2013 Harley-Davidson FLTRX Road Glide Custom — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2013 Harley-Davidson FLTRX Road Glide Custom running reliably.
Oil Service
Requires '3-hole' service: Engine (20W-50), Primary (Formulated for wet clutch), and Transmission (80W-140 or H-D Formula+).
Air Suspension Adjustment
Rear shocks are air-adjustable; owners must use a dedicated low-volume hand pump to avoid blowing seals.
Common Wear Items
Parts that wear over time on the 2013 Harley-Davidson FLTRX Road Glide Custom and should be inspected regularly.
Tires
The heavy weight (800lb+) wears rear tires quickly; Dunlop Multi-Tread (MT) tires are recommended for longevity.
Brake Pads
Brembo calipers provide great stopping power but require frequent inspection of pad thickness due to the bike's mass.
Popular Upgrades
The most popular aftermarket upgrades for the 2013 Harley-Davidson FLTRX Road Glide Custom.
Stage 1 Kit
Combining a high-flow intake, tuner, and exhaust helps the engine run cooler and improves throttle response.
LED Headlights
The stock halogen dual headlights are often upgraded to 'Daymaker' LEDs for significantly better night visibility.
Common Replacement Parts
Parts that commonly need replacing on the 2013 Harley-Davidson FLTRX Road Glide Custom.
Compensator
The stock compensator is a known weak point, often causing a loud 'clunk' during startup or heavy vibration.
Lifters
Stock lifters in the 103 engine are prone to failure around 20k-30k miles; many owners replace them with high-quality aftermarket rollers.
Used Buying Inspection Checklist
What to look for when buying a used 2013 Harley-Davidson FLTRX Road Glide Custom.
Cold Start Sound
Listen for excessive ticking or knocking, which indicates worn lifters or cam chain tensioner issues.
Handlebar Wiring
If the bike has aftermarket 'Ape Hanger' bars, check throttle-by-wire functionality; sharp bends in internal wiring can cause intermittent failure.
Primary Case Leaks
Check the bottom of the primary and the inner primary seal for oil weeping, indicating gasket or seal failure.
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