2021 Triumph Bonneville Speedmaster vs 2025 Harley-Davidson Softail Fat Boy 117

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles
2021 Triumph Bonneville Speedmaster 2021 Triumph Bonneville Speedmaster

Custom / cruiser

Engine
Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder
Power
57.5 kW / 76.9 hp @ 6100 rpm
Top Speed
N/A
Weight
263 kg / 580 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
Year20212025
Make ModelTriumph Bonneville SpeedmasterHarley Davidson Softail Fat Boy 117
Dimensions
Seat Height705 mm / 27.8 inUnladen 675 mm / 26.6 in Laden 658 mm / 25.9 in
Wheelbase1500 mm / 59.1 in1650 mm / 65 in
Ground Clearance-125 mm / 4.9 in
Height1055 mm /41.5 in1120 mm / 44.1 in
Length2225 mm / 87.6 in2365 mm / 93.1 in
Width910 mm / 35.8 in965 mm / 40.0 in
Weights & Capacities
Wet Weight (kg)263 315
Dry Weight (kg)-303
Dry Weight-303 kg / 668 lbs
Fuel Capacity12 Litres / 3.2 US gal18.9 Litres / US 5.0 gal
Wet Weight263 kg / 580 lbs315 kg / 694 lbs
Performance
Max Power57.5 kW / 76.9 hp @ 6100 rpm77 kW / 104Hp @ 4800 rpm
Max Torque106 Nm / 78.2 lb-ft @ 4000 rpm171 Nm / 126 lb-ft @ 3000 rpm
Engine
Displacement1198 cc / 73.1 cu in1923 cc / 117 cu in
Engine DetailFour stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinderFour stroke, V-Twin, 2 Milwaukee-Eight 117 custom, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Bore x Stroke97.6 x 80 mm103.5 x 114.3 in
Compression Ratio10.0:110.3:1
Cooling SystemLiquid cooledAir cooled
EmissionsEURO5-
ExhaustChromed stainless steel 2 into 2 twin-skin exhaust system with chromed stainless silencers2-into-2 staggered, catalyst in muffler
Fuel InductionMultipoint sequential electronic fuel injectionElectronic Sequential Port Fuel Injection (ESPFI)
IgnitionDigitalSingle-fire, non-wasted, map-controlled spark ignition
LubricationWet sumpPressurized, dry-sump with oil cooler
Starter-Electric
Drivetrain
ClutchWet, multi-plate, torque assist clutchMechanical, 10 plate wet, assist & conventional
Final DriveChainBelt, 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-Speed6 Speed
Chassis
Frame TypeTubular steel, twin cradle frameMild steel, tubular frame, rectangular section backbone, stamped, cast, and forged junctions, MIG welded, aluminum forged fender supports
Suspension - Front47 mm Showa cartridge forksDual bending valve 49mm telescopic with aluminum fork triple clamps, dual rate spring, "beer can" covers
Suspension - RearMono-shock RSU with linkage and preload adjustmentHidden, free piston, coil-over monoshock, 43mm stroke, hydraulic preload adjustment
Lean Angle-25.6°
Rake25.3°30°
SwingarmTwin sided fabricationMild steel, tubular sections, stamped x-member, forged axle junctions, MIG welded, removable belt spacer
Trail91.4 mm / 3.6 in104 mm / 4.1 in
Wheel Travel - Front-130 mm / 5.1 in
Wheel Travel - Rear-86 mm / 3.4 in
Wheels & Brakes
Brakes - Front2 x 310mm disc, Brembo 2-piston sliding axial calipers2 x 300mm discs, 4 piston fixed caliper
Brakes - RearSingle 255mm disc, Nissin single piston sliding axial caliperSingle 292mm disc, 2 piston floating caliper
ABSStandardStandard
Tyres - Front130/90-16160/60R18,70V,BW
Tyres - Rear150/80-16240/40R18,79V,BW
Wheels-Machined, Lakester cast aluminum
Wheels - FrontWire 32-spoke, 16 x 2.5 in18 x 4,5 in
Wheels - RearWire 32-spoke, 16 x 3.5 in18 x 8.0 in