Quick Analysis
KTM 50 SX
22.5 pts
Unweighted: 9 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
OLA Roadster X
11.0 pts
Unweighted: 15 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Displacement | 49.9 cc | — |
| Engine Type | 1-cylinder, 2-stroke engine | — |
| Power | 5.3 bhp @ 11500 rpm | 7 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 | 127 kg |
| Seat Height | 653 mm | 777 mm |
Brakes & Suspension |
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| Front Brake | Disc 160 mm | Drum 2 Piston Brake by Wire |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | Telescopic Fork |
| Rear Brake | Disc 160 mm | Drum |
| Rear Suspension | XACT WP mono shock | Twin Shock Absorbers |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 80/100 - 18 |
| Rear Tyre | 2.75 - 10 | 100/90 - 17 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Features & Technology |
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| Headlight | — | LED |
Other Specifications |
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| Battery Capacity (kWh) | — | 2.5 |
| Battery Chemistry | — | Li-ion |
| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/12/roadsterxplusindustrialsilver-1.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/12/roadsterxplusstellarblue-1.webp |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2025/12/roadsterxplusceramicwhite-1.webp |
| Charging Time (Fast) | — | 5.9 h |
| Color Options | Electronic Orange | Ceramic White Metallic Black Pine Green Industrial Silver Stellar Blue |
| 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. | Range figures are optimistic and real-world numbers may be significantly lower depending on riding style. Absence of dual-channel ABS on all variants could be a drawback for safety-focused buyers. Charging times can feel long if you do not have access to fast-charging infrastructure. Rear twin-shock suspension may feel firm for lighter riders on bad roads. Limited storage space compared to some EV scooters and urban-focused EVs. Fit and finish may vary between batches since the model lineup is very new. Battery degradation over years is still an unknown factor for early buyers. |
| 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. | Riding the Roadster X feels like stepping into the future of everyday two-wheeler transport — silent, zippy, and stripped of the familiar fuss of fuel, gears, and choke. At its heart lies an electric mid-drive motor that quietly transforms the usual “kick-start, wait and roar” ritual into “plug in, twist throttle, go.” Depending on which battery pack you go for, the Roadster X offers a mix of convenience and versatility. Variants come with battery capacities such as 2.5 kWh, 3.5 kWh, 4.5 kWh — and at the top end under the “Roadster X+” badge, there’s an option with a beefy 9.1 kWh pack. For a regular 4.5 kWh build, the motor delivers about 7 kW of power, producing sufficient torque to handle city traffic and suburban roads with ease. On the more powerful 9.1 kWh + 11 kW variant, punch increases noticeably — you get brisk acceleration, and the scooter feels more alive when you twist the throttle. In fact, the top-end version claims a 0–40 km/h sprint in around 2.7 seconds, which is enough to feel lively when pulling out into traffic or overtaking slower vehicles. The top speed of the more powerful variant is around 125 km/h — not just “scooter- slow,” but enough for comfortable highway cruising when roads are decent (and legal). Range is one of the parts where Roadster X tries to impress. With the 4.5 kWh battery, a claimed “IDC” range hovers around 252 km. With the 9.1 kWh battery, the company goes so far as to quote up to 501 km on a full charge. That’s a headline number that would make any commuter hopeful — in real-world riding, especially city commutes with frequent start-stops or occasional highway stretches, you’ll likely get lower. But the big battery still gives you breathing room: occasional long rides, fewer charging stops, and a sense of freedom without obsessing over where the next plug point is. On roads — especially the sometimes rough, uneven roads of many Indian towns and cities — the Roadster X is set up thoughtfully. It uses a traditional telescopic front fork and twin-shock rear suspension, a tried-and-tested combo that balances comfort and stability. In everyday riding — potholes, speed-breakers, unpredictable patches — this setup might not feel like a plush cruiser, but it tends to handle typical urban/suburban unevenness without harshness. The frame — a double-cradle steel chassis built for strength — helps maintain composure, even when roads get unpredictable. Maneuverability is key in daily commuting and tight traffic, and Roadster X is more nimble than bulky bikes. Its dimensions (wheelbase, saddle height, overall width) give it relative agility compared to bigger motorcycles. The weight is modest enough that dipping through traffic, parking, or navigating narrow lanes doesn’t demand excessive effort. In a place with mixed traffic — scooters, bicycles, pedestrians, rickshaws — this translates to easier life. Stopping and safety – often underrated — get decent attention. The higher variants come with a front disc brake (plus rear drum), and a “brake-by-wire” system that, paired with what the designers intended, blends mechanical and regenerative braking intelligently. For city speeds, that gives enough braking bite and some confidence in sudden stops or unpredictable traffic movement. On the user-experience and convenience front, Roadster X feels modern. The instrumentation is a 4.3-inch colour LCD display — clean, digital, and likely easier to read than older analog-plus-LED clusters. There are selectable ride-modes: Eco, Normal, and Sports — letting you prioritize efficiency, balanced riding, or performance depending on mood or road. It supports smart features: connectivity via app, ability to locate charging stations, energy-insight readouts (helpful to track how your riding style affects range), and even reverse-assist (rare for two-wheelers, and useful when maneuvering in tight parking spots). On-board LEDs for headlamp and taillight + tubeless alloy wheels add to modern EV-two-wheeler sensibility. For folks thinking about cost — one of the main reasons people look at electric bikes — Roadster X tries to keep things reasonable. The entry-level variant starts at a base ex-showroom price that’s very competitive compared to many internal-combustion bikes, while the higher variants offer a compelling value if you plan to ride regularly and cover good km. For someone commuting daily, doing errands, or even occasional longer rides — especially if fuel and maintenance costs matter — Roadster X presents a tempting proposition of “silent, no-fuss, and economical as long as you have access to charging.” Riding the Roadster X in real life, you’d likely notice a few things. Around town with mixed-speed traffic and lots of stops, the instant torque and smooth power delivery make riding almost effortless — no gear shifts, no vibrations, no noise. Traffic lights, roundabouts, slow-moving vehicles: you glide through them without the jerks or lurches typical of small-petrol bikes. On decent stretches of road or highway, the top-end variant opens up, allowing confident overtakes and stable cruising. Of course, it’s not a luxury or premium superbike — but that’s not its aim. What it aims for — and largely delivers — is a practical, cost-efficient electric commuter/mobility bike that gives you the freedom to move without worrying much about fuel, frequent maintenance, or noise. For city dwellers, young riders, daily commuters, or people wanting a sensible transition toward electric two-wheelers, Roadster X could well represent the “sweet spot.” |
| 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 are available? A: Roadster X comes with 2.5 kWh, 3.5 kWh, 4.5 kWh, and for the top-end “Roadster X+” also a 9.1 kWh battery option. Q: What is the motor power? A: The standard variants get a 7 kW motor, whereas the top-end Roadster X+ uses an 11 kW motor. Q: What range can I expect per full charge? A: Depending on the variant: up to about 252 km with the 4.5 kWh battery, and up to 501 km with the 9.1 kWh battery (as claimed). Q: What is the top speed? A: The top speed varies: lower-capacity variants are rated around 105–118 km/h; the top-end variant claims up to 125 km/h. Q: What is the acceleration (0–40 km/h)? A: For entry-level battery versions it’s around 3.4 seconds; for higher battery/motor versions it drops to about 3.1 seconds; the top-end variant does 0–40 km/h in about 2.7 seconds. Q: What kind of display and electronics does it have? A: It features a 4.3-inch colour LCD display powered by the company’s software (MoveOS 5), and supports features like ride-modes (Eco/Normal/Sport), navigation, advanced regenerative braking, cruise-control, tyre-pressure monitoring, over-the-air updates, and app connectivity. Q: What kind of suspension and chassis does it use? A: Front suspension is telescopic fork, rear uses twin-shock adjustable rear suspension; chassis is built on a sturdy double-cradle steel frame for torsional rigidity. Q: What are the brakes and tyre specifications? A: It uses a front disc brake (on certain variants) along with brake-by-wire + regenerative braking. Wheels are alloy with tubeless tyres. Q: What is the approximate kerb weight and ground clearance (for 4.5 kWh variant)? A: Kerb weight is about 130.7 kg and ground clearance is around 180 mm. Q: What is the ex-showroom price range? A: Entry-level versions start around ₹74,999, mid variants about ₹84,999, and higher variants around ₹99,999 (ex-showroom). |
| Fuel System | — | Electric |
| Price Variants | | 475000 | X+ | 189999 X | 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. | Offers multiple battery options, letting buyers choose between affordability and long-range practicality. Strong motor performance, especially on the higher variants, giving quick acceleration and confident highway cruising. Modern, muscular street-bike design that stands out among commuter EV motorcycles. Smooth ride quality thanks to a stable double-cradle frame and well-tuned suspension setup. Regenerative braking adds extra range and reduces brake-wear in city traffic. Packed with features like ride modes, cruise control, navigation, and app connectivity. Good ground clearance for Indian road conditions. Relatively lightweight for an electric motorcycle, making it easy to handle in daily commuting. Competitive pricing for the hardware and features provided. |
| Transmission | Manual | Automatic |
