Quick Analysis
KTM 85 SX
5.0 pts
Unweighted: 4 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
Aprilia RS 457
30.5 pts
Unweighted: 23 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | Liquid Cooled | Liquid-cooled |
| Displacement | 84.9 cc | 457 cc |
| Engine Type | 1-cylinder, 2-stroke engine | 2 parallel forward-facing cylinders, 4 valves per cylinder |
| Power | 15.5 bhp @ 11500 rpm | 47.6 PS (≈ 35 kW) at 9,400 rpm |
| Torque | 14 Nm @ 8500 rpm | 43.5 Nm at 6,700 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 5.2 L | 13L |
| Mileage | 25 kmpl | 30 kmpl |
Dimensions & Weight |
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| Kerb Weight | approx. 67 kg (without fuel) | 175 |
| Seat Height | 865 mm | 800 |
Brakes & Suspension |
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| ABS | — | Dual Channel |
| Front Brake | Disc 240 mm | Disc 320 mm 4 Piston |
| Front Suspension | XACT 43 WP Upside-Down fork, Ø 43 mm | 41mm upside-down fork, adjustable preload, 120mm travel |
| Rear Brake | Disc 220 mm | Disc 220 mm 1 Piston |
| Rear Suspension | XACT WP PDS mono shock | Monoshock, adjustable preload, 130 mm wheel travel |
Tyres & Wheels |
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| Front Tyre | 70/100 - 17 | 110/70 - 17 |
| Rear Tyre | 90/100 - 14 | 150/60 - 17 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Features & Technology |
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| Headlight | — | LED |
Other Specifications |
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| Battery | — | 12v MF |
| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2026/04/Prismatic-Dark.avif |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2026/04/Opalescent-light.avif |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2026/04/GP-Replica.avif |
| Bike Image 4 | — | https://motoautiv.com/wp-content/uploads/2026/04/Coral-Snake-blue.avif |
| Bike Image 5 | — | https://motoautiv.com/wp-content/uploads/2026/04/Arsenic-yellow.avif |
| Color Options | Orange | #F2771A | Racing Stripes | #0F0F10, #C1121F Prismatic Dark | #1C1C1E, #6E6E73 Opalescent Light | #F5F5F5 GP Replica | #0B0B0C, #5A2CA0 Coral Snake blue | #1F3A93, #C1121F Arsenic yellow | #D4AF37, #6E6E73 |
| Cons | Not road legal and suitable only for off-road tracks. High maintenance due to 2-stroke engine rebuilds. Kick-start only, no electric start option. Relatively expensive compared to other youth dirt bikes. Small fuel tank limits long riding sessions. | Seat height is a bit tall, may be challenging for shorter riders to place feet flat at stops. Mileage tends to be modest (around 30–35 kmpl), especially if ridden hard not ideal for those seeking fuel economy. Fuel tank capacity is moderate may require frequent refuelling on long rides or at high speeds. You'll need regular maintenance (for twin-cylinder engine, etc.) more involved than simple commuter bikes. Riding posture and engine character lean sporty less relaxed comfort compared to cruiser-style bikes or scooters. Insurance, maintenance, and running costs will be higher compared to smaller, entry-level bikes. |
| Detailed Overview | The KTM 85 SX is one of the most popular and respected youth motocross bikes in the world, designed specifically for young riders who are ready to take the next big step toward competitive racing. More than just a beginner’s off-road bike, the 85 SX brings true race-bred DNA from KTM’s full-size SX lineup, giving upcoming racers the opportunity to experience high-level performance at an early age. With its sharp power delivery, lightweight design, and premium components, the bike is built to help young riders improve skills and confidently tackle motocross tracks. At the heart of the KTM 85 SX lies its 84.9cc 2-stroke, liquid-cooled engine, which is known for delivering punchy power and rapid acceleration. The powervalve system ensures that the engine produces strong torque across the rev range, making the bike easier to control while still offering impressive performance. Whether riders are attacking tight corners or hitting long straights, the engine responds crisply and delivers the thrilling character 2-strokes are known for. Paired with a 6-speed gearbox, the bike offers smooth shifting and plenty of flexibility for both beginners and experienced youth racers. One of the standout features of the 85 SX is its lightweight chassis, made with high-strength chromoly steel. This frame not only enhances stability but also ensures precise handling, allowing riders to maneuver confidently through jumps, whoops, and rough terrain. The ergonomics are thoughtfully designed to fit young riders, offering a slim body that allows easy movement, better grip, and improved control during aggressive riding. Suspension is another area where KTM excels, and the 85 SX is no exception. It comes equipped with WP XACT suspension, featuring an AER air fork at the front and a fully adjustable shock absorber at the rear. This setup provides excellent damping, great response on jumps, and impressive support on uneven surfaces. Riders can also fine-tune the suspension to match their weight, riding style, and track conditions — something rarely seen in youth motocross bikes. The bike also features powerful disc brakes on both ends, giving young riders the confidence to brake hard into corners. The wave-style discs help with heat dissipation, which is especially important during long practice sessions or competitive races. Lightweight wheels, grippy motocross tyres, and a race-focused design further enhance the overall performance package. In terms of ergonomics, the KTM 85 SX is designed to feel like a miniature version of the bigger SX bikes. The seat height, handlebar position, and narrow bodywork all work together to provide comfort while promoting proper riding posture. This allows young riders to develop good habits early in their riding journey. Overall, the KTM 85 SX is a bike built for serious young racers who want real performance, durability, and race-ready features. With its responsive engine, excellent suspension, strong brakes, and lightweight build, it stands out as one of the top choices in the youth motocross segment. Whether used for training or competition, the 85 SX gives riders a true taste of professional motocross performance. | The Aprilia RS 457 is a fully faired motorcycle built around a 457cc parallel-twin engine. This engine produces around 47 PS of power and 43.5 Nm of torque, and it uses liquid cooling to maintain stable temperatures during regular riding. The engine is paired with a 6-speed gearbox, and the overall power delivery is designed to be smooth and predictable, which helps riders manage it in both city and highway conditions. The bike also comes with ride-by-wire throttle, which allows different riding modes to adjust how the engine responds. In terms of design, the RS 457 follows a typical supersport layout with a full fairing, a sharp front section, and a slightly aggressive riding posture. The aluminium frame helps keep the overall weight low, with a kerb weight of around 175 kg. The fuel tank capacity is about 13 litres, which is practical for daily use as well as weekend rides. The seat height is around 800 mm, making it accessible for a wide range of riders, although the forward-leaning position may take some getting used to. The suspension setup includes upside-down front forks and a rear monoshock, both tuned to provide stability at higher speeds. The setup leans slightly towards the firmer side, which can make bumps and uneven roads more noticeable, especially on typical Indian road conditions. The braking system includes a front disc and a rear disc, supported by dual-channel ABS, which helps maintain control during braking. The bike also uses wide radial tyres that offer grip in different riding situations. The Aprilia RS 457 comes with a modern electronics package that includes traction control and multiple riding modes. These features adjust parameters like throttle response to suit different riding conditions. All important information is displayed on a digital TFT screen, which shows speed, gear position, fuel level, and other details in a clear format. Some variants also offer a quickshifter as an option, allowing clutchless gear changes. The riding position is slightly committed, with clip-on handlebars and rear-set foot pegs, which gives it a sporty feel. At the same time, the overall size and weight make it manageable compared to larger supersport bikes. The bike is designed to offer a balance between performance and everyday usability, although factors like traffic conditions, road quality, and riding style will influence how it feels in regular use in India. |
| Expert Review | The KTM 85 SX is a small motocross bike built mainly for young riders who are moving up from smaller machines. It uses an 85cc two-stroke engine that feels quick and lively, especially in the mid to high rev range, but it does require regular gear shifting to keep it in the power band. The lightweight frame and compact size make it easy to handle on dirt tracks, and it feels agile while taking corners or jumps. The suspension setup is firm and designed for racing conditions, so it works well on rough tracks but can feel a bit stiff on slower or uneven surfaces. Braking performance is sharp and responsive, which helps in controlling speed during aggressive riding. Since it is a performance-focused dirt bike, it needs frequent maintenance compared to regular bikes, especially because of the two-stroke engine. Overall, the KTM 85 SX is focused on track use, with a strong emphasis on performance, handling, and control for riders who are still developing their skills., 4.0, MotoAutiv Team | The Aprilia RS 457 fits into the entry-level performance segment in India, where many riders are moving from smaller bikes to higher capacity machines. Its 457cc twin-cylinder engine feels smooth and manageable, but in daily city traffic, the riding posture and heat can still be noticeable. The suspension and chassis are set up for sporty riding, which means rough roads may feel slightly uncomfortable. It also comes with modern electronics that may take some time for new riders to fully understand. The service network is still growing, which can affect ownership experience in some cities. It is more suited for riders looking for performance-oriented riding rather than regular commuting., 4.1, MotoAutiv Team |
| FAQ (Manual Override) | Q: What is the mileage? A: The mileage is around 18–20 kmpl (may vary as it’s an off-road motocross bike). Q: Is the KTM 85 SX road legal? A: No, it is a pure motocross bike meant only for off-road track use and cannot be registered for road riding. Q: What type of engine does the KTM 85 SX have? A: It uses an 85cc, liquid-cooled, two-stroke engine. Q: Is the KTM 85 SX suitable for beginners? A: It is better suited for young riders who already have some riding experience, as the power delivery can feel aggressive for complete beginners. Q: Does the KTM 85 SX require high maintenance? A: Yes, like most two-stroke motocross bikes, it requires frequent maintenance such as piston checks, air filter cleaning, and regular servicing. Q: What is the fuel type used in KTM 85 SX? A: It runs on petrol mixed with two-stroke oil, not plain petrol. Q: How many gears does the KTM 85 SX have? A: It comes with a 6-speed gearbox. Q: Can the KTM 85 SX be used for daily commuting? A: No, it is not designed for daily use, comfort, or long rides, and lacks features needed for regular road riding. Q: What age group is the KTM 85 SX designed for? A: It is typically designed for young riders, usually between 11 to 15 years old, depending on height and experience. Q: Does it have electric start? A: No, it uses a kick-start mechanism. Q: What kind of riding is the KTM 85 SX best for? A: It is best suited for motocross tracks, jumps, and competitive off-road riding rather than trails or city roads. | Q: What mileage does the Aprilia RS 457 give in real riding conditions? A: Most riders can expect around 25–30 km/l depending on traffic and riding style. Q: Is the Aprilia RS 457 a good upgrade from bikes like R15 or RC 200? A: Yes, many riders consider it as a next step because of the twin-cylinder engine and higher power, but the jump in performance is noticeable. Q: Is the Aprilia RS 457 beginner-friendly? A: It can be handled by beginners with care, but it may feel powerful for someone with no prior riding experience. Q: Does the Aprilia RS 457 heat up in traffic? A: Yes, like most sport bikes, engine heat is noticeable in slow-moving traffic. Q: Is the Aprilia RS 457 comfortable for long rides? A: It is manageable on highways, but the sporty seating position may cause discomfort on longer trips. |
| Fuel System | Keihin PWK 28 | Fuel injection |
| Price Variants | STD | 669000 | STD | 422229 GP Replica | 437228 |
| Pros | Powerful 2-stroke engine with strong mid-range performance. Lightweight chassis for excellent handling on tracks. Premium WP suspension for smooth jumps and rough terrain. Strong disc brakes offering sharp stopping power. Race-ready ergonomics designed for young motocross riders. | Powerful 457 cc parallel-twin engine delivers strong acceleration and good mid-range punch. Smooth 6-speed gearbox with slipper clutch makes shifting crisp and rider-friendly. Dual-channel ABS and strong disc brakes (front + rear) give good stopping confidence, even in wet or tricky conditions. Upside-down front forks and adjustable rear suspension provide a good balance of comfort and handling, suitable for both city streets and open roads. 17" alloy wheels with wide tyres give excellent grip and stability during cornering or highway cruising. Full-LED lighting and 5" TFT digital instrument cluster offer modern feel and better visibility / readouts. Riding modes and traction control add versatility for different road conditions (city, rain, highways). Relatively manageable wet weight for a twin-cylinder bike makes it more nimble in traffic than heavier big bikes. |
| Starter | Kickstarter | Self start |
| Transmission | 6 Speed Manual | 6-speed manual |
