Quick Analysis
Aprilia SR 175
23.0 pts
Unweighted: 14 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
KTM 50 SX
13.0 pts
Unweighted: 9 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | Air‑cooled | — |
| Displacement | 174.7 cc | 49.9 cc |
| Engine Type | Single‑cylinder, 4‑stroke, SOHC, 3‑valve, air‑cooled. | 1-cylinder, 2-stroke engine |
| Power | 13.26 PS @ 7200 rpm | 5.3 bhp @ 11500 rpm |
| Torque | 14.14 Nm @ 6000 rpm | 5.2 Nm @ 7500 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 7 l | 2.3 L |
| Mileage | 40 kmpl | 30 kmpl |
Dimensions & Weight |
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| Kerb Weight | — | 41 kg |
| Seat Height | — | 653 mm |
Brakes & Suspension |
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| ABS | Single‑channel ABS | — |
| Front Brake | 220 mm disc | Disc 160 mm |
| Front Suspension | Telescopic front fork | XACT 35 WP Upside-Down fork, Ø 35 mm |
| Rear Brake | Drum brake | Disc 160 mm |
| Rear Suspension | Monoshock | XACT WP mono shock |
Tyres & Wheels |
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| Front Tyre | — | 60/100 - 12 |
| Rear Tyre | — | 2.75 - 10 |
| Tyre Type | Tubeless | Tubed |
| Wheel Type | Alloy | Spoke |
Features & Technology |
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| Headlight | LED | — |
Other Specifications |
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| Bike Image 1 | https://motoautiv.com/wp-content/uploads/2025/12/sr_tech_175_banner2.webp | — |
| Cluster | Digital | — |
| Color Options | GLOSSY TECH WHITE MATT PRISMATIC DARK | Electronic Orange |
| Cons | The seat is firm and somewhat compact, making long rides or carrying a pillion less comfortable. The suspension is on the stiffer side, so rough roads and potholes can feel more pronounced than on commuter-focused scooters. Fuel tank capacity and mileage limit long-range practicality; frequent refuelling may be required for longer rides. Storage space is limited, restricting the ability to carry larger items or helmets comfortably. Taller or heavier riders may find the riding posture and legroom slightly restrictive, especially for longer commutes. | 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. |
| Detailed Overview | Riding the SR 175 feels like having a sporty, eager two‑wheeler in the city — there’s a sense of liveliness from the moment you twist the throttle. Under the bodywork lies a 174.7 cc, single‑cylinder, 4‑stroke, SOHC engine with a 3‑valve head and air cooling. That combination, while simple, is tuned to deliver a perceptible boost over smaller scooters. At around 7,200 rpm you get roughly 13.08 bhp, and peak torque — about 14.14 Nm — comes in at around 6,000 rpm. What this means on real roads is a respectable surge whenever you open up, enough to confidently overtake slow traffic or merge into faster streams without riding the clutch or worrying about sluggishness. The power flows through a CVT automatic transmission. That’s a big plus for city traffic — no manual shifting, no clutch to juggle. Just smooth, progressive acceleration whether you’re crawling through congested lanes or zipping past green lights. For someone commuting daily, this ease of use adds up over time: less fatigue, easier handling, especially in stop‑and‑go conditions. Underneath, the SR 175 rides on a steel frame with a conventional telescopic front fork and a rear monoshock suspension. The wheels are 14-inch alloys with wide 120-section tyres, both front and rear. This setup gives the scooter a planted feel: the tyres provide good grip and stability even when you take scooter‑above‑average corner speeds for fun, or when roads are wet and unpredictable. The suspension isn’t plush — it leans a bit toward firm — but that firmness helps the SR 175 stay composed during quick direction changes or under heavier loads. Bumps and potholes will remind you it’s not a cruiser, but the ride remains useably controlled, balancing stability and comfort in everyday commuting conditions. Braking is handled via a 220 mm disc up front and a drum at the rear, with single‑channel ABS in place. That front disc gives dependable stopping power that’s more confidence‑inspiring than typical scooter brakes — useful when you need to brake suddenly in city traffic. The ABS (even single‑channel) is a welcome safety net for unpredictable urban roads, ensuring the front wheel doesn’t lock under hard braking. For most riders, this means decent control and peace of mind in mixed traffic conditions or when road surfaces are slippery. On the practical side, SR 175 brings a modern set of features that lift it up from a basic commuter — most notably a 5.5‑inch full‑colour TFT instrument cluster, with Bluetooth connectivity for phone pairing, call & message alerts, music control (if supported), and navigation‑assisted info. That makes daily rides more convenient and modern: you get clearer readouts, easier navigation checks, and the general feel of a premium machine rather than a bare‑bones scooter. LED lighting and a USB charging port add to that convenience, making the SR 175 more usable for longer commutes or rides after dark. As for ownership realities: in city traffic, the SR 175’s combination of reasonable power, smooth automatic transmission, and manageable size make it a practical commuter that still feels fun when you want some punch. It isn’t over‑powered — you won’t mistake it for a bike — but within its class, it offers a lively, engaging ride that’s more premium than many other scooters. Its tyre-and-wheel setup paired with solid braking and a stable chassis makes traffic weaving, quick lane‑changes, and urban overtakes more assured. For those occasional weekend rides or city-to-suburb runs it gives enough grunt to stay composed without feeling strained. If you routinely carry a pillion or luggage, the SR 175’s firm suspension and 14‑inch tyre‑based setup will give decent stability — though comfort will be a bit sporty, not plush. If your commute includes rough roads or potholes, you’ll feel the firmness, but it won’t be harsh enough to become unbearable. And for daily city‑use, it’s a good balance between practicality and sportiness: easy start, automatic transmission, modern features, and a refined engine that doesn’t demand frequent maintenance. | 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. |
| Expert Review | MotoAutiv Team | MotoAutiv Team |
| FAQ (Manual Override) | Q: What is the engine type? A: The engine is a single-cylinder, 4-stroke, SOHC, 3-valve, air-cooled engine. Q: What is the engine displacement? A: The displacement is 174.7 cc. Q: What is the power output? A: The power output is approximately 13.08 bhp at 7200 rpm. Q: What is the torque? A: The torque is about 14.14 Nm at 6000 rpm. Q: What is the mileage? A: The mileage is around 40 km/l. Q: What type of cooling system does it have? A: It has an air-cooled system. Q: What type of transmission does it use? A: The scooter comes with a CVT automatic transmission. Q: What type of fuel system does it have? A: It uses electronic fuel injection. Q: What are the front and rear brakes? A: The front brake is a 220 mm disc, and the rear brake is a drum. Q: Does it have ABS? A: Yes, it comes with single-channel ABS on variants equipped with it. Q: What is the front suspension? A: The front suspension is a telescopic fork. Q: What is the rear suspension? A: The rear suspension is a mono-shock absorber. Q: What are the tyre sizes? A: Both front and rear tyres are 120/70-14 tubeless on alloy wheels. Q: What type of wheels does it have? A: The scooter has 14-inch alloy wheels. Q: What is the kerb weight? A: The kerb weight is not officially published. Q: What is the seat height? A: The seat height is not officially published. Q: What is the fuel tank capacity? A: The fuel tank capacity is 7 litres. Q: What type of headlight does it have? A: The scooter comes with a LED headlight. Q: What type of starter does it have? A: It has an electric start. Q: What type of instrument cluster does it have? A: It has a full-colour TFT digital cluster with features like Bluetooth connectivity, navigation support, and call/message alerts. Q: Is the Aprilia SR 175 suitable for city commuting? A: Yes, its combination of automatic transmission, stable handling, and responsive engine makes it excellent for urban traffic. Q: Does it have under-seat storage? A: Yes, it offers practical under-seat storage, suitable for a helmet or small items. | 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 |
| Fuel System | Electronic fuel injection | — |
| Price Variants | 175 hp e | hp e Replica | | | 475000 |
| Pros | The SR 175 delivers strong and responsive performance, making city commuting and occasional highway bursts lively and fun. It has a sporty, aggressive design that stands out, giving it a premium and performance-focused look compared with regular scooters. Handling feels confident thanks to 14-inch alloy wheels, wide tyres, and firm suspension, making it stable in corners and during quick lane changes. Front disc brake with ABS provides good stopping power and enhances rider confidence in traffic or sudden braking situations. Modern features like a full-colour TFT instrument cluster, LED lighting, and Bluetooth connectivity make the riding experience convenient and contemporary. | 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. |
| Starter | Electric | — |
| Transmission | Automatic | Manual |
