Quick Analysis
KTM 50 SX
10.0 pts
Unweighted: 4 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
TRIUMPH BONNEVILLE BOBBER
28.0 pts
Unweighted: 20 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Liquid cooled |
| Displacement | 49.9 cc | 1200 cc |
| Engine Type | 1-cylinder, 2-stroke engine | 8 valve, SOHC, 270° crank angle parallel twin |
| Power | 5.3 bhp @ 11500 rpm | 78 PS / 76.9 bhp (57.5 kW) @ 6100 rpm |
| Torque | 5.2 Nm @ 7500 rpm | 106 Nm @ 4000 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | 12 L |
| Mileage | 30 kmpl | 22 kmpl |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 251 |
| Seat Height | 653 mm | 700 |
Brakes & Suspension |
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| ABS | — | Dual Channel ABS |
| Front Brake | Disc 160 mm | Twin Ø310mm disc, Brembo 2-piston sliding axial calipers, ABS |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | Ø 47 mm Showa cartridge forks |
| Rear Brake | Disc 160 mm | Single Ø255mm disc, Nissin single piston sliding axial caliper, ABS |
| Rear Suspension | XACT WP mono shock | Mono-shock RSU with linkage |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | MT 90 B16 |
| Rear Tyre | 2.75 - 10 | 150/80 R16 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Spoke |
Features & Technology |
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| Headlight | — | DRLs LED |
Other Specifications |
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| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/11/bonneville-bobber_my25_icon-edition_rhs_629px.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/11/bonneville_bobber_my24_jet_black_ash_gray_rhs_629px.webp |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2025/11/bonnevillebobberjetblack.webp |
| Color Options | Electronic Orange | Matt Graphite / Matt Baja Orange | #3A3A3A, #C65A1E Sapphire Black Aluminium Silver | #0F1A2B, #C0C0C0 Jet Black | #0A0A0A Jet Black / Ash Gray | #0A0A0A, #B2B2B2 |
| Cons | High Maintenance: As a 2-stroke engine, it requires frequent servicing and tuning. Small Fuel Tank: Limited capacity means more frequent refills. Kick-Start Only: No electric start, which can be tricky for very young riders. Limited Power for Older Kids: The 50cc engine may not be enough as the rider grows or becomes more skilled. Sensitive to Tuning: Owners report issues like fouling spark plugs or needing to frequently re-jet the carb: “Used to run great … then started fowling plugs … Moved to a 95 main jet … About 15 kph slower …” Parts Cost & Availability: As a race‑oriented bike, some parts can be expensive or harder to source for older models. | Limited ground clearance and suspension travel: The low clearance and modest suspension travel mean rough roads or poorly surfaced terrain can be problematic. Heavier and less nimble in traffic: The weight and the structural design make it more challenging in tight urban riding or slow-speed riding. Single-seat or limited pillion comfort: Many reviews point out the one-seat look (or minimal provision for a pillion) reduces practical usability for two-up riding. Premium cost and maintenance: As a high-end motorcycle, purchase cost, servicing and parts may be higher compared to more mass-market bikes. |
| Detailed Overview | The KTM 50 SX is a purpose-built mini motocross bike, tailored primarily for very young and beginner racers who want to get a genuine motocross experience without jumping straight to bigger bikes. It’s more than just a “toy” — KTM has packed serious race-bike DNA into this 50cc model, making it a standout choice for youth motocross training and competitive racing. At the heart of the 50 SX is a 49.9 cc single-cylinder 2-stroke engine, which delivers a punchy yet manageable power output. According to KTM’s specs, this engine is paired with a centrifugal automatic clutch, meaning there’s no manual clutch lever to worry about — the clutch engages automatically, which is ideal for young riders still building coordination and confidence. The engine uses a Seletra 2p D36 system for fuel delivery (on some models), which helps in precise tuning and reliable performance. KTM has thoughtfully designed the chassis for both strength and agility. The frame is made from chromoly steel, which keeps it light but sturdy. The overall design ensures that the bike is highly maneuverable, making it easier for young riders to learn balance and control on a real race-ready structure. The 50 SX isn’t just about motor and frame — it comes with serious suspension too: a WP XACT 35 mm upside-down fork at the front and a WP mono‑shock at the rear.The front suspension travel is around 200 mm and the rear is close to 190 mm, giving enough give for track bumps and jumps. In terms of ergonomics, the seat height is just 653 mm, making it very accessible for younger riders. Ground clearance is around 233 mm, giving the bike enough space to handle uneven terrain without scraping too much.The fuel tank capacity is modest — 2.3 liters — but that’s more than enough for short motocross sessions that young riders typically do. For braking, KTM hasn’t compromised: the 50 SX is equipped with disc brakes both front and rear, each 160 mm in size. This provides good stopping power and control, which is very important for safety and learning advanced braking techniques. On the wheels front, the bike uses spoke wheels, keeping things light and rugged for off-road racing. Despite its small size, the 50 SX is very race-focused. The frame has been redesigned to mimic the flex and rigidity characteristics of full-size MX bikes. The new frame also comes with frame protectors, which help reduce damage in case of falls — a common occurrence when young riders are learning. The handlebars are lightweight aluminum, with a bend that suits smaller riders, and the footpegs are designed to give a solid grip even when things get muddy or rough. KTM also includes power-reduction kits in its parts catalog for the 50 SX. These kits let parents or coaches limit the power output while the rider is still learning, which is a smart way to scale the bike’s performance to the rider’s ability — and once they’re better, the full power can be unlocked. When it comes to reliability, the 50 SX has a liquid cooling system for better thermal management. The engine’s central crankshaft design helps in keeping the mass well-balanced, which contributes to smoother handling. As for maintenance, like all 2-stroke motorcycles, it does need regular care — but KTM has made key parts (like the clutch) durable, using a reinforced clutch basket for longevity. Overall, the KTM 50 SX is a very well-engineered youth motocross bike that brings real race performance to younger riders. It balances power, weight, and control in a way that helps beginners grow into serious racers. Whether for track training, competitive racing, or just building early riding skills, it’s absolutely one of the top choices in the mini-moto world. | The Triumph Bonneville Bobber is a motorcycle that follows a minimalist, cruiser-style design, and its specifications are built around that concept. It is powered by a 1200 cc, liquid-cooled, parallel-twin engine that produces around 78 PS and 106 Nm of torque, paired with a 6-speed gearbox. The engine is tuned to deliver strong pull at low speeds, which means the bike can move smoothly in traffic without frequent gear changes. It also feels steady on highways, where it can cruise at consistent speeds rather than being pushed aggressively. The bike is built on a steel frame and uses conventional front forks along with a rear monoshock that is hidden under the seat to maintain the hardtail look. The suspension setup is on the firmer side, so bumps and rough patches on the road are clearly felt, especially in city conditions. Braking is handled by a single disc at the front and a single disc at the rear, supported by dual-channel ABS. It rides on a 19-inch front wheel and a 16-inch rear wheel, which adds to its low and stretched-out stance. In terms of dimensions, the Bonneville Bobber weighs around 251 kg, which makes it quite heavy, especially at low speeds or when moving it around in tight spaces. The seat height is very low, around 690 mm, making it easy for most riders to place their feet on the ground. It comes with a fuel tank capacity of about 12 litres, which is smaller compared to other bikes in this segment, so fuel stops may be more frequent on longer rides. Ground clearance is around 120 mm, which means extra care is needed on speed breakers and uneven roads. The bike comes with a semi-digital instrument cluster that combines an analogue speedometer with a small digital display for information like fuel level, gear indicator, and trip details. It also includes features like riding modes, traction control, ride-by-wire throttle, and a torque-assist clutch. However, it does not focus heavily on advanced connectivity features. In real-world riding, mileage usually falls between 18 to 22 km/l depending on riding style and traffic. Overall, the Bonneville Bobber’s specifications are more focused on its unique design and relaxed riding style, rather than everyday practicality or long-distance touring comfort. |
| Expert Review | MotoAutiv Team | The Triumph Bonneville Bobber is a bike that focuses more on riding feel and design than everyday usability. It uses a 1200 cc engine that delivers strong pull at low speeds, which makes it easy to ride in traffic without constant gear shifts, and it stays smooth on highways as well. The riding position is different from regular bikes, and the single-seat setup means there is no option for a pillion. The suspension is a bit stiff, so bumps and rough roads are clearly felt, especially in city conditions. Its weight is noticeable at low speeds, and handling it in tight traffic or while parking can take some effort. The bike comes with basic features like riding modes, traction control, and a simple display, without focusing much on advanced tech. Overall, it suits slower, relaxed rides more than daily heavy usage or long-distance comfort., 4.4, MotoAutiv Team |
| FAQ (Manual Override) | Q: What is the engine capacity of the KTM 50 SX? A: It has a 49.9 cc 2-stroke engine. Q: What kind of transmission does it use? A: The KTM 50 SX has a single-speed automatic transmission. Q: How is the KTM 50 SX started? A: It uses a kick-start. Q: Does it have a clutch? A: Yes — a centrifugal (adjustable) clutch, so the rider doesn’t have to use a manual clutch lever. Q: What is the fuel tank capacity? A: The fuel tank capacity is 2.3 litres. Q: What is the seat height? A: The seat height is 653 mm. Q: What is the weight of the bike? A: The dry (or “without fuel”) weight is about 43.5 kg for recent models. Q: What kind of suspension does the KTM 50 SX use? A: It comes with WP XACT suspension — a 35 mm upside-down fork in the front and a WP mono-shock at the rear. Q: What brakes does it have? A: It has disc brakes both at the front and rear, each 160 mm. Q: What power does the KTM 50 SX produce? A: The KTM 50 SX produces around 5.3–5.4 PS at ~11,500 rpm. Q: Is the KTM 50 SX road legal? A: No — it's designed for off-road / motocross use, not for street-legal riding. Q: What kind of clutch does it have for young riders? A: It uses a centrifugal clutch, which automatically engages at high RPM — good for beginners or young riders who don’t manually operate a clutch. Q: What is the ground clearance? A: The ground clearance is 233 mm. Q: Is there a guarantee or warranty for KTM 50 SX? A: According to specs, it has a 2-year standard warranty. Q: What is the typical maintenance challenge or issue to watch for? A: Some owners report carburetor tuning issues | Q: What engine does the Bonneville Bobber have? A: It is powered by a 1,200 cc liquid-cooled, 8-valve SOHC parallel-twin engine with a 270° crank, producing around 78 PS at 6,100 rpm and 106 Nm of torque at 4,000 rpm. Q: What is the seat height and wet weight of the Bobber? A: The seat height is approximately 700 mm and the wet weight is around 251 kg. Q: What is the fuel tank capacity and expected mileage of the Bobber? A: The fuel tank capacity is 12 litres. Real-world mileage may vary, but official consumption is around 4.5 L/100 km (~60.9 mpg) in test conditions. Q: What rider aids and features does the Bonneville Bobber include? A: It features ride-by-wire throttle, two riding modes (Road & Rain), switchable traction control, dual-channel ABS, LED lighting and a single analogue/digital instrument display. Q: What type of wheels and front suspension does the Bobber use? A: It uses 16-inch wire-spoke wheels (16×2.5” front, 16×3.5” rear) and a 47 mm Showa cartridge front fork. Q: What is the ex-showroom price of the Bobber in India? A: The price starts from around ₹ 12,87,500 in India for the latest variant. Q: Is the Bonneville Bobber suitable for commuting and city rides? A: Yes, its low seat height (700 mm) and retro cruiser styling make it accessible, although its weight and single-seat bobber layout may make heavy-traffic manoeuvres slightly more demanding. Q: How often does the Bonneville Bobber need servicing? A: The service interval is every 10,000 miles (≈ 16,000 km) or 12 months, whichever comes first. |
| Fuel System | — | Fuel Injection |
| Price Variants | | 475000 | Standard |1287500 Icon | 1367500 |
| Pros | Very Lightweight: Makes it easy for young riders to handle and build confidence. Automatic Transmission: The centrifugal clutch and automatic gearbox simplify riding for beginners. Adjustable Suspension: High-quality WP fork and shock can be tuned to rider weight and track conditions. Racing‑Oriented Build: Frame and components are derived from KTM’s full-size SX range, giving a race-ready feel. Power-Reduction Kits Available: Helps beginners by limiting power until they’re ready for more. Good Cooling: Liquid cooling ensures the engine stays healthy even under hard off‑road use. Tool-Free Adjustability: Seat height, suspension, and other parts can be adjusted without special tools. | Stunning retro-bobber styling: The design is widely praised for its authentic custom look, with minimalist lines, a single seat, low profile and classic finishes. Low seat height making it accessible: Many users note the low seat height helps shorter riders get their feet down. Strong mid-range torque and fun power delivery: The 1,200 cc engine delivers a satisfying amount of torque and gives a characterful ride, especially appreciated in reviews. Good value as a premium classic: Owners mention the build quality, styling and presence give a “premium” feel that stands out in the modern class. |
| Starter | — | Self start |
| Transmission | Manual | 6-speed |
