2015 Harley-Davidson FLTRX Road Glide — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2015 Harley-Davidson FLTRX Road Glide running reliably.
Oil Service
Requires a '3-hole' oil change: Engine (approx 4 qts), Primary (approx 38 oz), and Transmission (approx 32 oz).
Brake Fluid
DOT 4 fluid must be flushed every 2 years to prevent moisture buildup, especially critical for ABS-equipped models.
Common Wear Items
Parts that wear over time on the 2015 Harley-Davidson FLTRX Road Glide and should be inspected regularly.
Fairing Vent Mechanisms
The 'Triple Splitstream' vents can stick in the open or closed position due to road debris or spring failure.
Saddlebag Latches
One-Touch latches can become loose or misaligned, leading to rattling or difficulty locking.
Tires
Heavier touring bikes wear rear tires quickly; the Dunlop Multi-Tread is standard but often replaced with Michelin Commander III for longevity.
Popular Upgrades
The most popular aftermarket upgrades for the 2015 Harley-Davidson FLTRX Road Glide.
Handlebars
The stock reach was reduced by 5.5 inches for 2015, but many riders still upgrade to 12-14 inch 'Ape Hangers' for better ergonomics.
Vent Screens
The large open vents in the fairing allow bugs and debris to hit the rider; aftermarket mesh screens are a very common first upgrade.
Stage 1 Kit
Combining a high-flow air cleaner, exhaust, and tuner to reduce engine heat and improve throttle response.
Common Replacement Parts
Parts that commonly need replacing on the 2015 Harley-Davidson FLTRX Road Glide.
Battery
Standard YTX30L-BS AGM battery; high-compression 103 engines require strong CCA (Cold Cranking Amps) to avoid 'starter kickback'.
Brake Pads
Heavy weight leads to faster wear on the Brembo pads; many owners switch to Lyndall or EBC for reduced dust.
Used Buying Inspection Checklist
What to look for when buying a used 2015 Harley-Davidson FLTRX Road Glide.
Clutch Master Cylinder
Steering Head Bearings
Throttle-By-Wire (TBW) Codes
Primary Compensator
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