2024 Triumph Rocket 3 GT vs 2025 Harley-Davidson Softail Fat Boy 117

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles
2024 Triumph Rocket 3 GT 2024 Triumph Rocket 3 GT

Custom / cruiser

Engine
Four stroke, inline 3-cylinder, DOHC
Power
134 kW / 180 hp @ 7000 rpm
Top Speed
N/A
Weight
320kg / 705 lbs
2025 Harley-Davidson Softail Fat Boy 117 2025 Harley-Davidson Softail Fat Boy 117

Custom / cruiser

Engine
Four stroke, V-Twin, 2 Milwaukee-Eight 117 custom, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Power
77 kW / 104Hp @ 4800 rpm
Top Speed
N/A
Weight
315 kg / 694 lbs
Full Specifications
General
Year20242025
Make ModelTriumph Rocket 3 GTHarley Davidson Softail Fat Boy 117
Dimensions
Seat Height750 mm / 29.5 inUnladen 675 mm / 26.6 in Laden 658 mm / 25.9 in
Wheelbase1677 mm / 66 in1650 mm / 65 in
Ground Clearance-125 mm / 4.9 in
Height1183 mm / 46.6 in (with mirrors1120 mm / 44.1 in
Length2365 mm / 93.1 in2365 mm / 93.1 in
Width920 mm / 36 in (with handlebars)965 mm / 40.0 in
Weights & Capacities
Dry Weight-303 kg / 668 lbs
Fuel Capacity18 Litres / 4.76 US gal18.9 Litres / US 5.0 gal
Wet Weight320kg / 705 lbs315 kg / 694 lbs
Performance
Max Power134 kW / 180 hp @ 7000 rpm 77 kW / 104Hp @ 4800 rpm
Max Torque225 Nm / 166 ft-lb @ 4000 rpm 171 Nm / 126 lb-ft @ 3000 rpm
Engine
Displacement2458 cc / 150 cu-in1923 cc / 117 cu in
Engine DetailFour stroke, inline 3-cylinder, DOHCFour stroke, V-Twin, 2 Milwaukee-Eight 117 custom, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Bore x Stroke110.2 x 85.9 mm103.5 x 114.3 in
Compression Ratio10.8:110.3:1
Cooling SystemLiquid cooledAir cooled
EmissionsEURO 5+-
ExhaustStainless 3-into-1 headers with 3 exit silencer / CAT box2-into-2 staggered, catalyst in muffler
Fuel InductionRide-by-Wire, fuel injectedElectronic Sequential Port Fuel Injection (ESPFI)
IgnitionDigital inductive type via electronic engine management Single-fire, non-wasted, map-controlled spark ignition
LubricationWet sumpPressurized, dry-sump with oil cooler
StarterElectricElectric
Drivetrain
ClutchWet, multi-plate hydraulically operated, torque assistMechanical, 10 plate wet, assist & conventional
Final DriveShaft, bevel boxBelt, 32/66 ratio
Gear Ratios-1st 9.311 / 2nd 6.454 / 3rd 4.793 / 4th 3.882 / 5th 3.307 / 6th 2.79
Primary Drive-Chain, 34/46 ratio
Transmission / Drive6 Speed 6 Speed
Chassis
Frame TypeFull aluminum frameMild steel, tubular frame, rectangular section backbone, stamped, cast, and forged junctions, MIG welded, aluminum forged fender supports
Suspension - FrontShowa 47mm upside-down 1+1 cartridge front forks, compression and rebound adjustementDual bending valve 49mm telescopic with aluminum fork triple clamps, dual rate spring, "beer can" covers
Suspension - RearFully adjustable Showa piggyback reservoir RSU with remote hydraulic preload adjustementHidden, free piston, coil-over monoshock, 43mm stroke, hydraulic preload adjustment
Lean Angle-25.6°
Rake27.9°30°
SwingarmSingle-sided, cast aluminumMild steel, tubular sections, stamped x-member, forged axle junctions, MIG welded, removable belt spacer
Trail134.9 mm / 5.3 in104 mm / 4.1 in
Wheel Travel - Front120 mm / 4.7 in130 mm / 5.1 in
Wheel Travel - Rear107 mm / 4.2 in86 mm / 3.4 in
Electrical Systems
InstrumentationTFT multi-functional instrument pack with digital speedometer, trip computer, digital tachometer, gear position indicator, fuel gauge, service indicator, ambient temperature, clock and rider modes (Rain/Road/Sport/Rider-configurable) Triumph TFT Connectivity System can be added with accessory fitted Bluetooth module-
Wheels & Brakes
Brakes - Front2x 320 mm discs with Brembo M4.30 Stylema 4-piston radial monobloc calipers2 x 300mm discs, 4 piston fixed caliper
Brakes - RearSingle 300mm disc, Brembo M4.32 4-piston monobloc caliperSingle 292mm disc, 2 piston floating caliper
ABSCornering ABSStandard
Tyres - Front150/80 R17 V160/60R18,70V,BW
Tyres - Rear240/50 R16 V240/40R18,79V,BW
Wheels-Machined, Lakester cast aluminum
Wheels - Front17 x 3.5 in cast aluminium18 x 4,5 in
Wheels - Rear16 x 7.5 in cast aluminium18 x 8.0 in

Verdict

Winner on specs

2024 Triumph Rocket 3 GT

The 2024 Triumph Rocket 3 GT edges out the 2025 Harley-Davidson Softail Fat Boy 117 thanks to its more peak power, higher torque, liquid cooling, higher rear wheel travel and larger displacement. Specifications are one part of the picture - dealer support, parts availability, and intended use all matter too.

Key Differences

2024 Triumph Rocket 3 GT - Advantages

  • More power: Produces 134 kW vs 77 kW - a meaningful performance advantage.
  • Higher torque: 225 Nm vs 171 Nm - more pulling power across the rev range.
  • Liquid cooling: Consistent engine temperature in stop-start traffic and hot climates.
  • Larger displacement: 2458 cc vs 1923 cc - more cubic capacity means broader torque delivery and greater low-end pull.
  • More rear wheel travel: 107 mm vs 86 mm - absorbs bigger hits and rough terrain better.

2025 Harley-Davidson Softail Fat Boy 117 - Advantages

  • Lower seat height: Unladen 675 mm vs 750 mm - accessible to a wider range of rider heights.
  • Dual front discs: Greater stopping power and better heat management under hard braking.
  • More front wheel travel: 130 mm vs 120 mm - greater compliance over rough surfaces.

2024 Triumph Rocket 3 GT vs 2025 Harley-Davidson Softail Fat Boy 117 - FAQs

What are the engine differences between the 2024 Triumph Rocket 3 GT and 2025 Harley-Davidson Softail Fat Boy 117?
The 2024 Triumph Rocket 3 GT uses Four stroke, inline 3-cylinder, DOHC, while the 2025 Harley-Davidson Softail Fat Boy 117 is powered by Four stroke, V-Twin, 2 Milwaukee-Eight 117 custom, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder.
Which has more power, the 2024 Triumph Rocket 3 GT or the 2025 Harley-Davidson Softail Fat Boy 117?
The 2024 Triumph Rocket 3 GT produces more peak power at 134 kW, compared to 77 kW for the 2025 Harley-Davidson Softail Fat Boy 117.
Which bike is better for shorter riders, the 2024 Triumph Rocket 3 GT or the 2025 Harley-Davidson Softail Fat Boy 117?
The 2025 Harley-Davidson Softail Fat Boy 117 has the lower seat at Unladen 675 mm, making it more accessible. The 2024 Triumph Rocket 3 GT sits higher at 750 mm. A seat height below 800 mm suits most riders; above 820 mm shorter riders may need to tiptoe.
Which should I buy, the 2024 Triumph Rocket 3 GT or the 2025 Harley-Davidson Softail Fat Boy 117?
Both are strong choices. The 2024 Triumph Rocket 3 GT has the edge in more peak power and higher torque, while the 2025 Harley-Davidson Softail Fat Boy 117 stands out for lower seat height and dual front discs. Visit dealers, arrange test rides, and factor in local parts and service costs - these often matter as much as the spec sheet.