Quick Analysis
KTM 50 SX
12.0 pts
Unweighted: 9 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
Royal Enfield Scram 440
23.5 pts
Unweighted: 14 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Air Cooled |
| Displacement | 49.9 cc | 443 CC |
| Engine Type | 1-cylinder, 2-stroke engine | Single Cylinder, 4 stroke, Fuel Injection |
| Power | 5.3 bhp @ 11500 rpm | 25.4 Bhp |
| Torque | 5.2 Nm @ 7500 rpm | 34 Nm @ 4000 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | 15.0 L |
| Mileage | 30 kmpl | — |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 196 Kg |
| Seat Height | 653 mm | 795 mm ( 2' 7") |
Brakes & Suspension |
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| ABS | — | Dual Channel ABS (Switchable Rear) |
| Front Brake | Disc 160 mm | 300 mm Hydraulic Disc |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | Telescopic |
| Rear Brake | Disc 160 mm | 240 mm Hydraulic Disc |
| Rear Suspension | XACT WP mono shock | Monoshock |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 100/90 - 19" |
| Rear Tyre | 2.75 - 10 | 120/90 - 17" |
| Tyre Type | Tubed | Tube/Tubeless |
| Wheel Type | Spoke | Spoke/Alloys |
Features & Technology |
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| Headlight | — | 14/12 W LED |
Other Specifications |
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| Battery | — | 12 V, 8 AH |
| Cluster | — | Digital-Analogue |
| Color Options | Electronic Orange | Force Blue | #fafafa,#365470 Force Grey | #2d3333,#ed6c21 Force Teal | #94918d,#3fe8dd Trail Blue | #f7f7f5,#4b6773 Trail Green | #f7eee9,#5f7862 |
| 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. | — |
| 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 Royal Enfield Scram 440 is a practical, road-friendly scrambler built to blend everyday usability with light off-road capability. At its core is a refined 443 cc long-stroke single-cylinder engine that produces about **25–25.7 bhp** and **34 Nm of torque**, routed through a six-speed gearbox that improves highway manners and keeps city commuting relaxed. These mechanical updates give the Scram 440 stronger mid-range performance and smoother NVH compared with the older 411-series engine. Royal Enfield has kept the bike’s riding position upright and confidence-inspiring, with a chassis and suspension setup tuned for mixed-surface use rather than hardcore trail work. The Scram’s 15-litre tank, manageable ergonomics and 196 kg kerb weight make it easy to live with daily while still comfortable for weekend rides. It uses a six-speed gearbox and, depending on the variant, offers features such as tubeless alloy wheels, switchable ABS and improved brakes that lift real-world usability. On the tech front, the Scram 440 is positioned as a modern, rider-friendly machine: Royal Enfield says it benefits from improved refinement and convenience features compared with earlier small-capacity models, and some variants include a semi-digital / circular display and smartphone connectivity. The model also benefits from better clutch feel and reduced heat, addressing common user complaints of earlier small-capacity REs. For navigation and connectivity lovers, Royal Enfield’s recent product communications highlight improved instrumentation and rider aids on its 440-series models. Price and market positioning make the Scram 440 attractive to buyers seeking characterful, affordable scrambler style without the complexity or cost of premium rivals. When launched it undercut many European competitors on price, with base variants starting around **₹2.08–2.23 lakh (ex-showroom)** in India depending on the source and trim — making it a strong value pick in the mid-capacity segment. In short, the Scram 440 is best for riders who want a versatile everyday motorcycle with enough capability for gravel roads and weekend escapes, combined with Royal Enfield’s signature character and simpler maintenance. It isn’t the most powerful or the lightest option in the segment, nor does it offer advanced electronics like traction control, but it wins on personality, practicality and price — a sensible choice if you want a comfortable, easygoing scrambler that’s built for real-world use rather than lap-time performance. |
| 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 | — |
| Price Variants | | 475000 | Trail Green | 223131 Trail Blue | 223131 Force Teal | 230641 Force Grey | 230641 Force Blue | 230641 |
| 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. | — |
| Starter | — | Electric |
| Transmission | Manual | — |
