Quick Analysis
KTM 50 SX
10.0 pts
Unweighted: 4 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
TRIUMPH BONNEVILLE SPEEDMASTER
27.5 pts
Unweighted: 19 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
||
| 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 |
||
| Fuel Tank Capacity | 2.3 L | 12 L |
| Mileage | 30 kmpl | 21.7 kmpl |
Dimensions & Weight |
||
| Kerb Weight | 41 kg | 263 kg |
| Seat Height | 653 mm | 705 mm |
Brakes & Suspension |
||
| 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 and preload adjustment |
Tyres & Wheels |
||
| Front Tyre | 60/100 - 12 | MT 90 B16 |
| Rear Tyre | 2.75 - 10 | 150/80 R16 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Features & Technology |
||
| Headlight | — | DRLs LED |
Other Specifications |
||
| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/11/bonnevillespeedmasterpacificbluesilverice.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/11/bonnevillespeedmasterjetblack.webp |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2025/11/bonneville-speedmaster_my25_icon-edition_rhs_629px.webp |
| Color Options | Electronic Orange | Snowdonia / Cranberry Red Aluminium Silver Sapphire Black Jet Black Pacific Blue / Silver Ice |
| 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. | Low ground clearance & limited suspension travel: On bad or uneven surfaces, its cruiser geometry and low clearance can be a drawback—especially in markets with rough roads. Heavy weight / less agility in tight scenarios: While stable at speed, the mass and cruiser chassis make it less nimble than lighter motorcycles, especially in traffic or tighter corners. Suspension setup may feel firm/stiff: Some reviewers mention that the suspension, tuned for style and load, can feel a bit firm or less compliant than ideal for rough surfaces. Premium cost and ownership aspects: As a premium bike in its class, purchase price, maintenance and parts/spares may cost more than simpler alternatives. |
| 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 Speedmaster** stands out as a true embodiment of British craftsmanship and cruiser comfort, blending timeless design with modern performance. Based on the same 1200cc High Torque Bonneville engine seen in Triumph’s modern classic range, the Speedmaster offers a uniquely relaxed and elegant riding experience, perfect for riders who seek effortless torque and all-day comfort. Its liquid-cooled, 8-valve, parallel-twin engine produces 78 PS of power at 6,100 rpm and 106 Nm of torque at 4,000 rpm, making it ideal for smooth acceleration and laid-back highway cruising. The power delivery is strong and linear, with a deep, throaty exhaust note that enhances the motorcycle’s distinctive cruiser character. From a design perspective, the Bonneville Speedmaster perfectly captures the spirit of classic British cruisers. Its low-slung stance, wide handlebars, swept-back foot controls, and teardrop fuel tank give it a bold yet refined personality. Every component — from the chrome accents to the wire-spoked wheels and floating seat — reflects Triumph’s attention to detail and high-quality finish. The Speedmaster’s design is not just about looks; it’s engineered for comfort, with a low seat height of 705 mm that allows easy reach to the ground and a relaxed riding posture that makes long rides enjoyable. The ergonomics are complemented by a plush, well-contoured seat and the option for a comfortable pillion setup, making it suitable for two-up touring as well. In terms of features, Triumph ensures that the Bonneville Speedmaster retains modern technology without compromising its classic soul. The bike comes equipped with dual riding modes (Rain and Road), switchable traction control, dual-channel ABS, ride-by-wire throttle, cruise control, and full LED lighting — features that enhance both safety and convenience. The twin 310 mm front discs with Brembo calipers and a single 255 mm rear disc provide excellent braking performance, while the 47 mm Showa cartridge fork at the front and monoshock rear suspension ensure a stable and composed ride. Although the suspension is slightly on the firmer side, it contributes to confident handling and stability, even at higher speeds. On the road, the Bonneville Speedmaster delivers an experience that is both refined and engaging. The throttle response is smooth, gear shifts are precise, and the torque-rich engine ensures that overtakes and cruising at highway speeds are effortless. Its 12-litre fuel tank might not be ideal for long-distance touring, but it aligns well with the motorcycle’s cruiser-focused character. While the 263 kg wet weight makes it feel substantial, it remains well-balanced and easy to manage once in motion. Overall, the Triumph Bonneville Speedmaster combines timeless cruiser design, modern engineering, and excellent build quality in one package. It’s a motorcycle that appeals to riders who appreciate elegance, relaxed power, and the pleasure of riding a classic-inspired cruiser that’s equally capable of turning heads and covering long miles with ease. |
| 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 engine does the Bonneville Speedmaster have? A: It uses a 1,200 cc liquid-cooled, 8-valve, 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 for the Speedmaster in India? A: The seat height is approximately 705 mm and the wet weight is listed at about 263 kg (according to specification data) for the model in India. Q: What is the fuel tank capacity and what mileage can one expect? A: The fuel tank capacity is 12 litres. Real-world mileage is around ~18-20 km/l on mixed use in Indian conditions as per reviews. Q: What features and rider aids come with the Speedmaster? A: The Speedmaster comes with dual riding modes (Rain & Road), ABS, switchable traction control, cruise control, LED lighting, ride-by-wire throttle and torque-assist clutch. Q: What is the price of the Speedmaster in India? A: The ex-showroom price starts from around ₹ 13,37,500 for the latest variant in India. Q: What kind of chassis and wheels does the Speedmaster use? A: It uses a tubular steel cradle frame, 16″ wire-spoked wheels (16×2.5″ front and 16×3.5″ rear) with 47 mm Showa front forks and mono-shock at the rear, twin 310 mm front discs and single 255 mm rear disc with ABS. Q: Is the Speedmaster suitable for two-up riding and touring? A: Yes — its comfortable riding position with forward foot-pegs, low seat height and cruiser-style ergonomics make it well-suited for relaxed rides. However, its 12-litre tank and cruiser setup mean it's more for relaxed touring rather than ultra-long highway blasts. Q: What is the service interval for the Speedmaster? A: The service interval is about 16,000 km (10,000 miles) or 12 months, whichever comes first. |
| Price Variants | | 475000 | Standard | 1287500 |
| 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 low-end torque and ride feel: The 1200 cc twin delivers a rich, satisfying pull from low rpm, giving the Speedmaster good real-world usability. Iconic styling & credible build: It carries classic cruiser/modern-classic looks with swept-back bars, forward foot-controls and premium finishes, which many riders find appealing. Comfortable ergonomics (for many): With its low seat height (~705 mm in some markets) and cruiser-style riding position, it’s relatively accessible and suitable for relaxed rides. Modern features included: Despite its retro styling, it integrates modern tech—ride-by-wire throttle, two riding modes, ABS, traction control, cruise control and full LED lighting. |
| Transmission | Manual | 6-speed |
