Quick Analysis
Harley Davidson Fat Boy
21.5 pts
Unweighted: 11 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
Honda Dio 125 Smart
11.5 pts
Unweighted: 12 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | Air-cooled | Air Cooled |
| Displacement | 1,923 cc | 123.92 CC |
| Engine Type | Milwaukee-Eight™ 117 Custom | 4 Stroke, SI Engine, Fuel Injection |
| Power | 103 HP / 77 kW @ 5020 rpm | 10.5 Nm @5000 rpm |
| Torque | 168 Nm @ 3000 rpm | 6.11 kW @6500 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 18.9 litres | 5.3 L |
| Mileage | 18.18 Kmpl | 48 Kmpl |
Dimensions & Weight |
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| Kerb Weight | 315 | 105 |
| Seat Height | 675 | 708 |
Brakes & Suspension |
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| ABS | Dual-channel ABS | No |
| Front Brake | Disc | 190 mm Disc |
| Front Suspension | Dual-bending valve 49 mm telescopic with aluminum fork triple clamps, dual rate spring | Telescopic |
| Rear Brake | Disc | 130 mm Drum |
| Rear Suspension | Hidden, free piston, coil-over monoshock; 43mm stroke, hydraulic preload adjustment | 3-Step Adjustable Spring |
Tyres & Wheels |
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| Front Tyre | 160/60 R18 | 90/90-12 |
| Rear Tyre | 240/40 R18 | 90/100-10 |
| Tyre Type | Tubeless | Tubeless |
| Wheel Type | Cast aluminum (Lakester) | Alloy |
Features & Technology |
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| Headlight | LED | LED |
Other Specifications |
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| Battery | — | 12 V, 5.0 Ah |
| Bike Image 1 | https://motoautiv.com/wp-content/uploads/2025/06/Blue.avif | https://motoautiv.com/wp-content/uploads/2025/06/Gray-emblem.avif |
| Bike Image 2 | https://motoautiv.com/wp-content/uploads/2025/06/Grey.avif | https://motoautiv.com/wp-content/uploads/2025/06/gray-stripe.avif |
| Bike Image 3 | https://motoautiv.com/wp-content/uploads/2025/06/Whiskey-fire.avif | https://motoautiv.com/wp-content/uploads/2025/06/Igneous-black.avif |
| Bike Image 4 | — | https://motoautiv.com/wp-content/uploads/2025/06/Imperial-red.avif |
| Bike Image 5 | — | https://motoautiv.com/wp-content/uploads/2025/06/yellow.avif |
| Cluster | Analog with LCD | TFT |
| Color Options | Billiard Gray | #6B7074 Vivid Black | #0F0F10 Blue Burst | #1E4D8C Whiskey Fire / Vivid Black | #7A2D1B, #0F0F10 | Pearl Igneous Black | #121214 Imperial Red | #A51E28 Pearl Sports Yellow | #D9A400 Mat Marvel Blue Metallic | #2F4F7A Pearl Deep Ground Gray (Stripe) | #5B5E63 Pearl Deep Ground Gray (Emblem) | #60646A |
| Cons | The Weight Is Impossible to Ignore – Parking, reversing, or making tight U-turns requires more effort than on most motorcycles. The bike feels considerably lighter once moving, but the weight is always present at low speeds. Not a Motorcycle That Enjoys Tight Corners – The Fat Boy is happiest on flowing roads. When the road becomes tight and twisty, its size and geometry become more noticeable. Wind Hits You Directly at Highway Speeds – Without a fairing or windscreen, long highway rides can become tiring because the rider takes the full force of the wind. Can Feel Warm in Traffic – Sitting in slow-moving traffic on a hot day makes the large V-twin's heat more noticeable around the legs. Passenger Comfort Is Average – The stock setup feels more focused on the rider. For frequent two-up riding, many owners look at accessory seats and backrests. Not Built Around Practicality – There is no meaningful storage space, and carrying luggage usually requires additional accessories. Running Costs Are Higher Than Average – Tyres, servicing, insurance, and genuine accessories can all add up compared to smaller motorcycles. Requires Some Experience to Get the Best Out of It – The combination of weight, engine size, and physical dimensions can feel intimidating for riders who are new to large-capacity cruisers. Floorboards Touch Down Earlier Than You Might Expect – Riders who push harder through corners will eventually find the limits of the cruiser-style setup. | Performance Is Primarily City-Focused – While capable of highway use, the engine is tuned more for urban commuting than sustained high-speed riding. Underseat Storage Is Not the Largest in the Segment – Some competitors offer slightly more storage capacity for larger helmets and luggage. Ride Quality Can Feel Firm on Poor Roads – Sharp potholes and broken surfaces are transmitted more noticeably than on some scooters with softer suspension tuning. Rear Drum Brake on Lower Variants – Depending on the variant, buyers may not get a rear disc brake. Pillion Space Is Average – The rear seat is adequate for daily use but is not among the roomiest in the 125cc scooter category. Feature List Isn't the Most Extensive – While the Smart key system is useful, some rivals offer additional connected features, navigation integration, or larger displays. Smaller Wheels Than Some Rivals – The wheel setup prioritizes agility but may feel less composed on rough roads compared with scooters using larger wheels. |
| Detailed Overview | Even among Harley-Davidson’s own motorcycles, the Fat Boy has always been difficult to mistake for anything else. The solid-disc Lakester wheels, broad fuel tank, chunky tyres, and low stance give it a silhouette that looks substantial from every angle. While many cruisers rely on chrome and visual complexity to create an impression, the Fat Boy’s design is built around simple, oversized elements that have remained part of its identity for decades. The motorcycle is based on Harley-Davidson’s Softail platform, which uses a hidden rear suspension arrangement beneath the seat area. From the side, the frame still resembles the rigid hardtail cruisers that inspired it, but underneath there is a modern monoshock setup responsible for absorbing road imperfections. The front suspension uses telescopic forks designed to support the motorcycle’s considerable weight while maintaining stability over varying road surfaces. A 1,923cc Milwaukee-Eight 117 V-twin engine sits prominently in the center of the motorcycle. Rather than encouraging riders to explore the upper reaches of the rev range, the engine develops much of its performance lower down, which influences how the Fat Boy behaves in everyday riding. The motorcycle can accelerate with relatively little throttle input, and the six-speed gearbox allows the engine to remain relaxed during highway travel. The large displacement and V-twin configuration are also major contributors to the motorcycle’s mechanical character and riding feel. Dimensionally, the Fat Boy is a substantial machine. Wide tyres at both ends, a long wheelbase, and a low seat height all contribute to its proportions. The low seating position places the rider close to the ground, while forward-mounted foot controls create the stretched riding posture commonly associated with large American cruisers. Combined with the wide handlebar, the rider’s position is very different from what would be experienced on a roadster or sport motorcycle. The Lakester wheels remain one of the defining visual features of the Fat Boy. Unlike conventional alloy wheels, their solid-disc-inspired design creates a unique appearance that has become closely associated with the model over the years. Alongside the broad tyres and muscular bodywork, these wheels play a significant role in shaping the motorcycle’s overall identity. Technology is present, although it is integrated more discreetly than on Harley-Davidson’s touring motorcycles. Modern versions include selectable riding modes, traction control, and ABS, with certain markets also receiving cornering-sensitive rider-assistance systems. Instead of a large touchscreen display, the Fat Boy uses a compact instrument setup focused primarily on essential riding information. An 18.9-litre fuel tank sits above the engine and forms one of the largest visual elements of the motorcycle. Lighting throughout the motorcycle uses LED technology, while the overall design remains intentionally uncluttered. There are few body panels, minimal visual distractions, and a clear emphasis on exposing the mechanical components that define the motorcycle. The Fat Boy’s specifications reveal a motorcycle shaped around traditional cruiser principles: a large-capacity V-twin engine, long-wheelbase chassis, low seating position, and substantial physical presence. Although modern electronics and engineering have been incorporated over time, the underlying layout remains closely tied to the formula that has defined the model for decades. | The Honda Dio 125 Smart is positioned within the 125cc scooter segment, a category that balances everyday practicality with enough performance for urban and suburban commuting. While the Dio name has traditionally been associated with younger riders and sportier styling, the 125cc version expands on that formula by introducing a larger engine, additional technology, and convenience-oriented features. The Smart variant sits at the top of the Dio 125 range and incorporates Honda’s keyless operation system alongside the standard mechanical package. Power comes from a 123.92cc single-cylinder, air-cooled engine equipped with fuel injection. The engine is designed primarily for city use, where scooters spend most of their time navigating traffic, frequent stops, and short-distance journeys. Fuel injection helps maintain consistent performance under varying conditions, while Honda’s enhanced Smart Power (eSP) technology integrates several efficiency-focused measures within the engine design. The powertrain is paired with a continuously variable transmission (CVT), eliminating the need for manual gear changes and contributing to the scooter’s ease of operation. One of the notable features of the engine package is the Idling Stop System. When the scooter remains stationary for a short period, the system automatically switches off the engine to reduce fuel consumption. Twisting the throttle restarts the engine almost immediately. This feature is intended primarily for urban riding environments where frequent traffic signals and congestion can lead to extended periods of idling. The chassis uses an underbone frame structure, which is common among modern scooters because it allows easy mounting and dismounting while also providing space for storage and fuel-system packaging. Suspension duties are handled by telescopic front forks and a rear monoshock. The setup is configured around everyday commuting requirements rather than performance-oriented riding. Wheel sizes and tyre dimensions are selected to maintain manoeuvrability in traffic while providing sufficient stability for typical road conditions. Visually, the Dio 125 Smart follows a more aggressive design language than many family-oriented scooters. Sharp body panels, angular styling elements, and a prominent front apron give the scooter a sportier appearance. The LED headlamp and position lamps form part of the design rather than appearing as separate additions, while the bodywork maintains a compact overall footprint. Despite the sporty styling, the scooter retains practical elements such as a flat floorboard area and integrated storage spaces. The Smart variant’s defining feature is Honda’s Smart Key system. Instead of relying solely on a conventional key, the scooter can be operated through a wireless smart key that enables functions such as ignition control, seat opening, fuel-lid access, and vehicle location assistance. These features are integrated into the scooter’s daily operation and are intended to improve convenience rather than alter performance. A fully digital instrument cluster provides riding information including speed, fuel level, trip data, mileage indicators, and service reminders. The display layout remains relatively straightforward and prioritizes commonly used information. Additional practical features include an external fuel-filler cap, allowing refuelling without opening the seat, and under-seat storage suitable for carrying daily essentials. The scooter has a fuel tank capacity of 5.3 litres and a kerb weight of approximately 105 kg. These figures place it among the lighter scooters in the 125cc category, contributing to its agility during low-speed manoeuvres. Combined with the fuel-injected engine, automatic transmission, Smart Key system, and commuter-focused chassis, the Dio 125 Smart is configured around the requirements of everyday urban mobility while retaining the sporty styling that has long been associated with the Dio name. |
| Expert Review | The Fat Boy has always been a motorcycle that prioritizes presence as much as performance. Even by cruiser standards, it feels substantial, whether you're looking at it parked or riding it down the road. The Milwaukee-Eight 117 engine suits the character of the bike perfectly, producing the kind of effortless torque that allows you to ride without constantly thinking about gear selection or engine speed. What stands out most is how planted the motorcycle feels once it's moving. The wide tyres, long wheelbase, and considerable weight create a sense of stability that encourages a relaxed riding style rather than an aggressive one. At the same time, those same traits mean the Fat Boy asks for a bit more effort in slow-speed situations and doesn't feel particularly eager when the road becomes tight and technical. The riding experience is less about chasing performance figures and more about the way the motorcycle delivers its power, carries its weight, and settles into a steady rhythm on open roads. Modern electronics have improved safety and usability, but they remain secondary to the traditional cruiser character that continues to define the Fat Boy., 4.4, MotoAutiv Team | The Dio 125 Smart follows a different approach from many scooters in the 125cc segment. Rather than focusing on maximum storage space, a broad seat, or a family-oriented design, it places greater emphasis on compact dimensions and sporty styling. The engine is tuned for everyday urban use, delivering smooth acceleration and predictable throttle response rather than outright performance. In traffic, the scooter feels light and easy to manoeuvre, which is helped by its relatively low weight and responsive steering. The riding position is upright and familiar, making it easy to adapt to for riders moving up from smaller scooters. The Smart variant's keyless system adds convenience to daily use, reducing the need to repeatedly access a physical key. On the road, the suspension and wheel setup prioritize agility, which helps the scooter feel nimble in city environments, though rough surfaces can be felt more clearly than on some comfort-focused alternatives. The overall package reflects a scooter developed primarily around urban mobility, with its specifications and design choices largely aimed at everyday commuting rather than long-distance travel or utility-focused use., 4.2, MotoAutiv Team |
| FAQ (Manual Override) | Q: What type of motorcycle is the Harley-Davidson Fat Boy? A: The Fat Boy is classified as a heavyweight cruiser motorcycle, designed around relaxed riding ergonomics, a large V-twin engine, and long-distance road comfort. Q: Which engine powers the Fat Boy? A: The latest model uses the Milwaukee-Eight 117 V-twin engine paired with a 6-speed gearbox. Q: Is the Fat Boy suitable for long-distance rides? A: Yes. The relaxed ergonomics and torque-rich engine make it capable of covering long distances, although many owners add touring accessories for greater comfort. Q: What is the seat height of the Fat Boy? A: The seat height is approximately 675 mm, making it accessible to a wide range of riders. Q: Does the Fat Boy have cruise control? A: Availability depends on market and model year. Some versions include cruise control, while others may offer it as an accessory. Q: What is the fuel tank capacity of the Fat Boy? A: The motorcycle is equipped with an 18.9-litre fuel tank. Q: Does the Fat Boy have riding modes? A: Yes. Modern versions include selectable riding modes and electronic rider-assistance systems. Q: Is the Fat Boy comfortable for a passenger? A: Occasional two-up riding is possible, but the stock setup is more rider-focused than dedicated touring motorcycles. Q: How is the Fat Boy different from the Breakout? A: The Fat Boy focuses on a broad, muscular cruiser character with solid-disc wheels, while the Breakout adopts a stretched custom-cruiser design with a much wider rear tyre. Q: Does the Fat Boy have traction control and ABS? A: Yes. Modern versions include ABS, traction control, and other rider-assistance technologies. Q: What is the kerb weight of the Harley-Davidson Fat Boy? A: The motorcycle weighs approximately 315 kg in running condition, depending on market specification. Q: Is the Fat Boy beginner-friendly? A: The low seat height helps with accessibility, but the weight, engine size, and overall dimensions make it better suited to riders with some experience. Q: Does the Fat Boy support smartphone connectivity? A: The Fat Boy uses a relatively simple instrumentation setup compared to Harley's touring models, so smartphone integration is limited. Q: What body type does the Fat Boy belong to? A: It is categorized as a cruiser motorcycle, specifically a heavyweight cruiser designed around comfort, torque delivery, and road presence. | Q: What is the Honda Dio 125 Smart? A: The Dio 125 Smart is the top-spec variant of the Honda Dio 125 and includes Honda's Smart Key system along with other convenience features. Q: What engine does the Dio 125 Smart use? A: It is powered by a 123.92cc, single-cylinder, air-cooled, fuel-injected engine. Q: What is the power output of the Dio 125 Smart? A: The engine produces approximately 8.2 bhp and 10.4 Nm of torque. Q: What is Honda Smart Key? A: Honda Smart Key is a keyless operation system that allows functions such as ignition control, seat opening, fuel lid access, and vehicle location without inserting a physical key. Q: Does the Dio 125 Smart have a fully digital instrument cluster? A: Yes. It comes with a digital display showing speed, fuel level, trip information, mileage indicators, and service reminders. Q: Does the scooter have Bluetooth connectivity? A: No. Unlike some rivals such as the TVS Ntorq 125, the Dio 125 Smart does not offer Bluetooth smartphone connectivity. Q: What is the fuel tank capacity? A: The fuel tank capacity is 5.3 litres. Q: What is the kerb weight? A: The Honda Dio 125 Smart weighs approximately 105 kg. Q: Does it have an idle-stop system? A: Yes. Honda's Idling Stop System automatically switches off the engine during prolonged stops and restarts it when the throttle is twisted. Q: What type of brakes does it use? A: The scooter uses a front disc brake and a rear drum brake with Honda's Combined Braking System (CBS). Q: What is the seat height? A: The seat height is approximately 708 mm. Q: Is the Dio 125 Smart suitable for highway riding? A: It can be used on highways for shorter journeys, but it is primarily designed for urban commuting and city traffic conditions. Q: How is the Dio 125 Smart different from the Activa 125? A: Both share a similar engine platform, but the Dio 125 adopts a sportier design and lighter feel, while the Activa 125 focuses more on practicality and family-oriented usage. Q: Does it have external fuel filling? A: Yes. The scooter features an external fuel filler cap, eliminating the need to lift the seat during refuelling. Q: What mileage does the Dio 125 Smart offer? A: Real-world fuel efficiency generally falls in the range of 45–55 km/l, depending on riding conditions, traffic, and maintenance. |
| Fuel System | Fuel Injection | Fuel Injection |
| Price Variants | STD | 2803000 | STD | 87258 H-Smart | 92208 |
| Pros | Instantly Recognizable Design – Few motorcycles are as easy to identify from a distance as the Fat Boy. The solid-disc wheels, wide stance, and muscular proportions give it a presence that stands out even among other cruisers. Torque-Rich Engine Character – The Milwaukee-Eight 117 doesn't need to be revved hard to make progress. A small twist of the throttle is usually enough to get the bike moving with very little effort. Relaxed Riding Position – The low seat, wide handlebar, and stretched-out foot controls create a laid-back riding posture that suits cruising and long hours in the saddle. Feels Stable on Open Roads – Once the bike is moving, its weight starts working in its favour. It feels planted at highway speeds and doesn't get unsettled easily. High-Quality Finish – From the paintwork to the chrome detailing and metal components, the overall fit and finish reflects the premium nature of the motorcycle. Low Seat Height Helps at Stops – Despite being a large motorcycle, the low seat makes it easier for many riders to place both feet firmly on the ground. Modern Electronics Without Changing the Character – Features such as ABS, traction control, and riding modes work in the background without taking away from the traditional cruiser feel. Comfortable Engine for Cruising – The engine settles into a relaxed rhythm at highway speeds and rarely feels stressed during normal riding. | Refined 125cc Engine – The air-cooled single-cylinder engine delivers smooth and predictable performance, particularly in city traffic where scooters spend most of their time. Throttle response is progressive and easy to manage. Light and Easy to Handle – The Dio 125 remains one of the lighter scooters in its class, making it convenient for filtering through traffic, taking U-turns, and parking in tight spaces. Sporty Styling – Sharp body panels, split-style grab rails, aggressive graphics, and a distinctive LED headlamp help differentiate it from more conservative family-oriented scooters. Honda Smart Key System – The Smart variant includes keyless functions such as Smart Find, Smart Unlock, and anti-theft features, reducing the need to use a conventional key for everyday operation. Good Fuel Efficiency – The engine's idle-stop system and fuel-injection setup help keep fuel consumption relatively low during daily commuting. Digital Instrument Cluster – The display provides information such as mileage, trip data, fuel level, and service reminders in an easy-to-read format. Comfortable for Daily Urban Use – The scooter's dimensions, seat height, and riding position suit short and medium-distance commuting. Honda Service Network – Wide service coverage and easy availability of spare parts contribute to ownership convenience. |
| Starter | Electric | Self Start |
| Transmission | 6-speed manual | Automatic |
