Quick Analysis
KTM 50 SX
9.5 pts
Unweighted: 4 advantages
EnginePerformanceDimensionsBrakesTyresOther
SUZUKI HAYABUSA
24.5 pts
Unweighted: 16 advantages
EnginePerformanceDimensionsBrakesTyresOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Liquid Cooled |
| Displacement | 49.9 cc | 1,340 cm³ |
| Engine Type | 1-cylinder, 2-stroke engine | 4-Stroke, Liquid-cooled, DOHC,in-line four |
| Power | 5.3 bhp @ 11500 rpm | 190 bhp @ 9700 rpm |
| Torque | 5.2 Nm @ 7500 rpm | 142 Nm @ 7000 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | 20 L |
| Mileage | 30 kmpl | 18 kmpl |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 266 kg |
| Seat Height | 653 mm | 800 mm |
Brakes & Suspension |
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| ABS | — | Switchable ABS |
| Front Brake | Disc 160 mm | Disc 320 mm Caliper - Front 4 Piston |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | Inverted Telescopic, Coil Spring, Oil Damped |
| Rear Brake | Disc 160 mm | Disc 260 mm Caliper - Rear 1 Piston |
| Rear Suspension | XACT WP mono shock | Link Type, Coil Spring, Oil Damped |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 120/70ZR17M/C |
| Rear Tyre | 2.75 - 10 | 190/50ZR17M/C |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Other Specifications |
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| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/11/hayabusaglasssparkleblackmetallicmattitaniumsilver.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/11/hayabusametallicmysticsilverpearlvigorblue.webp |
| Color Options | Electronic Orange | Mat Steel Green Glass Sparkle Black White |
| 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. | Heavy and bulky — its mass and size make it less agile for slow-speed manoeuvres, tight city traffic, or U-turns; handling can feel unwieldy compared to smaller bikes. Not ideal for daily commuting — in urban traffic, congestion, or frequent stop-and-go situations, its power and size become impractical; it isn’t a city-friendly ride. Economy and upkeep aren’t modest — fuel consumption, tyre wear, servicing, and maintenance costs tend to be higher than regular commuter bikes. Can be intimidating for newer riders — the bike demands respect: its power delivery, weight and overall presence might overwhelm someone without adequate riding experience. Limited practicality — storage space, comfort for pillion riding, and ease of everyday use are compromised compared to more utilitarian bikes; it’s more about thrill than convenience. |
| 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. | Riding the Hayabusa feels like holding a full-blown super-sport bike in your hands — it’s serious, but not brutal. At its heart sits a 1,340 cc, 4-stroke, liquid-cooled, DOHC inline-four engine. With a bore/stroke of 81.0 mm × 65.0 mm and a relatively high compression ratio of 12.5:1, this engine isn’t about meek city-cruising — it’s about confident thrust. What that means when you twist the throttle: a surge of torque and power, even before you’re deep into the rev-range. The newer design — with lighter pistons, refined internals, improved lubrication passages, and a “Twin Swirl Combustion Chamber” — helps make the power smoother, more usable and reliable — not just explosive at high revs. On paper, power output is rated at 190 bhp at 9,700 rpm, with peak torque of 150 Nm at 7,000 rpm. What’s special is that this power and torque are tuned so the engine behaves well even in everyday riding — not just on open highways. The ride-by-wire throttle, a 6-speed constant mesh transmission and a wet, multi-plate slipper/assist clutch help make gear shifts smooth and predictable, whether you are crawling in traffic or throttle-on for a highway burst. You won’t miss performance on the open road — Hayabusa easily unleashes enough grunt to surge forward cleanly from mid-range, letting overtakes and roll-on acceleration happen without fuss. But thanks to the way Suzuki tuned the intake, combustion, and throttle control, it also avoids the jerkiness some high-power bikes suffer from — meaning daily commuting or city bursts become more manageable than a “raw” race-focused bike. Movement and posture on the Hayabusa reflect its dual nature: part super-sport beast, part (almost) grand tourer. Overall, the bike spans 2180 mm in length, 735 mm in width and 1165 mm in height, with a wheelbase of 1480 mm. A kerb weight of 266 kg and a seat height of 800 mm give it a substantial feel — you know you’re riding something serious. The fuel tank holds 20 litres, which on long rides gives you decent range. What that translates to in real life: on smooth roads and highways, the long wheelbase and weight lend the Hayabusa a stable, planted feel even at high speeds. On city roads, while it’s more weighty than a typical commuter bike, the slipper clutch, broad low-to-mid power band, and smooth throttle help manage manoeuvring and stop-and-go traffic without turning it into a monster. The suspension setup reflects a nice balance for a big sportbike: front uses inverted telescopic forks (oil-damped, coil spring), rear has a link-type single shock (coil spring, oil-damped) — both capable of absorbing road irregularities while giving predictable feedback. On an Indian road — where surfaces can vary — this setup helps smoothen things out, so you get a ride that’s firm enough for sporty riding but forgiving enough for real-world roads. Braking and tyres are equally serious. Up front there’s a twin-disc setup with top-tier Brembo Stylema® calipers, and a single-disc Nissin caliper at the rear. Both are ABS-equipped. The wheels wear tubeless tyres (front 120/70ZR17, rear 190/50ZR17) which together with the chassis and suspension offer strong grip and stability — important when you push hard, lean into curves or deal with unpredictable road surfaces. Where Hayabusa really steps ahead of “raw-power” bikes is its suite of electronics. The bike gets a comprehensive control package via its intelligent ride system: adjustable power modes (for sharp response or gentle city-friendly throttle), a bi-directional quick-shifter allowing clutchless up and down shifts, engine-brake control options, traction control that uses a 6-axis IMU to monitor lean/pitch/yaw (i.e. works even in corners), anti-lift (to prevent wheelies under heavy throttle), launch control, slope-dependent ABS, and more. In practical terms, this means that whether you’re “going fast” on a highway sweep, carving corners, or just commuting daily — the Hayabusa adapts. If roads are rough or conditions tricky, softer throttle maps and traction/ABS interventions give you confidence; if you want raw performance, the electronics let you tap it with assurance. It’s a surprising but welcome versatility — making Hayabusa less of a “race-only toy” and more of a real-world (albeit high-performance) bike you can live with. To sum up: riding Hayabusa feels like commanding a beast that knows how to behave. It has the grunt and top-end potential of a superbike, but thanks to Suzuki’s engineering — in engine design, chassis balancing, suspension tuning, braking, tyres and electronics — it’s also manageable enough for non-racetrack roads. On open highways you’ll feel its power truly — but even in city traffic or on back-roads, you won’t be fighting the bike; instead, you’ll be in control, enjoying its presence. |
| Expert Review | MotoAutiv Team | 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 is the mileage of the Hayabusa? A: The mileage of the Hayabusa is typically around 17–18 kmpl under normal riding conditions. Q: What is the fuel tank capacity? A: The Hayabusa has a 20-litre fuel tank. Q: What is the engine displacement? A: The engine displacement is 1,340 cc. Q: How much power does the engine produce? A: The Hayabusa produces up to 190 PS (or roughly 190 bhp) at 9,700 rpm. Q: What is the peak torque figure? A: The peak torque is 150 Nm at around 7,000 rpm. Q: What kind of brakes does it have? A: It uses twin 320 mm discs up front with Brembo Stylema®, 4-piston calipers and a single disc at the rear with a Nissin caliper — both discs are ABS-equipped. Q: What kind of tyres and wheels does it come with? A: It rides on tubeless alloy wheels — front tyre is 120/70ZR17 and rear is 190/50ZR17. Q: What are the suspension components? A: Up front there is an inverted telescopic fork (coil spring, oil-damped), and at the rear a link-type mono-shock (coil spring, oil-damped). |
| Price Variants | | 475000 | | 1806107 |
| 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. | Incredible acceleration and performance — the Hayabusa gives a powerful burst of speed and a strong sense of thrust when you twist the throttle, which makes highway rides and open-road runs exhilarating. Stability and composure at high speeds — its weight, long wheelbase, and well-tuned chassis help the bike feel planted and confident even when cruising fast or cornering hard. Balanced enough for long rides — despite being a superbike, it doesn’t feel like a torture rack: the seating and suspension offer decent comfort for touring or long-distance travel. Strong braking & road-holding confidence — braking performance and tyre/grip setup give a reassuring sense of control, even when slowing down from high speeds. Prestige, style and presence — owning/riding a Hayabusa carries a certain status and charm; it draws attention and delivers that “superbike feel” many riders seek. |
| Starter | — | Electronic Ignition |
| Transmission | Manual | 6-Speed |
