🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHTK Electra Glide Ultra Limited

Year:

2015

Chassis Code:

FLHTK

Powertrain Code:

Twin Cam 103 High Output

👋 Introduction

Category:

Full-dresser Touring Motorcycle

Target Audience:

Long-distance touring riders, individuals seeking maximum comfort and features

Competitors:

Indian Roadmaster, Honda Gold Wing, BMW K1600 Grand America

Comfort And Ergonomics:

Adjustable rider backrest, passenger backrest, heated grips, heated seats, ample legroom

Storage:

Large capacity saddlebags, tour-pak with integrated passenger backrest, fairing lowers with storage compartments

Infotainment:

Boom! Box 6.5 GT infotainment system with GPS navigation, Bluetooth, USB integration

Performance:

Torque-rich Twin Cam 103 High Output engine, smooth power delivery for cruising

Touring Capability:

Wind protection from fairing, comfortable seating for rider and passenger, luggage capacity

Suspension:

Premium Ride Touring Suspension with adjustable rear air suspension

📋 Manual Details

Engine:

Yes

Transmission:

Yes

Electrical System:

Yes

Fuel System:

Yes

Brakes:

Yes

Suspension:

Yes

Bodywork:

Yes

Chassis:

Yes

Diagnostics:

Yes

Troubleshooting:

Yes

Maintenance Procedures:

Yes

Wiring Diagrams:

Yes

Estimated Pages:

1000+

Type:

Workshop Service Manual (WSM)

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Management:

EFI, ignition timing, sensor diagnostics

Powertrain:

Engine internal components, clutch, primary drive, transmission, final drive

Brake System:

Front and rear calipers, master cylinders, ABS (Antilock Braking System), brake fluid service

Suspension System:

Front forks (Show-through design), rear shock absorbers, air suspension adjustment

Fuel Delivery:

Fuel tank, fuel pump, fuel injectors, fuel filter replacement

Cooling System:

Air-cooled engine, oil cooling components

Exhaust System:

Mufflers, headpipes, heat shields, O2 sensor diagnostics

Electrical Components:

Battery, charging system (stator, regulator/rectifier), starter motor, lighting, ignition switches

Instrumentation:

Gauges, indicators, speedometer, tachometer, fuel gauge, information display

Comfort Features:

Fairing, batwing fairing, fairing lowers, saddlebags, tour-pak, rider and passenger seating

Infotainment System:

Boom! Box infotainment system, radio, navigation, Bluetooth connectivity, speakers

Security System:

Smart security system, key fob operation

Routine Maintenance:

Oil changes, filter replacements, spark plug replacement, air filter service, brake fluid flush

Engine Overhaul:

Piston ring replacement, valve adjustment, cylinder head removal and installation, crankshaft service

Transmission Repair:

Clutch inspection and replacement, transmission gear inspection, bearing replacement, seal replacement

Electrical Troubleshooting:

Diagnosis of electrical faults, charging system testing, starter system diagnostics, lighting circuit repair

Suspension Service:

Fork seal replacement, shock absorber adjustment and replacement, wheel bearing service

Brake System Maintenance:

Brake pad replacement, caliper service, bleeding the brake system, ABS component diagnostics

Body Panel Removal And Installation:

Fairing components, saddlebags, tour-pak, fenders, seat removal

Diagnostic Trouble Codes:

Listing and interpretation of DTCs, diagnostic procedures for common faults

Torque Specifications:

Detailed torque values for all critical fasteners

Special Tool Requirements:

Identification and usage of specialized tools for specific repairs

Depth:

Comprehensive

Scope:

Covers everything from basic maintenance to complete engine and transmission rebuilds

Diagnostic Capability:

Advanced diagnostic procedures and fault finding

📊 Manual Specifications

Format:

PDF

Searchability:

Searchable text content

Quality:

High-resolution images and diagrams

Binding:

N/A (Digital Download)

Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 103 High Output

Displacement:

1690 cc (103 cubic inches)

Bore X Stroke:

3.875 in x 4.375 in (98.4 mm x 111.3 mm)

Compression Ratio:

9.6:1

Valvetrain:

Pushrod-actuated, overhead valves with two valves per cylinder

Torque:

Approx. 104.7 ft-lbs @ 3,500 RPM (142 Nm @ 3,500 RPM)

Horsepower:

Not officially rated by Harley-Davidson, estimated to be in the 80-90 HP range

Induction:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium unleaded gasoline, minimum 91 octane recommended

Oil Capacity:

5.0 US qt (4.7 L)

Oil Type:

Harley-Davidson SYN3 Synthetic (or equivalent API SG, JASO FD/FE registered motorcycle oil)

🔧 Transmission

Type:

6-speed Cruise Drive

Gear Ratios:

1st: 9.593, 2nd: 6.650, 3rd: 4.938, 4th: 3.824, 5th: 3.232, 6th: 2.790

Clutch:

Hydraulically actuated, 10-plate, wet clutch

Final Drive:

Belt drive, 32/46 ratio

Transmission Oil:

Harley-Davidson Formula + (or equivalent SAE 50 motorcycle transmission oil)

Transmission Capacity:

2.7 US qt (2.6 L)

📐 Dimensions

Length:

103.1 in (2619 mm)

Width:

39.0 in (990 mm)

Height:

54.1 in (1375 mm)

Wheelbase:

64.5 in (1638 mm)

Ground Clearance:

5.1 in (130 mm)

Rake:

26°

Trail:

6.1 in (155 mm)

Dry Weight:

838 lbs (380 kg)

Wet Weight:

Approx. 899 lbs (408 kg) (fully fueled, without rider)

Gross Vehicle Weight Rating:

1360 lbs (617 kg)

Saddlebag Capacity:

Approx. 2.3 cu ft (65 L)

Tour Pak Capacity:

Approx. 2.7 cu ft (76 L)

Fuel Tank Capacity:

6.0 US gal (22.7 L)

Oil Capacity:

5.0 US qt (4.7 L)

🛡️ Safety Features

Crash Test Ratings:

Motorcycles are not subject to the same NHTSA crash test ratings as automobiles.

ABS:

Standard Reflex Linked with Integrated (RLI) Anti-lock Braking System (ABS)

Cruise Control:

Electronic cruise control

Lighting:

Dual Halogen headlights, LED tail/brake lights, auxiliary passing lamps

Chassis Design:

Steel frame and swingarm for stability and durability

Tire Pressure Monitoring:

Not standard on this model year

Wind Protection:

Full-coverage fairing and windshield

💡 Technology Features

System Name:

Boom! Box 6.5 GT Infotainment System

Display:

6.5-inch color touchscreen

Navigation:

Integrated GPS navigation with traffic information and route planning.

Audio:

AM/FM radio, weather band, SiriusXM satellite radio readiness, Jukebox media player (USB port), Bluetooth phone pairing and audio streaming.

Speakers:

Four premium speakers (two fairing, two lower fairing) with 75 watts of power.

Cruise Control:

Standard electronic cruise control for highway comfort.

ABS:

Standard Reflex Linked Brakes with ABS, enhancing braking stability and control.

Bluetooth:

Bluetooth connectivity for phone calls and audio streaming.

Usb Port:

USB port for charging and media playback.

Security:

Standard Harley-Davidson Smart Security System with immobilizer.

Lighting:

Daymaker LED headlight and fog lamps (optional on some trims, but standard on Ultra Limited), LED tail/brake lights.

🔧 Maintenance

First Service:

1,000 miles (1,600 km) or 1 month (whichever comes first) - typically includes oil change, primary chain tension adjustment, and general inspection.

Subsequent Oil Changes:

Every 5,000 miles (8,000 km) or 6 months (whichever comes first).

Spark Plug Replacement:

Every 10,000 miles (16,000 km) or as needed.

Drive Belt Inspection:

Every 5,000 miles (8,000 km) - check tension and condition.

Brake Fluid Flush:

Every 2 years, regardless of mileage.

Rear Shock Air Pressure:

Check and adjust as needed based on load and preference, refer to manual for specific pressure ranges.

Engine Oil:

Harley-Davidson SYN3 Synthetic or equivalent SAE 20W-50 motorcycle oil meeting API SG, JASO FD/FE.

Primary Chain Case Oil:

Harley-Davidson Formula + or equivalent SAE 50 motorcycle transmission oil.

Transmission Oil:

Harley-Davidson Formula + or equivalent SAE 50 motorcycle transmission oil.

Brake Fluid:

DOT 4 brake fluid.

Cam Chain Tensioner Wear:

Earlier Twin Cam models (pre-2007) were known for hydraulic cam chain tensioner wear. Later models (like the 2015 with the 103 HO) have improved tensioners, but inspection is still recommended at higher mileage.

Oil Cooler Leaks:

Occasional reports of leaks from oil cooler lines or fittings.

Infotainment System Glitches:

Some users report occasional minor glitches or connectivity issues with the Boom! Box system; software updates can often resolve these.

Clutch Lever Adjustment:

Hydraulic clutch might require occasional adjustment of the lever position for rider comfort.

📚 Vehicle History

Brand Origin:

Founded in Milwaukee, Wisconsin, USA, in 1903

Brand Philosophy:

Freedom, individuality, American craftsmanship, performance cruising

Electra Glide Lineage:

The Electra Glide name has been a cornerstone of Harley-Davidson's touring line since 1965, evolving from its original FLH designation.

Ultra Limited Introduction:

The Ultra Limited trim level was introduced to offer the highest level of comfort, features, and luxury for long-distance touring.

Twin Cam Era:

The 2015 model year is part of the Twin Cam engine era for Harley-Davidson touring motorcycles, preceding the Milwaukee-Eight engine.

Manufacturing Location:

Typically assembled in York, Pennsylvania, and/or Milwaukee, Wisconsin, USA.

Significant Updates For 2015:

While not a complete redesign, 2015 models often featured refinements in the infotainment system and chassis, building on previous years.

🏆 Awards & Recognition

Touring Motorcycle Awards:

While specific awards for the 2015 FLHTK are not commonly publicized, the Electra Glide Ultra Limited platform consistently receives high praise from motorcycle publications and riders for its comfort, features, and touring capability.

Consumer Satisfaction:

Harley-Davidson generally scores well in consumer satisfaction surveys for its touring models.

Emissions Standards:

Compliant with US EPA and California ARB emissions standards for the model year.