2011 Triumph Rocket III Touring vs 2012 Harley-Davidson FLSTF Fat Boy

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles

Differences only

2011 Triumph Rocket III Touring

Custom / cruiser

Engine

Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder

Power

77.3 kW / 105.9 hp @ 5400 rpm

Top Speed

N/A

Weight

395 kg / 869 lbs

2012 Harley-Davidson FLSTF Fat Boy

Custom / cruiser

Engine

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

Power

N/A

Top Speed

N/A

Weight

329 kg / 725 lbs

Full Specifications

Differs Same

General
Year	2010 - 11	2012
Make Model	Triumph Rocket III Touring	Harley Davidson FLSTF Fat Boy
Dimensions
Seat Height	730 mm / 28.7 in	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in
Wheelbase	1705 mm / 67.2 in	1635 mm / 64.2 in
Height	1182 / 46.5 in (excluded quick release screen & mirrors)	-
Length	995 mm / 39.1 in (including levers (widest fixed part)	2396 mm / 94.3 in
Width	995 mm / 39.1 in (including levers (widest fixed part)	-
Weights & Capacities
Fuel Capacity	22.3 Litres / 5.9 US gal / 4.9 Imp gal	18.9 Litres / 5.0 US gal
Maximum Load / GVWR	-	526.0 kg / 1160 lbs
Oil Capacity	-	3.3 Litres
Wet Weight	395 kg / 869 lbs	329 kg / 725 lbs
Performance
Max Power	77.3 kW / 105.9 hp @ 5400 rpm	-
Max Torque	203Nm / 200.7 kgf-m / 150 ft.lbs @ 2500 rpm	134 Nm / 13.7 kgf-m / 98.8 ft. lbs @ 3500 rpm
Engine
Displacement	2294 cc / 140 cu in	1690 cc / 103.1 cub in.
Engine Detail	Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler
Bore x Stroke	101.6 x 94.3 mm	98.4 x 111.1 mm
Compression Ratio	8.7:1	9.6:1
Cooling System	Liquid cooled	Air cooled
Exhaust	-	Chrome, over/under shotgun exhaust with dual mufflers
Fuel Induction	Multipoint sequential electronic fuel injection	Electronic Sequential Port Fuel Injection (ESPFI)
Ignition	Digital inductive type via electronic engine management	Single-fire, non-wasted, map-controlled spark ignition
Starter	Electric	Electric
Drivetrain
Clutch	Wet, multi-plate	-
Final Drive	Shaft	Belt
Gear Ratios	-	1st 9.311 / 2nd 6.454 / 3rd 4.793 / 4th 3.882 / 5th 3.307 / 6th 2.79
Transmission / Drive	5 Speed	6 Speed
Chassis
Frame Type	Tubular steel, twin spine	Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded
Suspension - Front	43mm Upside down forks	41.3 mm telescopic, chrome dust covers
Suspension - Rear	Chromed spring twin shocks with adjustable preload	Hidden, horizontal-mounted, coil-over shock
Rake	32°	31°
Trail	152 mm / 6.0 in	147 mm / 5.8 in
Wheel Travel - Front	120 mm / 4.7 in	-
Wheel Travel - Rear	105 mm / 4.1 in	-
Wheels & Brakes
Brakes - Front	2 x 320 mm Discs, 4 piston calipers	Single 292 mm disc, 4 piston caliper
Brakes - Rear	Single 316 mm disc, 2 piston caliper	Single 292 mm disc, 2 piston caliper
Tyres - Front	150/80 -R16	140/75R17 67V
Tyres - Rear	180/70 -R16	200/55R17 78V
Wheels	-	Optional Style Type Mirror Polished Chrome, Bullet Hole Disc Cast Aluminum (front and rear)
Wheels - Front	Alloy 25-spoke, 17 x 3.5in	Silver, Bullet Hole Disc Cast Aluminum
Wheels - Rear	Alloy 25-spoke, 16 x 7.5in	Silver, Bullet Hole Disc Cast Aluminum

Verdict

Winner on specs

2011 Triumph Rocket III Touring

The 2011 Triumph Rocket III Touring edges out the 2012 Harley-Davidson FLSTF Fat Boy thanks to its higher torque, liquid cooling, dual front discs and larger displacement. Specifications are one part of the picture - dealer support, parts availability, and intended use all matter too.

Key Differences

2011 Triumph Rocket III Touring - Advantages

Higher torque: 203Nm vs 134 Nm - more pulling power across the rev range.
Liquid cooling: Consistent engine temperature in stop-start traffic and hot climates.
Dual front discs: Greater stopping power and better heat management under hard braking.
Larger displacement: 2294 cc vs 1690 cc - more cubic capacity means broader torque delivery and greater low-end pull.

2012 Harley-Davidson FLSTF Fat Boy - Advantages

Lighter: 329 kg vs 395 kg - easier to handle and less fatiguing on long trips.
Lower seat height: Laden 635 mm vs 730 mm - accessible to a wider range of rider heights.

2011 Triumph Rocket III Touring vs 2012 Harley-Davidson FLSTF Fat Boy - FAQs

What are the engine differences between the 2011 Triumph Rocket III Touring and 2012 Harley-Davidson FLSTF Fat Boy?

The 2011 Triumph Rocket III Touring uses Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder, while the 2012 Harley-Davidson FLSTF Fat Boy is powered by Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler.

Which is lighter, the 2011 Triumph Rocket III Touring or the 2012 Harley-Davidson FLSTF Fat Boy?

The 2012 Harley-Davidson FLSTF Fat Boy is lighter at 329 kg compared to 395 kg for the 2011 Triumph Rocket III Touring - a difference of 66 kg. This is a meaningful difference that affects handling and rider fatigue.

Which bike is better for shorter riders, the 2011 Triumph Rocket III Touring or the 2012 Harley-Davidson FLSTF Fat Boy?

The 2012 Harley-Davidson FLSTF Fat Boy has the lower seat at Laden 635 mm, making it more accessible. The 2011 Triumph Rocket III Touring sits higher at 730 mm. A seat height below 800 mm suits most riders; above 820 mm shorter riders may need to tiptoe.

Which should I buy, the 2011 Triumph Rocket III Touring or the 2012 Harley-Davidson FLSTF Fat Boy?

Both are strong choices. The 2011 Triumph Rocket III Touring has the edge in higher torque and liquid cooling, while the 2012 Harley-Davidson FLSTF Fat Boy stands out for lighter kerb weight and lower seat height. Visit dealers, arrange test rides, and factor in local parts and service costs - these often matter as much as the spec sheet.

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