2018 Harley-Davidson FLHXS Street Glide Special Parts & Accessories
Touring / Bagger
Milwaukee-Eight Touring
1,160 parts available
283 Performance
178 Maintenance
699 Accessories
2018 Harley-Davidson FLHXS Street Glide Special
About the 2018 Harley-Davidson FLHXS Street Glide Special
The 2018 Street Glide Special (FLHXS) marked a significant styling shift for Harley-Davidson, introducing the first factory 'blacked-out' finish for the Special trim. It is powered by the Milwaukee-Eight 107 V-Twin engine and features the modern 'hot rod bagger' aesthetic with stretched saddlebags and larger Talon wheels. This model year sits in the second year of the Milwaukee-Eight engine's production, benefiting from the new suspension platform introduced in 2017 while retaining the 107ci displacement before the 114ci upgrade in 2019.
What Makes This Trim Special
- Blacked-out Finishes — Engine covers, exhaust, front forks, handlebars, tank console, and mirrors are finished in gloss or satin black instead of chrome.
- Talon Wheels — Features blacked-out 19-inch front and 18-inch rear Talon cast aluminum wheels (Standard model uses 19/16-inch Enforcer wheels).
- Stretched Saddlebags — Factory-installed extended saddlebags that wrap around the mufflers for a lower profile.
- Infotainment System — Comes standard with the Boom! Box 6.5GT touchscreen with navigation (optional on the Standard model).
- Reflex Linked ABS & Security — Factory-installed ABS and Smart Security System are standard on the Special.
Likely but unverified:
- 115th Anniversary Edition — A limited-run version was available in Legend Blue/Vivid Black with serialized numbering and special badging.
Key Specifications
| Engine |
Milwaukee-Eight 107 V-Twin, 4 valves per cylinder Produces 111 ft-lb of torque at 3,250 rpm |
| Displacement | 1,746 cc (107 cu in); 100 mm x 111.1 mm bore x stroke |
| Fuel System | Electronic Sequential Port Fuel Injection (ESPFI) |
| Cooling | Air-cooled with integrated oil cooler |
| Transmission | 6-Speed Cruise Drive |
| Drivetrain | Belt final drive; Hydraulically actuated Assist & Slip clutch |
| Front Suspension | 49mm Dual Bending Valve (DBV) telescopic forks |
| Rear Suspension |
Premium low-profile hand-adjustable emulsion shocks Offers 15% more preload adjustment than previous air-adjustable shocks |
| Front Brakes | 32 mm 4-piston fixed calipers, dual floating rotors with ABS |
| Rear Brakes | 32 mm 4-piston fixed caliper, single rotor with ABS |
| Front Tire | 130/60B19 61H |
| Rear Tire |
180/55B18 80H The 18-inch rear wheel is specific to the Special trim for 2018 |
| Weight | 836 lbs (379 kg) in running order |
| Seat Height | 26.1 in (laden); 27.2 in (unladen) |
| Fuel Capacity | 6.0 gal (22.7 L) |
Ownership at a Glance
What to know about maintaining a 2018 Harley-Davidson FLHXS Street Glide Special
Known Issues 4
Top reported problems from owners and mechanics
High
Oil Sumping
Oil accumulates in the crankcase instead of returning to the tank, causing power loss, overheating, and potential engine failure.
High
Hydraulic Clutch Failure
The clutch master cylinder can leak internally, preventing the clutch from fully disengaging.
Medium
Transmission-to-Primary Fluid Migration
Transmission fluid moves into the primary case, leading to a low transmission level and overfilled primary.
Parts Most Owners Need
Performance Upgrades 283
Fits
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Moose Racing
All Balls Racing Fork Oil and Dust Seal Kits
$24.95 - $126.95
3 of 127 options fit
In Stock
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Maintenance Parts 178
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Moose Racing
All Balls Racing Wheel Bearing and Seal Kits
$24.95 - $84.95
4 of 197 options fit
In Stock
Fits
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Alloy Art
Alloy Art Mfg. Multi Rear Brake Caliper Mount
$797.95 - $850.95
4 of 4 options fit
In Stock
Fits
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Arlen Ness
Arlen Ness Big Sucker™ Stage I Air Filter Kits for M-Eight
$399.95 - $534.95
7 of 17 options fit
In Stock
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Accessories 699
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Frequently Asked Questions About the 2018 Harley-Davidson FLHXS Street Glide Special
The 2018 Street Glide Special came standard with the Milwaukee-Eight 107 engine. The 114ci engine was introduced to the Special trim in 2019.
The Special features blacked-out finishes, stretched saddlebags, 18-inch rear Talon wheels, the Boom! Box 6.5GT touchscreen, and standard ABS/Security.
The engine takes approximately 4.75 to 5.0 quarts of oil with a filter change. The transmission takes 1 quart, and the primary takes approximately 38-40 oz.
Sumping is a condition where the oil pump fails to scavenge oil from the crankcase, causing it to build up, create drag on the flywheel, and lead to overheating or engine damage.
Yes, it uses Harley-Davidson's Electronic Sequential Port Fuel Injection (ESPFI).
The 2018 model uses a hydraulic clutch. Note that this system was subject to a safety recall regarding the master cylinder.
It uses a YIX30L (or equivalent) 30Ah battery with at least 400 CCA.
The standard fix is installing a primary vent kit, which allows the primary case to breathe and prevents the vacuum that pulls oil from the transmission.
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