Quick Analysis
KTM 50 SX
7.5 pts
Unweighted: 5 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
SUZUKI GIXXER SF/ GIXXER
29.5 pts
Unweighted: 21 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Air Cooled |
| Displacement | 49.9 cc | 155 cc |
| Engine Type | 1-cylinder, 2-stroke engine | 4-Cycle, 1-cylinder, Air cooled |
| Power | 5.3 bhp @ 11500 rpm | 13.4ps @ 8000rpm |
| Torque | 5.2 Nm @ 7500 rpm | 13.8Nm @ 6000rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | 12 L |
| Mileage | 30 kmpl | 45 kmpl |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 148 |
| Seat Height | 653 mm | 795 |
Brakes & Suspension |
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| ABS | — | Single Channel |
| Front Brake | Disc 160 mm | Disc 266 mm Caliper - Front 2 Piston |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | Telescopic |
| Rear Brake | Disc 160 mm | Disc 240 mm Caliper - Real 1 Piston |
| Rear Suspension | XACT WP mono shock | Swing Arm |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 100/80-17M/C 52P |
| Rear Tyre | 2.75 - 10 | 140/60R17M/C 63P |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Features & Technology |
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| Headlight | — | LED |
Other Specifications |
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| Battery | — | Maintenance free 12V, 3Ah |
| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/12/Metallic-Lush-Green.avif |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/12/Glass-Sparkle-Black-1.avif |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2025/12/Metallic-Triton-Blue-Pearl-Glacier-White.avif |
| Bike Image 4 | — | https://motoautiv.com/wp-content/uploads/2025/12/Pearl-Mira-Red.avif |
| Color Options | Electronic Orange | Glass Sparkle Black | #0A0A0A Metallic Oort Gray and Pearl Mira Red | #5A5F63, #9E1B22 Metallic Oort Gray and Metallic Lush Green | #5A5F63, #8FAF2F Met Triton Blue and Pearl Glacier White | #0057A6, #F4F7FB Glass Sparkle Black and Metallic Oort Gray | #0A0A0A, #5A5F63 |
| 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. | Being a 155 cc bike, it may feel underpowered if you seek high-speed performance or aggressive acceleration. Single-channel ABS is not as comprehensive as dual-channel ABS for maximum safety. With a modest fuel tank capacity, long-distance rides may require more frequent refueling. Not designed for heavy loads, long tours, or aggressive highway use - better suited to city and moderate-distance riding. Overall performance and comfort may feel basic compared to higher-end or larger-displacement 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 Suzuki Gixxer SF is built around a 155cc, single-cylinder, air-cooled engine that uses fuel injection. On paper, the numbers are straightforward, but what stands out more is how the engine is tuned. It focuses on smooth and linear power delivery rather than chasing high peak figures, which becomes noticeable in everyday riding conditions. The motor is paired with a 5-speed gearbox, and the gear shifts feel predictable, without requiring much effort from the rider. It’s the kind of setup that doesn’t ask for too much attention and instead works quietly in the background. In terms of design, the Gixxer SF follows a fully faired layout, which gives it a sportbike-like appearance. The fairing is not just for looks, it also helps in managing airflow to some extent at higher speeds. The overall proportions are compact, and the bike doesn’t feel bulky when you move it around or ride it through traffic. The LED headlamp and tail lamp add a modern touch, while the digital instrument cluster keeps things simple by showing essential information like speed, fuel level, gear position, and trip data without overcomplicating the layout. The chassis is based on a standard street-oriented frame that prioritises stability and ease of handling. Suspension duties are handled by telescopic forks at the front and a monoshock at the rear. This combination is set up in a way that deals with regular road conditions without feeling too stiff or too soft. It manages uneven patches and speed breakers reasonably well, which is important considering the kind of roads most riders deal with daily. The riding posture is slightly leaned forward due to the clip-on handlebars, but it’s not extreme, so it doesn’t feel uncomfortable during longer commutes. Braking is handled by disc brakes at both ends, supported by a single-channel ABS system. The braking setup is straightforward and does what it’s expected to do, offering controlled stopping without being overly sharp. The bike runs on 17-inch wheels with tubeless tyres, which is standard in this segment and contributes to predictable grip on regular roads. The fuel tank capacity is around 12 litres, which, combined with the engine’s nature, is designed to offer a practical range for daily use. The overall weight is kept on the lighter side, which plays a role in how manageable the bike feels, especially for newer riders or those upgrading from smaller commuters. Overall, the Gixxer SF’s specifications reflect a setup that is built around ease of use and consistency. It doesn’t try to stand out through extreme numbers or complex features, but instead sticks to a combination that aligns with how motorcycles are typically used in Indian conditions |
| Expert Review | MotoAutiv Team | The Suzuki Gixxer SF still holds a familiar position in the Indian market, especially for riders looking at entry-level faired motorcycles. Spend some time with it, and the focus on everyday usability becomes clear, the engine feels smooth and predictable, which suits city riding more than spirited runs. The riding posture leans slightly sporty but doesn’t feel demanding, making it manageable for daily commutes as well as occasional longer rides. In traffic conditions, its refinement and light handling work in its favour, though performance remains more relaxed than exciting. What also stands out is how it continues to rely on a simple, tried-and-tested formula rather than chasing aggressive updates. In today’s market, where buyers have more choices, the Gixxer SF stays relevant by being easy to ride, straightforward to maintain, and consistent in what it offers., 3.8, 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 Gixxer SF? A: The mileage is generally around 40-45 kmpl in real-world riding. Q: What is the engine capacity of Gixxer SF? A: It comes with a 155 cc, air-cooled, single-cylinder engine. Q: How much power does GIxxer SF produce? A: It produces about 13.6 PS of power at 8,000 rpm. Q: What is the torque output of GIxxer SF? A: The torque is 13.8 Nm at 6,000 rpm. Q: Does the Gixxer SF have ABS? A: Yes, it comes with single-channel ABS. Q: What is the seat height of GIxxer SF? A: The seat height is approximately 795 mm. Q: What is the kerb weight of GIxxer SF? A: The kerb weight is about 148 kg. Q: What is the fuel tank capacity of GIxxer SF? A: The fuel tank can hold 12 litres of fuel. Q: What type of suspension does GIxxer SF use? A: It has telescopic front forks and a rear monoshock. Q: Are the tyres tubeless? A: Yes, it comes with tubeless tyres. Q: Does GIxxer SF use LED lighting? A: Yes, both the headlamp and tail lamp are LED units. Q: What type of brakes does GIxxer SF have? A: It uses disc brakes at the front and rear. Q: Is GIxxer SF suitable for daily commuting? A: Yes, its light weight, refined engine, and comfortable riding posture make it ideal for daily city use. |
| Fuel System | — | Fuel Injection |
| Price Variants | | 475000 | STD | 135129 Special Edition | 135590 |
| 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. | The 155 cc engine is smooth and predictable, making it ideal for city rides and daily commuting. Lightweight build and manageable kerb weight make it easy to maneuver in traffic or tight spaces. Comfortable seat height and posture - accessible for many riders, and practical for regular use. Suspension setup strikes a balance between absorbing bumps and providing stable handling over varying roads. Disc brakes with ABS add good stopping power and safer braking performance in unexpected situations. LED lighting and tubeless tyres add modern practicality and convenience. Good fuel economy - efficient for frequent commuting and moderate-distance rides. |
| Starter | — | Self Start |
| Transmission | Manual | 5 Speed Manual |
