Quick Analysis
Aprilia SXR 125
31.5 pts
Unweighted: 24 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
KTM 50 SX
8.5 pts
Unweighted: 4 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
||
| Cooling System | Air‑cooled | — |
| Displacement | 125 cc (exactly 124.45 cc) | 49.9 cc |
| Engine Type | Single‑cylinder, 4‑stroke, SOHC, 3‑valve, air‑cooled. | 1-cylinder, 2-stroke engine |
| Power | 9.61 PS @ 7500 rpm | 5.3 bhp @ 11500 rpm |
| Torque | 10.19 Nm @ 5400 rpm | 5.2 Nm @ 7500 rpm |
Performance & Efficiency |
||
| Fuel Tank Capacity | 7 l | 2.3 L |
| Mileage | 40 kmpl | 30 kmpl |
Dimensions & Weight |
||
| Kerb Weight | 129 | 41 kg |
| Seat Height | 775 mm | 653 mm |
Brakes & Suspension |
||
| ABS | Yes | — |
| Front Brake | 220 mm disc brake | Disc 160 mm |
| Front Suspension | Hydraulic double‑telescopic fork | XACT 35 WP Upside-Down fork, Ø 35 mm |
| Rear Brake | 140 mm drum brake | Disc 160 mm |
| Rear Suspension | Hydraulic shock absorber | XACT WP mono shock |
Tyres & Wheels |
||
| Front Tyre | 120/70‑12 | 60/100 - 12 |
| Rear Tyre | 120/70‑12 | 2.75 - 10 |
| Tyre Type | Tubeless | Tubed |
| Wheel Type | Alloy | Spoke |
Features & Technology |
||
| Headlight | LED | — |
Other Specifications |
||
| Battery | 12 V, 5 Ah | — |
| Bike Image 1 | https://motoautiv.com/wp-content/uploads/2025/12/aprilia_sxr_125_inner_banner_black-scaled.webp | — |
| Bike Image 2 | https://motoautiv.com/wp-content/uploads/2025/12/aprilia_sxr_125_inner_banner_white-scaled.webp | — |
| Bike Image 3 | https://motoautiv.com/wp-content/uploads/2025/12/aprilia_sxr_125_inner_banner_blue-scaled.webp | — |
| Cluster | Fully digital, LCD | — |
| Color Options | VIBRANT BLUE |#0479cc ESSENCE WHITE|#fafaf7 ENIGMA BLACK|#000000 POWER RED|#f2180c | Electronic Orange |
| Cons | The suspension can feel a bit firm, transmitting bumps from rough roads more noticeably. Fuel tank capacity and mileage are modest, which may limit long-distance rides without refueling. Service network and spare-part availability may be limited in smaller towns or rural areas. The price is higher than many other 125 cc scooters, which may not feel justified for all buyers. Ride comfort with a pillion or on uneven roads can feel less plush compared to softer-suspension scooters. | 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 SXR 125 feels like getting the practicality of a scooter with a bit of Italian flair and some thoughtful engineering under the sheet metal. Its heart is a 124.45 cc, single‑cylinder, 4‑stroke, SOHC engine — simple, air‑cooled and fuel‑injected — which gives a modest but reliable amount of power. On paper it makes around 9.6 PS at about 7,500 rpm and about 10.2 Nm of torque at around 5,400 rpm. In everyday traffic and city commutes, that translates into smooth, manageable acceleration: not a rocket, but enough to merge confidently into traffic, overtake slower vehicles, or cruise through busy streets without feeling underpowered. The automatic CVT transmission with belt drive and dry centrifugal clutch adds to that convenience — you don’t worry about shifting gears, you just twist the throttle and the scooter takes care of the rest, which makes daily stop‑and‑go riding effortless. What stands out is how the scooter balances its compact design with comfort and practicality. The frame is a tubular single‑cradle chassis, with a hydraulic double‑telescopic fork up front and a hydraulic shock absorber at the rear. Coupled with 12‑inch alloy wheels wrapped in 120/70‑12 tubeless tyres front and rear, the suspension‑tyre set‑up gives the SXR 125 a stable and planted feel for a 125 cc scooter. On good roads it rides with composure — not floaty, but controlled and predictable. On rough patches, broken tarmac or potholes, the ride can feel a bit firm, but that firmness also helps the scooter stay stable under load or when cornering. It’s a practical compromise between comfort and handling. When it comes to braking and safety, Aprilia opted for a 220 mm front disc brake and a 140 mm rear drum brake, linked by a Combi Braking System (CBS). That front disc gives reassuring bite, and the CBS helps distribute braking force to ensure stability when you need to stop quickly — useful in chaotic city traffic or when a pedestrian or vehicle suddenly crosses your path. While it doesn’t offer dual‑disc or ABS, the braking setup is decent for the scooter’s performance envelope and gives enough confidence for everyday use. Dimensionally, the SXR 125 strikes a balance between being compact enough for narrow lanes and roomy enough for comfortable rides. The length is about 1,963 mm, width about 803 mm and height about 1,205 mm, with a wheelbase of 1,361 mm. Seat height sits around 775–780 mm, which tends to be manageable for most riders, making it easy to flat‑foot at signals or in traffic. The kerb weight is roughly 128–129 kg — light enough for easy manoeuvring in tight traffic or parking spots, but with enough heft to feel stable at moderate speeds or when carrying a pillion. Fuel tank capacity is 7 litres (with a small reserve), which might sound small, but given the scooter’s modest engine and claimed fuel efficiency of about 40 km/l (actual mileage depends on riding style and traffic), a full tank still gives you a decent city‑range before needing a refill — handy for daily commuting or short errands. Aprilia has entrusted the SXR 125 with a set of practical yet modern features that make ownership smoother. The instrument console is fully digital, showing speed, fuel level, trip‑meter/odometer, and low‑fuel warning. There’s a USB charging port for devices — thoughtful if you rely on your phone for navigation or music — and other useful touches like a passenger footrest, grab‑rail and under‑seat storage that can fit daily‑use items. Lighting is all LED (headlight, tail / indicators), improving visibility during night rides and giving the scooter a more premium appearance. Starting is via both electric self‑start and kick‑start, which adds flexibility and reliability, especially in city conditions or if the battery is low. In real riding conditions, the SXR 125 feels like a practical, everyday machine that doesn’t ask for much from the rider. It’s easy to live with — easy to ride, easy to park, and easy to maintain. For a rider doing daily commuting, office runs, college rides or city errands, it covers the essentials: smooth engine, manageable power, stable handling, reliable brakes, decent fuel economy, and comfort. What you lose in high-speed grunt or heavy-duty touring capability, you gain in convenience, simplicity, and urban friendliness. If you’re someone riding through congested roads, tight parking spots, mixed-quality streets — perhaps overlapping with the kind of roads and traffic you’d find in many Indian cities — the SXR 125 feels well-suited. It doesn’t pretend to be a sports bike, but it offers a balanced package: easy to ride, practical to use, and dependable enough for daily use, with a bit of European styling and feature-level polish to make it stand out in the scooter crowd. | 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 | Aprilia SXR 125 has striking maxi-scooter styling and excellent high-speed stability, but is frequently criticized for its stiff suspension, sluggish initial acceleration, and high price compared to feature-rich rivals., 3.5, 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 unit. Q: What is the engine displacement? A: The displacement is 124.45 cc. Q: What is the power output? A: The power output is approximately 9.61 PS at 7,500 rpm. Q: What is the torque? A: The torque is about 10.19 Nm at 5,400 rpm. Q: What is the mileage? A: The mileage is around 40 km/l, depending on riding style and conditions. 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 an automatic CVT. Q: What type of fuel system does it have? A: It uses electronic fuel injection with petrol. Q: What are the front and rear brakes? A: The front brake is a 220 mm disc, and the rear brake is a 140 mm drum. Q: Does it have ABS? A: It has a Combined Braking System (CBS), not ABS. Q: What is the front suspension? A: The front suspension is a hydraulic double-telescopic fork. Q: What is the rear suspension? A: The rear suspension is a hydraulic shock absorber. Q: What are the tyre sizes? A: Both front and rear tyres are 120/70-12, tubeless. Q: What type of wheels does it have? A: The scooter has 12-inch alloy wheels. Q: What is the kerb weight? A: The kerb weight is approximately 129 kg. Q: What is the seat height? A: The seat height is 775 mm. 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 an LED headlight, and the tail/indicator lights are also LED. Q: What type of starter does it have? A: It has both electric and kick start. Q: What type of instrument cluster does it have? A: It has a fully digital instrument panel displaying speed, fuel level, trip meter/odometer, and low-fuel warning. Q: Is the Aprilia SXR 125 suitable for city commuting? A: Yes, its compact size, automatic transmission, and manageable power make it ideal for urban traffic. Q: Does it have under-seat storage? A: Yes, there is under-seat storage for small items or a helmet. Q: Are there any charging options for devices? A: Some variants come with a USB charging port for phones or devices. | 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 | Petrol + Electronic fuel injection | — |
| Price Variants | | 122642 | | 475000 |
| Pros | The SXR 125 has a bold, muscular design that stands out on the road and gives it a premium look. Its engine and CVT setup deliver smooth, reliable performance for city commuting, handling stop-and-go traffic with ease. The handling feels stable and composed, with a chassis and tyre setup that keeps the scooter planted even at moderate speeds. Front disc and CBS rear braking provide confidence-inspiring stopping power in urban traffic conditions. Comfortable riding posture with a seat height that suits most riders, making it easier to ride for longer periods. The build quality and finish feel more premium than typical scooters, giving a sense of durability. | 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 | Kick + Electric | — |
| Transmission | Automatic | Manual |
