Quick Analysis
KTM 50 SX
9.0 pts
Unweighted: 3 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
TRIUMPH NEW SPEED TWIN 900
28.5 pts
Unweighted: 21 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Liquid-cooled parallel twin |
| Displacement | 49.9 cc | 900 cc |
| Engine Type | 1-cylinder, 2-stroke engine | 8 valve, SOHC, 270° firing order |
| Power | 5.3 bhp @ 11500 rpm | 65 PS / 64 bhp (47.8 kW) @ 7,500 rpm |
| Torque | 5.2 Nm @ 7500 rpm | 80 Nm @ 3,800 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | 12 L |
| Mileage | 30 kmpl | 24 kmpl |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 216 |
| Seat Height | 653 mm | 780 mm |
Brakes & Suspension |
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| ABS | — | Dual Channel ABS |
| Front Brake | Disc 160 mm | Single Ø 320mm floating disc, Triumph branded four-piston radial caliper, OCABS |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | NEW Ø 43mm upside-down Marzocchi forks, 120 mm wheel travel |
| Rear Brake | Disc 160 mm | Single Ø 255mm fixed disc, Nissin 2-piston floating caliper, OCABS |
| Rear Suspension | XACT WP mono shock | NEW Twin Marzocchi RSUs with external reservoirs and adjustable preload, 116 mm wheel travel |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 100/90-18 |
| Rear Tyre | 2.75 - 10 | 150/70 R17 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
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/speedtwin900phantomblackaurumgold.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/11/speedtwin900aluminiumsilvercarnivalredjetblack.webp |
| Cluster | — | LCD multi-function instrument Colour TFT screen |
| Color Options | Electronic Orange | Phantom Black/Aurum Gold | #131413,#666666,#7d674b Pure White/Maui Blue/Tangerine Orange | #f2f1f0,#cf5a00,#0081de Aluminium Silver/Carnival Red/Jet Black | #9a9c9c,#99222a,#212121 |
| 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. | Relatively high weight: At about 216 kg (kerb), it’s heavier than some rivals, which can affect maneuverability in tight city riding. Limited feature set compared to some modern competitors: For example, some feel the number of riding modes is minimal (just Road/Rain) and advanced electronics are fewer. Relatively small fuel tank / moderate range for touring: Some users feel the fuel capacity and/or efficiency are less suited for longer non-stop rides compared with more touring-oriented bikes. Premium maintenance & service network considerations: As a premium brand model, ownership costs (service, parts) and dealer coverage may lag compared to 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 Speed Twin 900 stands out as one of the most refined modern-classic motorcycles in the mid-capacity segment, offering a blend of heritage styling and contemporary engineering that appeals to both new and experienced riders. It carries the spirit of classic British roadsters with its sculpted fuel tank, chunky tires, brushed metal finishes and minimalist retro profile, yet underneath the nostalgic design lies a machine engineered for today’s road conditions and riding expectations. The bike delivers a smooth and engaging riding experience thanks to its torquey 900cc parallel-twin engine, which is tuned more for usable everyday power than aggressive top-end performance. This makes it particularly enjoyable in urban riding and relaxed highway cruising, where riders value effortless acceleration, refined throttle response and predictable handling. Its low-end and mid-range pull gives it a lively feel without overwhelming newer riders, and its dual-channel ABS and traction control offer confidence-building safety features. One of the most appreciated aspects of the Speed Twin 900 is its ergonomics and comfort. The upright seating posture, wide handlebars and well-cushioned seat create a natural and relaxed stance, which suits long rides as well as daily commutes. The suspension setup is tuned for comfort rather than aggressive sportiness, absorbing bumps well and offering a planted feel on most road surfaces. Build quality is another strong point, as Triumph has earned a reputation for premium fit, finish and attention to detail. Every component—from grips and switches to paint and metalwork—feels thoughtfully executed, lending the bike a premium persona that is hard to overlook. While it leans heavily on retro charm, it still integrates essential modern touches like a digital-analogue instrument cluster, ride-by-wire with selectable riding modes and quality braking components, ensuring a balance between nostalgia and practicality. However, the Speed Twin 900 is not without limitations. Riders looking for a feature-rich, tech-loaded motorcycle may find its electronics and display rather minimal compared to more aggressively modern machines in the price bracket. Its weight, too, can be felt at low speeds or in tight parking situations, though once in motion the bike hides it well. Additionally, being a premium brand offering, long-term ownership requires consideration of servicing costs, parts pricing and the availability of authorized support networks—something that varies significantly between regions. Yet for most riders drawn to its charm, these concerns are part of the ownership commitment that comes with a high-quality classic motorcycle brand. In essence, the Triumph Speed Twin 900 is built for those who want a stylish, refined, torquey roadster with genuine old-school appeal but modern day rideability and reliability. It does not chase extreme performance numbers or futuristic gadgetry; instead, it focuses on delivering a pure, enjoyable and comfortable riding experience rooted in timeless motorcycling character. It’s a motorcycle one buys not merely for commuting or weekend escapes, but for the emotional connection it builds—every ride reminding you why simple, soulful machines still have a place in a world full of high-tech options. |
| Expert Review | MotoAutiv Team | 4.5, 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 engine capacity of the Speed Twin 900? A: It has a 900 cc liquid-cooled parallel twin engine with 8-valves and a 270° firing order. Q: How much power and torque does the Speed Twin 900 produce? A: It delivers about 65 PS (64 bhp) at 7,500 rpm and 80 Nm of torque at approximately 3,800 rpm. Q: What is the seat height of the Speed Twin 900? A: The seat height is 780 mm in the latest version. Q: What is the kerb weight of the Speed Twin 900? A: It has a kerb (or wet) weight of about 216 kg. Q: What riding modes and electronic aids does the Speed Twin 900 come with? A: It offers two riding modes – Road and Rain – plus optimized cornering ABS and traction control. Q: What is the fuel tank capacity and approximate fuel consumption of the Speed Twin 900? A: The fuel tank capacity is 12 litres, and real-world mileage is around ~24–25 km/l under mixed riding conditions. Q: Is the Speed Twin 900 suitable for both commuting and weekend rides? A: Yes — its upright ergonomics, manageable seat height, and smooth engine make it well-suited for everyday use, while its performance and premium build make it fun for weekend escapes. Q: What is the starting price of the Speed Twin 900 in India? A: In India, the ex-showroom price starts at around ₹ 9.7 lakh for the standard variant. |
| Fuel System | — | Multipoint fuel injection |
| Price Variants | | 475000 | Aluminium Silver/Carnival Red/Jet Black | 971300 Pure White / Maui Blue / Tangerine Orange | 1021300 Phantom Black / Aurum Gold | 1021300 |
| 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. | Excellent engine character: The 900 cc parallel-twin delivers a strong, flat torque curve, making the bike very usable in both city and highway conditions. Premium build, finish & styling: Reviewers frequently highlight the high quality of fit/finish, classic-modern aesthetics and “nice bike” appeal. Comfortable ergonomics for varied use: The seating position is upright and the bike is described as easy to ride day-to-day, making it suitable for both commuting and light touring. Strong braking & handling feel: Many riders mention it handles corners and braking confidently, with good feedback. |
| Starter | — | Self |
| Transmission | Manual | 5 speed |
