Harley-Davidson Softail Slim - 2015 Specifications and Reviews

The 2015 Harley-Davidson Softail Slim is a lightweight cruiser that delivers classic styling with modern performance, powered by a 77.78 HP Evolution engine. Its low 25.6-inch seat height and nimble handling make it ideal for riders seeking an accessible yet authentic Harley experience. Known for its stripped-down, minimalist aesthetic and heritage appeal, the Slim balances vintage charm with contemporary conveniences like electronic fuel injection and advanced instrumentation.

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General information

CategoryCustom / cruiser
Year2015
ModelHarley-Davidson Softail Slim

Engine and Transmission Specifications

Exhaust systemChrome, over/under shotgun exhaust with slash-cut mufflers
Greenhouse gases129.9 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption5.60 litres/100 km (17.9 km/l or 42.00 mpg)
DrivelineChain 34/46 ratio primary drive
ClutchMulti-plate with diaphragm spring in oil bath
Transmission type,final driveBelt
Gearbox6-speed
Cooling systemAir
Fuel systemInjection. Electronic Sequential Port Fuel Injection (ESPFI)
Bore x Stroke98.4 x 111.3 mm (3.9 x 4.4 inches)
Compression9.6:1
Torque132.00 Nm (13.5 kgf-m or 97.4 ft.lbs) @ 3000 RPM
Power77.78 HP (56.8 kW) @ 5250 RPM
Engine detailsAir-cooled, Twin Cam 103B™
Engine typeV2, four-stroke
 
 

Brakes, suspension, Frame and wheels

WheelsBlack, Laced Steel
Rear brakesSingle disc. 2-piston
Front brakesSingle disc. ABS. 4-piston
Rear tyreMU85-B16
Front tyreMT90-B16
Trail147 mm (5.8 inches)
Rake (fork angle)31.0°

Physical measures and capacities

Oil capacity3.30 litres (0.22 quarts)
Fuel capacity18.93 litres (5.00 gallons)
Wheelbase1,636 mm (64.4 inches)
Ground clearance114 mm (4.5 inches)
Overall length2,350 mm (92.5 inches)
Seat height650 mm (25.6 inches) If adjustable, lowest setting.
Power/weight ratio0.2556 HP/kg
Weight incl. oil, gas, etc317.5 kg (700.0 pounds)
Dry weight304.4 kg (671.0 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
LightHigh beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings
InstrumentsTank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, RPM/gear display, low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed indicator light
StarterElectric
Color optionsAmber Whiskey/Vivid Black, Charcoal Satin/Vivid Black Satin, Radioactive Green, Superios Blue, Charcoal Satin, Sand Cammo Denim, Vivid Black.

Performance Profile & Rider Fit

86 hp
Peak Power
5.2s
0-60 mph

Best For

Track10%
City45%
Cornering30%
Daily Riding55%
Touring55%
Passenger45%

Rider Profile

Best ForSuits riders from newer intermediate to experienced who want a classic heavyweight cruiser rather than a beginner's first bike.
PurposeBuilt for laid-back boulevard cruising and stylish weekend rides rather than outright performance.
Rider FitLow 648mm seat height makes it approachable for shorter riders, but nearly 305kg wet weight demands confident low-speed handling and strength when maneuvering it off the kickstand or in tight parking.
CharacterA stripped-down, minimalist Softail with bobber styling, deep torque from the Milwaukee-Eight V-twin, and relaxed, low-slung ergonomics that reward smooth, unhurried riding.
Not Ideal ForNot for riders seeking sharp cornering agility, off-road capability, or a light, flickable machine for tight technical roads.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2015 Harley-Davidson Softail Slim Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 650mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2015 Harley-Davidson Softail Slim, with a cramped knee angle of around 70 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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