2017 Harley-Davidson FLHX Street Glide — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2017 Harley-Davidson FLHX Street Glide running reliably.
Oil Change
Requires 4.5 quarts of 20W-50 oil with filter. The M8 engine is sensitive to overfilling, which can cause oil carryover into the air cleaner.
Primary & Transmission Fluid
Primary takes ~34-38 oz (wet); Transmission takes ~28 oz. Use dedicated fluids or 20W-50 synthetic.
Spark Plugs
The M8 uses 4 spark plugs (2 per cylinder). Replacement interval is every 30,000 miles or 2 years.
Common Wear Items
Parts that wear over time on the 2017 Harley-Davidson FLHX Street Glide and should be inspected regularly.
Brake Pads
Heavy touring weight leads to frequent front pad wear; Brembo calipers require specific pad shapes.
Tires
Rear tires (Dunlop Multi-Tread) typically last 10k-15k miles depending on load and riding style.
Battery
Standard 30Ah AGM battery (YTX30L-BS). High compression M8 requires strong CCA (385+) for reliable starting.
Popular Upgrades
The most popular aftermarket upgrades for the 2017 Harley-Davidson FLHX Street Glide.
Stage 1 Performance
High-flow intake, exhaust, and a tuner (Screamin' Eagle or aftermarket) to improve throttle response and sound.
Rear Suspension
Upgrading to 13-inch shocks (e.g., Ohlins, Legend, or Pro-Action) solves the 'bottoming out' issue caused by the stock 2.1-inch travel.
LED Lighting
The stock halogen headlight is often replaced with a Daymaker LED for significantly better night visibility.
Used Buying Inspection Checklist
What to look for when buying a used 2017 Harley-Davidson FLHX Street Glide.
Transmission Oil Level
Check for 'fluid transfer' where oil migrates from the transmission to the primary case.
Crankcase Sumping
On a test ride, check for sudden power loss or excessive heat, which indicates oil building up in the crankcase.
Hydraulic Clutch Actuator
Verify if the 2018 recall (18V-734) was performed; failing actuators lead to loss of clutch pressure.
Oil Cooler Line Clamps
Early 2017 models had a recall (17V-333) for improperly installed oil line clamps that could detach.
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