 Harley-Davidson FLHRXS Road King Special
The 2018 model features a hydraulic clutch. Harley-Davidson did not switch back to cable-actuated clutches for the touring line until 2021.
The Special features blacked-out finishes, 9-inch mini-ape bars, stretched saddlebags, larger Turbine wheels (19" front/18" rear), and lacks the standard windshield and passing lamps found on the base model.
Yes, Reflex Linked Brembo Brakes with ABS were standard equipment on the 2018 Special trim.
A standard oil and filter change requires approximately 4.5 to 5.0 quarts of oil, though the total system capacity is 5.2 quarts.
Sumping is a condition where oil builds up in the engine's crankcase instead of being scavenged back to the oil tank, leading to friction, heat, and power loss. It is a known issue for 2017-2019 M8 engines.
Yes, the H-D Smart Security System with a proximity-based hands-free security fob was standard on the 2018 Special.
Yes, the front end retains the docking points for Harley's quick-detach windshields, though you may need to ensure the black hardware matches the bike's aesthetic.
The laden seat height (with a 180lb rider) is approximately 26.4 inches, making it very accessible for shorter riders.
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