Harley-Davidson Fat Boy vs Triumph Rocket 3

Last Updated: August 7, 2026

Triumph Rocket 3 price starts at Rs. 24.03 Lakh, which is Rs. 4.00 Lakh cheaper than the base variant of Harley-Davidson Fat Boy, priced at Rs. 28.03 Lakh. In terms of mileage, the Fat Boy offers a claimed 18.18 kmpl, while the Rocket 3 delivers 15.15 kmpl. On the performance front, the Fat Boy uses a 1923cc engine producing 104.69 PS @ 5020 rpm and the Rocket 3 a 2458cc engine producing 182 PS @ 7000 rpm. If you're deciding between the Fat Boy and Rocket 3, the Fat Boy is the better pick for mileage and a lighter kerb weight, while the Rocket 3 stands out for affordability and performance.

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Fat Boy vs Rocket 3 Comparison Summary

Specification Harley-Davidson Fat BoyTriumph Rocket 3
Ex-showroom price (base) Rs. 28.03 LakhRs. 24.03 Lakh
Mileage 18.18 kmpl15.15 kmpl
Engine 1923 cc2458 cc
Max power 104.69 PS @ 5020 rpm182 PS @ 7000 rpm
Kerb weight 315 Kg320 Kg

Fat Boy vs Rocket 3 Key Highlights

Basic Info Harley-Davidson Fat Boy STDTriumph Rocket 3 R
Rating
1 review
9 reviews
Brand Name Harley-Davidson Triumph
Ex-Showroom Price Rs. 28.03 Lakh Check On Road Price Rs. 24.03 Lakh Check On Road Price
Engine Type Milwaukee-Eight™ 117 Custom Liquid-cooled, 12 valve, DOHC, inline 3-cylinder
Max Power 104.69 PS @ 5020 rpm 182 PS @ 7000 rpm
Fuel Type Petrol Petrol
Colors
Harley Davidson Fat Boy Colors
Triumph Rocket 3 Colors
Wheel Size Front :-457.2 mm,Rear :-457.2 mm Front :-431.8 mm,Rear :-406.4 mm
Wheels Type (Pressed Steel/ Alloy) Cast Aluminum Alloy
ABS Dual Channel Dual Channel
Starting Self Start Only Self Start Only
Speedometer Analogue Digital
EMI
Rs. 76,745 @ 6% (36 months)
Rs. 65,796 @ 6% (36 months)
Insurance Rs. 58,686 Fat Boy Insurance Rs. 52,858 Rocket 3 Insurance
Brochure N/A N/A

Valves (per cylinder)
4
4
Claimed Top Speed
177 kmph
220 kmph
Emission Norm Compliance
bs6.2
bs6.2
Engine Type
Milwaukee-Eight™ 117 Custom
Liquid-cooled, 12 valve, DOHC, inline 3-cylinder
Engine Displacement
1923 cc
2458 cc
Gear Box
6 Speed
6 Speed
Max Power
104.69 PS @ 5020 rpm
182 PS @ 7000 rpm
Max Torque
168 Nm @ 3000 rpm
225 Nm @ 4000 rpm
Bore
103.5 mm
110.2 mm
Stroke
114.3 mm
85.9 mm
Number Of Cylinders
2
3
Drive Type
Chain Drive
Shaft Drive
Fuel System
Fuel Injection
Fuel Injection
Fuel Type
Petrol
Petrol
Compression Ratio
10.3:1
10.8:1

Front Brake
Disc
Double Disc
Rear Brake
Disc
Disc
Front Caliper
4 Piston
Not Available
Rear Caliper
4 Piston
Not Available

Mileage (Overall)
18.18 kmpl
15.15 kmpl
0-100 Kmph (sec)
Not Available
2.73s
Fuel Gauge
Digital
Digital

Suspension-Front
Dual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers
Showa 47mm USD 1 1 cartridge front forks, compression and rebound damping adjustment, 120mm wheel travel
Suspension-Rear
Hidden, free piston, coil-over monoshock; 43mm stroke; hydraulic preload adjustment
Fully adjustable Showa piggyback reservoir RSU with remote hydraulic preload adjuster, 107mm wheel travel

Tyre Size
Front :-160/60-R18, Rear :-240/40-R18
Front :-150/80-R17, Rear :-240/50-R16
Wheel Size
Front :-457.2 mm,Rear :-457.2 mm
Front :-431.8 mm,Rear :-406.4 mm
Tyre Make
Michelin
Not Available
Tyre Type
Tubeless
Tubeless
Radial Tyre
Yes
Not Available
Wheels Type (Pressed Steel/ Alloy)
Cast Aluminum
Alloy

Dry Weight
304 kg
Not Available
Seat height
675 mm
750 mm
Engine Oil Capacity
4.7 L
Not Available
Wheelbase
1650 mm
1677 mm
Length
2365 mm
Not Available
Ground Clearance
125 mm
Not Available
Height
Not Available
1183 mm
Width
965 mm
920 mm
Fuel Tank Capacity
18.9 L
18 L
Kerb Weight
315 Kg
320 Kg
Tail Light
LED
LED
Front Brake Size
Not Available
320 mm
Rear Brake Size
Not Available
300 mm

USB charging port
Yes
Not Available
Headlight
LED
LED
Projector head light
Not Available
Yes

Cruise Control
Yes
Yes
Frame Type
Stiffer Frame
Full aluminium frame
Trip Meter
Digital
Digital
Navigation assist
Not Available
Yes
Riding Modes
Yes
Rain,Road,Configurable Rider,Sports
Traction Control
Yes
Yes
Kill Switch
Yes
Yes
Low battery alert
Yes
Not Available
Rear Footpegs
Yes
Yes
Additional Features/Information
Drag-Torque Slip Control System, Hand Controls, Tyre Pressure Monitoring System, Cornering Enhanced Anti-lock Brake System, Cornering Enhanced Traction Control System, Cornering Drag-Torque Slip Control System
Not Available
Gear Position Indicator
Yes
Not Available
ABS Type
Dual Channel
Dual Channel
Side Stand Warning
Yes
Not Available
ABS
Dual Channel
Dual Channel
Body Type
Cruiser Bikes
Cruiser Bikes, Roadster Bikes
Instrument Console Type
Analogue and Digital
Digital
Bluetooth Connectivity
Not Available
Bluetooth
Starting
Self Start Only
Self Start Only
Seat Type
Split
Split
Pass Beam Switch
Yes
Yes
Speedometer
Analogue
Digital
Tachometer
Digital
Digital
Low Fuel Warning Lamp
Yes
Yes
Clock
Yes
Yes
Low Battery Indicator
Yes
Not Available
Low Oil Indicator
Yes
Yes
Passenger Backrest
Not Available
Yes
Cooling System
Air Cooled
Liquid Cooled
Odometer
Digital
Digital
Navigation
Not Available
Yes
Service Due Indicator
Not Available
Yes
Switchable ABS
Yes
Not Available

Air Filter Service Cost
Not Available
No
Spark Plug Service Cost
Not Available
No
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Recently Asked User Questions

Q. What is the size difference between Fat Boy and Rocket 3?
  • Wheelbase, Length, Width, Height, Ground Clearance and seat height of Triumph Rocket 3 are 1665 mm, 2500 mm, 886 mm, 1066 mm, 140 mm, and 750 mm respectively. On the other hand, the dimensions of Harley Davidson Fat Boy are 1665 mm, 2370 mm, ~990 mm, ~1,095 mm, 115 mm, and 670 mm respectively.
Q. What is the difference in Triumph Rocket 3 R and Triumph Rocket 3 GT?
  • The triumph 3r is a street oriented roadster while as 3gt is the cruiser variant
  • Triumph Rocket 3 is available in two different variants: Rocket 3 R and Rocket 3 GT. While the Rocket 3 R is the base bike, the GT variant is essentially a touring friendly take on the regular model. It features a cushioned backrest which is height adjustable, easy-reach handlebars, taller windscreen and wheels with slightly more premium dual-tone finish, and two exclusive colour schemes as well. The GT variant also gets heated grips with two heating modes as standard, larger 19-litre fuel tank (the R variant gets an 18-litre unit) and forward-set footpegs for more laidback ergonomics.
Q. Its compare maintenance cost between Triumph Rocket 3 R and Harley Davidson Fat Boy
  • I’m trading my 2019 Fat Boy for a 2022 R3 GT 221. Dealer service for the FB was $480.00/5k miles. Save money by doing 90% or the service yourself.
|Harley-Davidson Fat Boy Community

Harley Davidson Fat Boy Vs Triumph Rocket 3 FAQs

Which bike is cheaper Harley Davidson Fat Boy vs Triumph Rocket 3?
The Triumph Rocket 3 is cheaper than Harley-Davidson Fat Boy by ₹4.00 Lakh.
Which bike offers better performance Harley Davidson Fat Boy vs Triumph Rocket 3?
For the STD version, 1923 cc Petrol engine of Fat Boy produces 104.69 PS @ 5020 rpm of power and 168 Nm @ 3000 rpm of torque. Whereas for the R version, 2458 cc Petrol engine of Rocket 3 produces 182 PS @ 7000 rpm of power and 225 Nm @ 4000 rpm of torque

Images of Harley-Davidson Fat Boy and Triumph Rocket 3

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