2015 Harley-Davidson Sportster Forty-Eight Specifications

Name: 2015 Harley-Davidson Sportster Forty-Eight
Brand: Harley-Davidson

Custom / cruiser • Specs last verified 13 July 2026

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2015 Harley-Davidson Sportster Forty-Eight Overview

The 2015 Harley-Davidson Sportster Forty-Eight is a custom / cruiser motorcycle. Under the tank sits a V2, four-stroke engine, a compression ratio of 9.7:1. The bore and stroke measures 88.9 x 96.8 mm. 2015 Harley-Davidson Sportster Forty-Eight delivers 96 Nm @ 5750 Revolutions of torque. From a practical standpoint, the 2015 Sportster Forty-Eight tips the scales at 259.9 kg, carries a 7.90-litre fuel tank, offers a seat height of 660 mm and spans a 1,519 mm wheelbase. That's roughly 40.7 kg lighter than the average custom / cruiser motorcycle in our database. Scroll down for the complete 2015 Harley-Davidson Sportster Forty-Eight spec sheet covering every technical detail from suspension travel to tyre sizes.

2015 Sportster Forty-Eight - Pros & Cons

Strengths

Fuel injection: The fuel injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Accessible seat height: At 660 mm, the seat height is approachable for a wide range of rider heights and builds confidence in low-speed manoeuvring.
Low-maintenance final drive: Belt final drive means no chain to clean, lube or adjust - meaningfully less routine maintenance than a chain-driven equivalent.

Considerations

Modest fuel capacity: The 7.90-litre tank means more frequent fuel stops on longer rides, which is worth planning around on touring routes.

Wear Points & Servicing Notes

Fuelling & injector care

Fuelling comes from fuel injection. Systems like this are largely maintenance-free beyond keeping fuel quality decent and injectors clear - a fuel-system cleaner every service interval is cheap insurance.

Brake disc and pad wear

The Single disc. Dual-piston. Optional ABS. front brake gives strong, progressive stopping power. Disc thickness and pad depth are worth checking at every tyre change, since worn pads can score the disc surface.

Final drive maintenance

Final drive is by belt - lower maintenance than chain with no lubrication needed, but tension and tooth wear should still be checked at service intervals.

Handling the weight at a standstill

At 259.9 kg, the Sportster Forty-Eight is a substantial machine - low-speed manoeuvring in car parks takes more physical effort than on a lighter bike, though the weight disappears once rolling.

Sportster Forty-Eight - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2015 Harley-Davidson Sportster Forty-Eight, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained Sportster Forty-Eight should fire up cleanly and settle to a smooth idle within a few seconds.

Oil and filter changes

Regular oil changes are the single most important maintenance task on any Sportster Forty-Eight. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. The sump holds 2.60 litres, so budget for that volume of quality motorcycle-specific engine oil. Always use the correct viscosity grade as specified in the owner's manual.

Fuel system care

The Sportster Forty-Eight's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.

2015 Harley-Davidson Sportster Forty-Eight - Frequently Asked Questions

What engine does the 2015 Harley-Davidson Sportster Forty-Eight have?

The 2015 Harley-Davidson Sportster Forty-Eight is powered by a V2, four-stroke engine.

How much does the 2015 Harley-Davidson Sportster Forty-Eight weigh?

The 2015 Harley-Davidson Sportster Forty-Eight weighs 259.9 kg. This is the manufacturer's wet figure.

How much power does the 2015 Harley-Davidson Sportster Forty-Eight make?

The 2015 Harley-Davidson Sportster Forty-Eight produces 96 Nm @ 5750 Revolutions of torque.

What is the fuel tank capacity of the 2015 Harley-Davidson Sportster Forty-Eight?

The 2015 Harley-Davidson Sportster Forty-Eight has a 7.90-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 131-158 km between stops.

Is the 2015 Harley-Davidson Sportster Forty-Eight suitable for shorter riders?

The 2015 Harley-Davidson Sportster Forty-Eight has a seat height of 660 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2015 Harley-Davidson Sportster Forty-Eight have?

The 2015 Harley-Davidson Sportster Forty-Eight uses Single disc. Dual-piston. Optional ABS. at the front and Single disc. Single-piston. Optional ABS. at the rear.

What tyre sizes does the 2015 Harley-Davidson Sportster Forty-Eight use?

The 2015 Harley-Davidson Sportster Forty-Eight runs 150/80-16 front and 150/80-B16 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

How much oil does the 2015 Harley-Davidson Sportster Forty-Eight take?

The 2015 Harley-Davidson Sportster Forty-Eight takes 2.60 litres of engine oil at a full oil and filter change. Always verify against the dipstick or sight glass after filling.

Harley-Davidson Sportster Forty-Eight Spec Evolution

The Harley-Davidson Sportster Forty-Eight was produced across 8 model years (2013-2020). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2013	2014	2015	2016	2017	2018	2019	2020
Wet Weight	259.9 kg / 573.0 lbs	259.9 kg / 573.0 lbs	259.9 kg / 573.0 lbs	257.0 kg / 566.6 lbs	252.0 kg / 555.6 lbs	252.0 kg / 555.6 lbs	252.0 kg / 555.6 lbs	252.0 kg / 555.6 lbs
Dry Weight	250.8 kg / 553.0 lbs	250.8 kg / 553.0 lbs	250.8 kg / 553.0 lbs	247 kg / 544.5 lbs	247 kg / 544.5 lbs	247 kg / 544.5 lbs	247 kg / 544.5 lbs	247 kg / 544.5 lbs
Engine Detail	Air-cooled, Evolution®	Air-cooled, Evolution®	Air-cooled, Evolution®	Evolution® engine	Evolution® engine	Evolution® engine	Evolution® engine	Evolution® engine
Seat Height	660 mm / 26.0 in.	660 mm / 26.0 in.	660 mm / 26.0 in.	710 mm / 28.0 in.	710 mm / 28.0 in.	710 mm / 28.0 in.	665 mm / 26.2 in.	665 mm / 26.2 in.
Fuel Capacity	7.95 litres / 2.10 gallons	7.95 litres / 2.10 gallons	7.90 litres / 2.09 gallons	7.90 litres / 2.09 gallons	7.90 litres / 2.09 gallons	7.90 litres / 2.09 gallons	7.90 litres / 2.09 US gallons	7.90 litres / 2.09 US gallons
Oil Capacity (Quarts)	0.17 quarts	0.17 quarts	0.17 quarts	0.17 quarts	0.17 quarts	0.17 quarts	2.75 US quarts	2.96 US quarts
Oil Capacity (l)	2.60 litres	2.60 litres	2.60 litres	2.60 litres	2.60 litres	2.60 litres	2.60 litres	2.80 litres
Ground Clearance (mm)	99 mm	99 mm	99 mm	110 mm	110 mm	110 mm	110 mm	110 mm

Key Specifications

Engine

V2, four-stroke

Power

Not published by manufacturer

Torque

96.00 Nm (9.8 kgf-m or 70.8 ft.lbs) @ 5750 Revolutions

Top Speed

Not published by manufacturer

Weight

259.9 kg / 573.0 lbs

Fuel Capacity

7.90 litres / 2.09 gallons

Full 2015 Harley-Davidson Sportster Forty-Eight Specifications

Colours Hard Candy Big Red Flake, Hard Candy Cancun Blue Flake, Vivid Black, Amber Whiskey, Charcoal Pearl

Ground Clearance (in.) 3.9 inches

Ground Clearance (mm) 99 mm

Seat Height 660 mm / 26.0 in.

Wheelbase 1,519 mm / 59.8 in.

Length 2,250 mm / 88.6 in.

Oil Capacity (l) 2.60 litres

Oil Capacity (Quarts) 0.17 quarts

Dry Weight 250.8 kg / 553.0 lbs

Fuel Capacity 7.90 litres / 2.09 gallons

Wet Weight 259.9 kg / 573.0 lbs

Max Torque 96.00 Nm (9.8 kgf-m or 70.8 ft.lbs) @ 5750 Revolutions

Power-to-Weight Ratio 0.2673 HP/kg

Bore x Stroke (in,) 3.5 x 3.8 inches

Bore x Stroke (mm) 88.9 x 96.8 mm

CO2 113.7 CO2 g/km. (CO2 - Carbon dioxide emission)

Engine Type V2, four-stroke

Engine Detail Air-cooled, Evolution®

Fuel System Injection. Electronic Sequential Port Fuel Injection (ESPFI)

Compression Ratio 9.7:1

Engine Lubrication Dry sump

Exhaust Chrome, staggered shorty exhaust with dual slash-cut mufflers

Fuel Consumption 4.90 litres/100 km (20.4 km/l or 48.00 mpg)

Starter Electric

Clutch Multi-plate with diaphragm spring in oil bath

Final Drive Belt

Gearbox 6-speed

Primary Drive 57/38 ratio

Trail 107 mm / 4.2 in.

Instrumentation 4-inch Speedometer mounted low and integrated into handlebar clamp electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, LED indicator lights

Lighting system High beam, neutral, low oil pressure, turn signals, engine diagnostics, low fuel warning, low battery, security system (optional)

Brakes - Front Single disc. Dual-piston. Optional ABS.

Brakes - Rear Single disc. Single-piston. Optional ABS.

Rims Black, Laced Steel

Tyres - Front 150/80-16

Tyres - Rear 150/80-B16

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.