2017 Harley-Davidson FLHXS Street Glide Special — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2017 Harley-Davidson FLHXS Street Glide Special running reliably.
Engine Oil
The Milwaukee-Eight 107 requires approximately 5.2 quarts of 20W-50 oil with a filter change. Intervals are every 5,000 miles.
Primary & Transmission Fluid
Primary takes ~34-38 oz (wet); Transmission takes ~32 oz. Checking levels is critical due to potential fluid transfer issues.
Brake Fluid
Uses DOT 4 fluid. Harley-Davidson recommends a full system flush every 2 years to prevent ABS module failure due to moisture absorption.
Common Wear Items
Parts that wear over time on the 2017 Harley-Davidson FLHXS Street Glide Special and should be inspected regularly.
Tires
Heavy touring bikes wear rear tires quickly; the Dunlop D407T multi-tread is standard for longevity, but many owners switch to Michelin Commander III for better wet grip.
Brake Pads
The linked braking system can lead to faster rear pad wear as the system automatically applies rear pressure during front lever use.
Battery
The high-compression 107 engine and infotainment system demand a strong battery (YIX30L). Most last 3-4 years; a battery tender is highly recommended.
Popular Upgrades
The most popular aftermarket upgrades for the 2017 Harley-Davidson FLHXS Street Glide Special.
Stage 1 Kit
Combining high-flow air intake, slip-on mufflers, and a tuner (like Screamin' Eagle Street Tuner) improves throttle response and exhaust note.
Rear Suspension
The stock 2.1-inch travel shocks are a common complaint for 'bottoming out.' Upgrading to 13-inch shocks (Ohlins, Legend, or Pro-Action) significantly improves ride quality.
LED Lighting
While the Special has better trim, the 2017 often came with a halogen headlight; upgrading to a Daymaker LED is a top safety priority.
Common Replacement Parts
Parts that commonly need replacing on the 2017 Harley-Davidson FLHXS Street Glide Special.
Oil Pump
Early 2017 M8 engines often require an upgraded oil pump (2020+ version or S&S) to prevent sumping.
Clutch Actuator
Secondary clutch actuators were prone to leaking fluid internally, leading to a loss of clutch pressure; many were replaced under recall.
Used Buying Inspection Checklist
What to look for when buying a used 2017 Harley-Davidson FLHXS Street Glide Special.
Oil Sumping Signs
Check for excessive oil in the air cleaner or blue smoke on startup. Sumping causes power loss and engine overheating.
Fluid Transfer
Check the transmission dipstick and primary level. If the transmission is low and the primary is overfull, the bike has the 'transfer' issue (requires a primary vent fix).
Recall Status
Verify completion of the oil cooler line clamp recall (17V333000) and the clutch actuator recall (18V734000).
Infotainment Screen
Check for 'ghost touching' or delamination on the 6.5GT screen, which is a common failure point in high-heat or high-vibration environments.
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