Quick Analysis
KTM 50 SX
20.0 pts
Unweighted: 9 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
OLA S1 Pro +
14.5 pts
Unweighted: 17 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | air-cooled |
| Displacement | 49.9 cc | — |
| Engine Type | 1-cylinder, 2-stroke engine | — |
| Power | 5.3 bhp @ 11500 rpm | 13 kW |
| Torque | 5.2 Nm @ 7500 rpm | 58 Nm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | — |
| Mileage | 30 kmpl | — |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 116 kg |
| Seat Height | 653 mm | 791 mm |
Brakes & Suspension |
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| ABS | — | Dual Channel |
| Front Brake | Disc 160 mm | Disc |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | Twin telescopic fork |
| Rear Brake | Disc 160 mm | Disc |
| Rear Suspension | XACT WP mono shock | Mono-shock |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 90/90-12 |
| Rear Tyre | 2.75 - 10 | 90/90-12 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Steel |
Features & Technology |
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| Headlight | — | LED |
Other Specifications |
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| Battery Capacity (kWh) | — | 3.8 |
| Battery Chemistry | — | Li-ion |
| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/12/s1proporcelainwhite.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/12/s1projetblack.webp |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2025/12/s1prostellarblue.webp |
| Bike Image 4 | — | https://motoautiv.com/wp-content/uploads/2025/12/s1promidnightblue.webp |
| Bike Image 5 | — | https://motoautiv.com/wp-content/uploads/2025/12/s1proindustrialsilver.webp |
| Cluster | — | 7-inch touchscreen digital display |
| Color Options | Electronic Orange | Porcelain White Midnight Blue Passion Red Industrial Silver Stellar Blue Jet Black |
| 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. | Real-world range & performance may fall short of claims: In practical riding conditions (traffic, load, frequent stops), the actual usable range tends to drop compared to ideal numbers. Heavier weight and slightly less agility: Compared to lighter scooters, maneuvering at very low speed or parking in tight spaces may feel a bit more effortful. Charging demands planning: Full charging (especially for larger battery variants) takes considerable time, which may be a hassle if you don’t have regular access to a charger. Dependence on software/features: With many smart/connected features, any software glitch or sensor issue may affect usability (some users report occasional problems). Premium-ish cost: Compared with entry-level two-wheelers, the price is higher — so it’s an investment more aligned with long-term savings than cheap entry-level commuting. |
| 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 S1 Pro+ feels like a concrete statement from its maker: this isn’t just a city-runaround, but a serious electric scooter for riders who want performance, range, and smart convenience wrapped into one. Under its sleek bodywork lies a fairly powerful mid-drive motor that puts out around 13 kW at peak, giving the scooter a punch that’s well beyond what entry-level EVs deliver. With the larger 5.3 kWh battery pack, you get claimed top speed of about 141 km/h — enough for overtaking, commuting on faster roads, or even occasional longer rides outside town. That kind of speed potential makes it more practical than many small-scooters, especially if you want versatility beyond city speeds. Acceleration is sharp: the S1 Pro+ can reportedly reach 0–40 km/h in around 2.1 seconds with the big battery — that’s brisk enough to give you confidence at traffic lights or when pulling out into busy roads. Even the smaller 4 kWh version isn’t sluggish, though its top speed and range are a notch down. As a result, whether you’re darting through urban lanes, merging into highway traffic, or just doing daily errands, the ride feels responsive rather than sluggish. Range, often the sticking point for EV scooters, is a major highlight here — at least on paper. The bigger 5.3 kWh pack is rated for an IDC-certified 320 km on a full charge; the 4 kWh variant is rated about 242 km. For many daily commuters, that means you can potentially go a week or more without plugging in — convenient if you don’t ride every day or don’t have frequent access to charging. That battery headroom also gives freedom for occasional longer rides beyond just neighbourhood commute. Charging time is reasonable too: the smaller battery needs under 5 hours for 0–80%, while the big battery takes longer but remains manageable overnight. Ride quality and comfort seem well considered. The scooter rides on a tubular steel frame with a telescopic front suspension and mono-shock rear — a setup that balances stability, ride comfort, and practicality. Ground clearance is decent and the seat height is manageable for many riders, making it doable even for those who are not very tall. A bonus is under-seat storage of about 34 litres — handy for helmets, groceries or daily essentials — adding practicality beyond just transport. On the features front, the S1 Pro+ doesn’t disappoint. It gets a 7-inch touchscreen display which handles speed, battery, ride modes and more; there’s keyless start, LED lighting, and modern conveniences like ride modes (Hyper, Sport, Normal, Eco), regenerative braking, reverse assist, and smartphone connectivity for navigation, alerts and over-the-air updates. For someone used to traditional petrol scooters, this elevates the daily riding experience — you get smart-bike feels without the fuss of gears or constant maintenance. From a user perspective, S1 Pro+ thus aims to deliver a “next-gen scooter” feeling: fast enough for city + suburban commuting, rangy enough for occasional long runs, and feature-rich enough to feel modern and tech-ready. It’s not a stripped-down budget EV — it asks for a higher price — but it gives back a lot: speed, flexibility, convenience, and lower running costs (no petrol, lower maintenance). That said, some reality checks apply: real-world range will vary a lot depending on speed, haul (pillion or luggage), terrain and how aggressively you ride. For rough roads or heavy load, the suspension might feel firm. And while the top-end variant promises a 320 km range, actual daily use might deliver less — expect variation. Also, to get the most out of the scooter (range, performance), having access to regular charging infrastructure helps. In short, if you’re someone who wants to shift to electric but isn’t ready to compromise on performance or convenience, the S1 Pro+ stands out. It offers a compelling package: brisk acceleration, long-ish range, smart features, and the simplicity of an electric drivetrain — making it a very solid choice for modern commuting, especially if you ride in city/regional mix and occasionally travel a bit farther. |
| 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 battery options does Ola S1 Pro+ offer? A: Ola S1 Pro+ comes with two battery-pack options: 4.0 kWh and 5.3 kWh. Q: What is the claimed range per full charge? A: The 4.0 kWh version has a claimed range of 242 km, while the 5.3 kWh version is rated for up to 320 km (IDC). Q: What motor power does the S1 Pro+ use? A: It uses a 13 kW peak-power mid-drive motor. Q: What is the top speed of the S1 Pro+? A: The top speed is claimed to be 128 km/h for the 4.0 kWh variant, and 141 km/h for the 5.3 kWh variant. Q: How quick is its acceleration (0–40 km/h)? A: The 4.0 kWh variant does 0–40 km/h in about 2.3 seconds, and the 5.3 kWh version in around 2.1 seconds. Q: What kind of braking and wheels does it have? A: The S1 Pro+ comes with disc brakes on both front and rear, and features dual-channel ABS. Wheels are 12-inch alloy with tubeless tyres. Q: What kind of suspension and frame setup does it use? A: It uses a tubular/ sheet-metal frame, with twin-telescopic front suspension and a mono-shock at the rear. Q: What modern/electronic features does it offer? A: The scooter has a 7-inch touchscreen display, supports ride modes (Hyper, Sports, Normal, Eco), has reverse-mode assist, regenerative braking, onboard navigation & smartphone connectivity, LED lighting, and other convenience/smart-scooter features. Q: What are the charging times for the battery? A: For the 4.0 kWh variant, 0–80% charging takes about 4 hours 50 minutes; for the 5.3 kWh variant charging time to 80% is about 7 hours. Q: What is the under-seat storage capacity and practical ergonomics? A: It provides around 34 litres of under-seat storage. Seat-height and overall ergonomics are tuned for urban use, making it relatively easy to ride and park in city traffic. |
| Fuel System | — | Electric |
| Price Variants | | 475000 | Pro + | 154999 Pro | 124999 |
| 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. | Smooth, strong performance: Its motor and battery setup deliver brisk acceleration and enough pick-up to handle city traffic confidently. Long-ish real-world usability: For daily commuting or repeated short‐to-medium rides, its battery and range (especially in real-use conditions) give decent convenience without constant charging. Good stability and handling: With wider tyres, dual-disc or good braking setup and stable chassis/suspension, it offers better grip and ride feel compared to many basic scooters. Feature-rich & technologically up-to-date: Smart features, digital display and modern ergonomics add convenience and a “modern EV scooter” feel rather than being just a basic vehicle. Savings on running cost: Being electric reduces fuel cost and maintenance burden compared to petrol scooters, which can matter a lot over time. |
| Transmission | Manual | Automatic ( |
