2012 Harley-Davidson FLSTN Softail Deluxe Specifications

Name: 2012 Harley-Davidson FLSTN Softail Deluxe
Brand: Harley-Davidson

Custom / cruiser • Specs last verified 13 July 2026

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2012 Harley-Davidson FLSTN Softail Deluxe Overview

The 2012 Harley-Davidson FLSTN Softail Deluxe is a custom / cruiser motorcycle built around 1690 cc of displacement. Under the tank sits a Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler engine, a compression ratio of 9.6:1. 2012 Harley-Davidson FLSTN Softail Deluxe delivers 132 Nm @ 3250 rpm of torque. From a practical standpoint, the 2012 FLSTN Softail Deluxe tips the scales at 329 kg, carries a 18.9-litre fuel tank, offers a seat height of Laden 622 mm and spans a 1635 mm wheelbase. That's roughly 28.4 kg heavier than the average custom / cruiser motorcycle in our database. Scroll down for the complete 2012 Harley-Davidson FLSTN Softail Deluxe spec sheet covering every technical detail from suspension travel to tyre sizes.

2012 FLSTN Softail Deluxe - Pros & Cons

Strengths

Fuel injection: The Electronic Sequential Port Fuel Injection (ESPFI) system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Accessible seat height: At Laden 622 mm, the seat height is approachable for a wide range of rider heights and builds confidence in low-speed manoeuvring.
Large fuel range: The 18.9-litre tank is generously sized, translating to extended range between stops - ideal for touring or longer commutes.
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

Age-related wear: As with any used FLSTN Softail Deluxe, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.

Wear Points & Servicing Notes

Heat management in traffic

FLSTN Softail Deluxe's air-cooled design means engine-bay temperatures build up more in stop-start traffic than on a liquid-cooled equivalent - a function of the cooling method itself, not a defect. Mesh riding gear and avoiding prolonged idling help in hot climates.

Fuelling & injector care

Fuelling comes from Electronic Sequential Port Fuel Injection (ESPFI). 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 292mm disc 4 piston caliper 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.

Suspension condition on used examples

Up front, the FLSTN Softail Deluxe runs 41.3 mm telescopic, chrome dust covers and Hidden, horizontal-mounted, coil-over shock at the rear. On a used example, check fork seals for weeping oil and test the rear linkage for play - seals are a relatively cheap fix but useful when negotiating price.

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.

Frame & chassis check

The frame is Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded - worth a visual check for corrosion or impact damage around the head-stock and swingarm pivot on any used example, since frame damage is far costlier to fix than any service item.

Handling the weight at a standstill

At 329 kg, the FLSTN Softail Deluxe 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.

FLSTN Softail Deluxe - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2012 Harley-Davidson FLSTN Softail Deluxe, 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 FLSTN Softail Deluxe 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 FLSTN Softail Deluxe. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

Fuel system care

The FLSTN Softail Deluxe'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.

2012 Harley-Davidson FLSTN Softail Deluxe - Frequently Asked Questions

What engine does the 2012 Harley-Davidson FLSTN Softail Deluxe have?

The 2012 Harley-Davidson FLSTN Softail Deluxe uses a Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler engine with 1690 cc of displacement. It is air cooled.

How much does the 2012 Harley-Davidson FLSTN Softail Deluxe weigh?

The 2012 Harley-Davidson FLSTN Softail Deluxe weighs 329 kg. This is the manufacturer's wet figure.

How much power does the 2012 Harley-Davidson FLSTN Softail Deluxe make?

The 2012 Harley-Davidson FLSTN Softail Deluxe produces 132 Nm @ 3250 rpm of torque.

What is the fuel tank capacity of the 2012 Harley-Davidson FLSTN Softail Deluxe?

The 2012 Harley-Davidson FLSTN Softail Deluxe has a 18.9-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 315-377 km between stops.

Is the 2012 Harley-Davidson FLSTN Softail Deluxe suitable for shorter riders?

The 2012 Harley-Davidson FLSTN Softail Deluxe has a seat height of Laden 622 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2012 Harley-Davidson FLSTN Softail Deluxe have?

The 2012 Harley-Davidson FLSTN Softail Deluxe uses Single 292mm disc 4 piston caliper at the front and Single 292mm disc 2 piston caliper at the rear.

What tyre sizes does the 2012 Harley-Davidson FLSTN Softail Deluxe use?

The 2012 Harley-Davidson FLSTN Softail Deluxe runs MT90-16 72H front and MU85B16 77H rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2012 Harley-Davidson FLSTN Softail Deluxe have?

The 2012 Harley-Davidson FLSTN Softail Deluxe is fitted with a 6 Speed transmission.

Harley-Davidson FLSTN Softail Deluxe Spec Evolution

The Harley-Davidson FLSTN Softail Deluxe was produced across 8 model years (2008-2017). 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	2008	2010	2011	2012	2013	2014	2015	2017
Wet Weight	329.0 kg / 726 lb	329.0 kg / 726 lb	329.0 kg / 726 lb	329.0 kg / 726 lbs	329.0 kg / 726 lbs	329.0 kg / 726 lbs	329.0 kg / 726 lbs	330 kg / 728 lbs
Dry Weight	315 kg / 693 lbs.	315 kg / 693 lbs.	315 kg / 693 lbs.	-	-	-	-	318 kg / 701 lbs
Engine Detail	Four stroke, 45° V-Twin, Twin Cam 96 vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder	Four stroke, 45° V-Twin, Twin Cam 96 vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder	Four stroke, 45° V-Twin, Twin Cam 96 vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder	Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler	Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler
Seat Height	Laden2 622 mm / 24.5 in. Unladen 673 mm / 26.5 in.	Laden2 622 mm / 24.5 in. Unladen 673 mm / 26.5 in.	Laden2 622 mm / 24.5 in. Unladen 673 mm / 26.5 in.	Laden 622 mm / 24.5 in Unladen 670 mm / 25.9 in	Laden 622 mm / 24.5 in Unladen 670 mm / 25.9 in	Laden 622 mm / 24.5 in Unladen 670 mm / 25.9 in	Laden 622 mm / 24.5 in Unladen 670 mm / 25.9 in	Unladen 622 mm / 24.5 in
Fuel Capacity	18.9 Litres / 5.0 gal	18.9 Litres / 5.0 gal	18.9 Litres / 5.0 gal	18.9 Litres / 5.0 US gal	18.9 Litres / 5.0 US gal	18.9 Litres / 5.0 US gal	18.9 Litres / US 5.0 gal	18.9 Litres / US 5.0 gal
Displacement	1584 cc / 96 cu-in	1584 cc / 96 cu-in	1584 cc / 96 cu-in	1690 cc / 103.1 cu-in	1690 cc / 103.1 cu-in	1690 cc / 103.1 cu-in	1690 cc / 103.1 cub in.	1690 cc / 103.1 cub in.
Wheelbase	1638 mm / 64.5 in	1638 mm / 64.5 in	1638 mm / 64.5 in	1635 mm / 64.2 in	1635 mm / 64.2 in	1635 mm / 64.2 in	1635 mm / 64.2 in	1635 mm / 64.2 in
Brakes - Front	Single 292mm disc 4 piston caliper	Single 292mm disc 4 piston caliper	Single 292mm disc 4 piston caliper	Single 292mm disc 4 piston caliper	Single 292mm disc 4 piston caliper	Single 292mm disc 4 piston caliper	Single 292 mm disc, 4 piston caliper	Single 292 mm disc, 4 piston caliper

Key Specifications

Engine

Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler

Power

Not published by manufacturer

Torque

132 Nm / 98.8 ft. lbs @ 3250 rpm

Top Speed

Not published by manufacturer

Weight

329.0 kg / 726 lbs

Fuel Capacity

18.9 Litres / 5.0 US gal

Full 2012 Harley-Davidson FLSTN Softail Deluxe Specifications

Year 2012

Make Model Harley Davidson FLSTN Softail Deluxe

Seat Height Laden 622 mm / 24.5 in Unladen 670 mm / 25.9 in

Wheelbase 1635 mm / 64.2 in

Ground Clearance 114 mm / 4.5 in

Length 2400 mm / 94.4 in

Fuel Capacity 18.9 Litres / 5.0 US gal

Maximum Load / GVWR 526.0 kg / 1160 lbs

Oil Capacity 3.3 Litres

Wet Weight 329.0 kg / 726 lbs

Max Torque 132 Nm / 98.8 ft. lbs @ 3250 rpm

Displacement 1690 cc / 103.1 cu-in

Engine Detail Four stroke, V-Twin, Twin Cam 103° Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder, with Integrated Oil-Cooler

Bore x Stroke 98.4 x 111.1 mm

Compression Ratio 9.6:1

Cooling System Air cooled

Fuel Induction Electronic Sequential Port Fuel Injection (ESPFI)

Ignition Single-fire, non-wasted, map-controlled spark ignition

Starter Electric

Clutch Multi-plate, wet

Final Drive Belt

Gear Ratios 1st 9.311 2nd 6.454 3rd 4.793 4th 3.882 5th 3.307 6th 2.79

Transmission / Drive 6 Speed

Frame Type Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded

Suspension - Front 41.3 mm telescopic, chrome dust covers

Suspension - Rear Hidden, horizontal-mounted, coil-over shock

Rake 32.1°

Trail 147 mm / 5.8 in

Brakes - Front Single 292mm disc 4 piston caliper

Brakes - Rear Single 292mm disc 2 piston caliper

Tyres - Front MT90-16 72H

Tyres - Rear MU85B16 77H

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