2019 Harley-Davidson FLHRXS Road King Special — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2019 Harley-Davidson FLHRXS Road King Special running reliably.
Engine Oil
Requires approximately 5.0 quarts of 20W-50 oil. Intervals are every 5,000 miles after the initial 1,000-mile break-in.
Primary & Transmission Fluids
Primary takes ~34 oz (wet) and Transmission takes ~28-32 oz. Primary is usually serviced every 10,000 miles; Transmission every 20,000 miles.
Spark Plugs
Uses four spark plugs (two per cylinder). Standard replacement interval is 30,000 miles.
Common Wear Items
Parts that wear over time on the 2019 Harley-Davidson FLHRXS Road King Special and should be inspected regularly.
Rear Brake Pads
Heavy touring bikes tend to wear rear pads faster, especially with linked braking systems. Check every 5,000 miles.
Tires
The 19-inch front tire has a lower profile than the standard model, making it slightly more susceptible to rim damage from large potholes.
Battery
Uses a high-CCA YIX30L style battery. Touring electronics and security systems can drain batteries if not kept on a tender during storage.
Popular Upgrades
The most popular aftermarket upgrades for the 2019 Harley-Davidson FLHRXS Road King Special.
Windshield
The Special does not come with a windshield standard. Most owners add a quick-detach Windsplitter or similar shield for highway comfort.
Rear Suspension
The 12-inch shocks have limited travel (approx. 2.1 inches). Upgrading to 13-inch aftermarket shocks (like Ohlins or Legend) significantly improves ride quality.
LED Lighting
While it has an LED headlight, the turn signals are often upgraded to LED inserts for better visibility and a cleaner look.
Common Replacement Parts
Parts that commonly need replacing on the 2019 Harley-Davidson FLHRXS Road King Special.
Oil Pump
Many owners of 2017-2019 M8 engines replace the stock oil pump with the 2020+ updated version or an S&S unit to prevent sumping.
Shift Linkage
The stock hollow-tube linkage is a known weak point that can snap; many owners upgrade to a solid stainless or billet version.
Used Buying Inspection Checklist
What to look for when buying a used 2019 Harley-Davidson FLHRXS Road King Special.
Sumping Check
Run the bike to operating temperature and check for significant power loss or oil carryover in the air cleaner, which indicates oil is pooling in the crankcase.
Fluid Migration
Check the primary fluid level; if it is overfull while the transmission is low, the oil is migrating through the pushrod tunnel.
Clutch Actuator Recall
Verify if Recall 0173 (Secondary Clutch Actuator) has been performed to prevent sudden loss of clutch pressure.
Stretched Bag Scrapes
Inspect the bottom leading edges of the saddlebags for scrapes, as the lowered suspension makes them prone to bottoming out on curbs or steep inclines.
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