2015 Harley-Davidson FLHTK Electra Glide Ultra Limited Parts & Accessories
Touring
Project RUSHMORE (2014-2016)
1,150 parts available
261 Performance
177 Maintenance
712 Accessories
2015 Harley-Davidson FLHTK Electra Glide Ultra Limited
About the 2015 Harley-Davidson FLHTK Electra Glide Ultra Limited
The 2015 FLHTK Electra Glide Ultra Limited is a premium long-haul touring motorcycle that represents the second year of the Project RUSHMORE enhancements. It features the Twin-Cooled High Output Twin Cam 103 engine, which utilizes liquid-cooled cylinder heads to manage heat and maintain performance. This model year is notable for the standard inclusion of the Boom! Box 6.5GT touchscreen infotainment system and Reflex Linked Brakes with ABS.
What Makes This Trim Special
- Twin-Cooled Engine — Uses liquid-cooled cylinder heads with radiators hidden in the fairing lowers; distinct from the air-cooled version found on the Ultra Classic.
- Boom! Box 6.5GT Infotainment — Standard 6.5-inch full-color touchscreen with GPS navigation and Bluetooth, whereas the Ultra Classic often came with the 4.3-inch non-touch screen.
- Heated Hand Grips — Standard factory-installed heated grips with 6 settings.
- Tour-Pak Luggage Rack — Standard chrome luggage rack mounted on top of the Tour-Pak.
- Contrast Chrome Impeller Wheels — 17-inch front and 16-inch rear cast aluminum wheels with a specific 'Impeller' design.
Key Specifications
| Engine |
Twin-Cooled™ High Output Twin Cam 103™ V-Twin Bore x Stroke: 3.875 in. x 4.374 in.; 10.1:1 compression ratio |
| Displacement | 103.1 cu in (1690cc) |
| Fuel System | Electronic Sequential Port Fuel Injection (ESPFI) |
| Cooling | Twin-Cooled (Air and Liquid-cooled heads) |
| Transmission | 6-Speed Cruise Drive® |
| Drivetrain | Belt drive, 2.875 final drive ratio |
| Front Suspension |
49mm telescopic forks Stiffer 49mm forks introduced with Project RUSHMORE |
| Rear Suspension | Air-adjustable monoshock |
| Front Brakes | 32mm 4-piston fixed front, Reflex™ Linked Brakes with ABS |
| Rear Brakes | 32mm 4-piston fixed rear |
| Front Tire | 130/80B17 65H |
| Rear Tire | 180/65B16 81H |
| Weight |
896 lbs (Running Order) Dry weight is approximately 861 lbs |
| Seat Height | 27.3 in (Laden) |
| Fuel Capacity | 6.0 gal |
Ownership at a Glance
What to know about maintaining a 2015 Harley-Davidson FLHTK Electra Glide Ultra Limited
Known Issues 4
Top reported problems from owners and mechanics
High
Water Pump Failure
The electric water pump for the Twin-Cooled system can fail prematurely, leading to overheating in slow traffic.
High
Hydraulic Clutch Malfunction
Gas bubbles can form in the clutch fluid, preventing the clutch from fully disengaging, especially after long storage.
Medium
Thermostat Housing Cracks
The plastic thermostat housing on early Twin-Cooled models was prone to cracking and leaking.
Parts Most Owners Need
Performance Upgrades 261
Fits
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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Arlen Ness
Arlen Ness Inverted, Method, Clear Tear and Sidekick Air Cleaner Replacement Components
$24.95 - $58.95
5 of 20 options fit
In Stock
Fits
Arlen Ness
Arlen Ness Method No Flex Inverted Fork Legs
$2,289.95 - $2,374.95
4 of 4 options fit
In Stock
Fits
Fits
Arlen Ness
Arlen Ness Monster Sucker and Velocity Air Cleaner Replacement Hardware Kit
$66.95
In Stock
Maintenance Parts 177
Fits
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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
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Arlen Ness
Arlen Ness Big Sucker Air Filter Kits for Twin Cam and XL
$314.95 - $364.95
5 of 20 options fit
In Stock
Fits
Arlen Ness Big Sucker™ Stage I Air Filter Kits with Cover for Twin Cam & XL
$414.95
4 of 14 options fit
In Stock
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Accessories 712
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Frequently Asked Questions About the 2015 Harley-Davidson FLHTK Electra Glide Ultra Limited
It is 'Twin-Cooled,' meaning the cylinder heads are liquid-cooled while the cylinders themselves remain air-cooled. This helps manage heat at the exhaust valves.
The Ultra Limited (FLHTK) has the Twin-Cooled engine, standard 6.5-inch touchscreen navigation, heated grips, and a Tour-Pak luggage rack, while the 2015 Ultra Classic (FLHTCU) is air-cooled and has fewer standard tech features.
No, the standard two-wheeled FLHTK does not have a reverse gear. Reverse is only standard on the Tri Glide Ultra trike models.
Harley-Davidson recommends 20W-50 motorcycle oil. You will need approximately 4 quarts for the engine, plus separate lubricants for the primary and transmission.
Updates are performed via a USB drive. You must download the latest firmware or map data from the Harley-Davidson SIP (Service Information Portal) website.
Recall 0165 addressed gas bubbles forming in the hydraulic clutch master cylinder, which could prevent the clutch from disengaging and cause the bike to creep forward.
With a 6-gallon tank and an average of 40-42 MPG, the theoretical range is approximately 240 miles, though most riders look for fuel around 200 miles.
This is a classic symptom of a failed electric water pump. The system defaults to running the fans at high speed to prevent the heads from overheating.
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