Quick Analysis
KTM 85 SX
8.0 pts
Unweighted: 5 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
KTM 390 DUKE
23.0 pts
Unweighted: 18 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | Liquid cooling (0.8L) | Liquid cooling with radiator |
| Displacement | 84.9 cc | 398.63 cc |
| Engine Type | 1-cylinder, 2-stroke engine | Single Cylinder, Liquid Cooled, DOHC, FI Engine |
| Power | 15.5 bhp @ 11500 rpm | 46 PS @ 8500 rpm |
| Torque | 14 Nm @ 8500 rpm | 39 Nm @ 6500 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 5.2 L | 15 L |
| Mileage | 25 kmpl | 30 kmpl |
Dimensions & Weight |
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| Kerb Weight | approx. 67 kg (without fuel) | 168.3 kg |
| Seat Height | 865 mm | 800 mm |
Brakes & Suspension |
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| ABS | — | Dual-channel ABS with SUPERMOTO mode |
| Front Brake | Disc 240 mm | 320 mm Disc with Radially mounted calliper |
| Front Suspension | XACT 43 WP Upside-Down fork, Ø 43 mm | 5-click Compression & Rebound adjustable, Open Cartridge, WP APEX USD forks, 43mm diameter |
| Rear Brake | Disc 220 mm | 240 mm Disc with Floating calliper |
| Rear Suspension | XACT WP PDS mono shock | Adjustable WP APEX Monoshock, 5-step Rebound damping, 10-step preload adjustable |
Tyres & Wheels |
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| Front Tyre | 70/100 - 17 | 110/70 - ZR17 |
| Rear Tyre | 90/100 - 14 | 150/60 - ZR17 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Features & Technology |
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| Headlight | — | Full Split LED Headlamp |
Other Specifications |
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| Battery | — | 12 V, 8 AH MF battery |
| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/11/KTM-390-Duke-Electric-orange.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/11/KTM390DukeBlack_Booking.webp |
| Cluster | — | 5" TFT dash display |
| Color Options | Orange | GUN METAL GREY ELECTRONIC ORANGE ATLANTIC BLUE |
| 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. | Firm (harsh) ride: The suspension can feel stiff over potholes or uneven surfaces, which may be tiring for long rides. Limited wind protection: Being a naked bike, you feel a lot of wind at highway speeds, making long-distance touring less comfortable. Engine heat: In slow or stop-go traffic, the radiator fan can dump hot air toward the rider’s legs, which many find uncomfortable. Seat comfort: The stock seat can feel firm and less comfortable for long rides; also, pillion comfort is limited. Vibration: Some riders report noticeable vibrations in certain RPM ranges, especially between ~4,500–6,000 rpm. Reliability concerns: There are occasional reports of reliability issues or quality control, especially in older models. |
| 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 **KTM 390 Duke** has long been celebrated as a high-performance yet lightweight streetfighter, offering a compelling mix of power, agility, and modern technology that makes it a favorite for both urban commuting and spirited weekend rides. The latest (Gen-3) 390 Duke takes this formula further, built on a newly designed trellis frame with a die-cast aluminium sub-frame that improves rigidity and handling. Under the hood, the 2024 model is powered by a liquid-cooled, single-cylinder “LC4c” engine now displacing **399 cc**, which bumps up the performance to roughly **46 PS of power and 39 Nm of torque** in the Indian spec. One of the most striking traits of the 390 Duke is its lightness: the new model continues to boast sporty handling thanks to its steel trellis frame and a compact, aggressive footprint. The WP APEX 43 mm upside-down front fork and a preload-adjustable WP APEX mono-shock at the rear provide a finely tuned suspension setup that balances comfort on city roads with precision in the corners. Braking is handled by a 320 mm front disc with a radial calliper and a 230 mm rear disc, supported by Bosch cornering ABS, giving reliable and controllable stopping performance. On the feature front, the 2024 Duke 390 is truly packed. It includes ride modes (Street, Rain, Track), launch control, SuperMoto ABS, a quickshifter+, and a slipper clutch. The ride-by-wire throttle ensures smooth power delivery and precise control, especially when transitioning between modes. Its 5-inch TFT display supports smartphone connectivity (via Bluetooth) for turn-by-turn navigation, calls, and media, making it a very usable bike for daily commuting. Ergonomically, the 390 Duke offers a sporty but accessible riding position. The seat height is around **800 mm** in the Indian variant, with an optional 820 mm seat available, making it relatively manageable for a variety of rider heights. The fuel tank is reasonably sized (KTM lists about 13.4 litres), which balances enough capacity for daily use without compromising on agility. In terms of usability, the 390 Duke shines in city traffic thanks to its light weight, responsive throttle, and nimble chassis. At the same time, its torque and power allow for satisfying highway stretches and sporty ride-outs. However, as some users note, the high-revving single cylinder can vibrate noticeably at lower RPMs, and the engine tends to heat up in slow, stop-go traffic — a common character point for small high-performance singles. On long highway rides, wind protection is minimal due to the naked nature, and though the electronics are rich, some may feel the bike’s seat and fuel range are not optimized for extended touring. Reliability-wise, many long-term owners report good durability when properly maintained. One rider, after 29,000 km, said he never faced major breakdowns and appreciated the bike’s consistent performance. That said, some others have expressed concern about vibration and the need for regular maintenance given the sporty nature of the engine. Overall, the **KTM 390 Duke** is a brilliant all-rounder in the 300–400 cc naked category. It offers serious performance, modern electronics, and a lightweight chassis, but it doesn’t compromise on practicality. For someone looking for a fun, aggressive bike that can do daily duties and weekend thrills, the 390 Duke remains one of the most compelling choices in its class. |
| Expert Review | MotoAutiv Team | 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: What is the engine capacity? A: The KTM 85 SX comes with an 84.9 cc 2-stroke engine. Q: What is the seat height? A: The seat height is approximately 850 mm. Q: What is the top speed? A: The top speed is around 110 km/h, depending on rider and terrain. Q: Does the KTM 85 SX have electric start? A: No, it comes with a kick-start mechanism. Q: What is the fuel tank capacity? A: The fuel tank capacity is 5.2 liters. Q: Is the KTM 85 SX road legal? A: No, it is not road legal as it is designed specifically for motocross/off-road racing. Q: What type of brakes does it have? A: It features disc brakes at both front and rear. Q: Is the KTM 85 SX suitable for beginners? A: It is ideal for youth riders transitioning to higher-powered bikes, but not recommended for complete beginners. Q: What is the weight of the bike? A: The bike weighs approximately 68 kg (dry weight). | Q: What engine does the KTM 390 Duke have? A: It uses a single-cylinder, liquid-cooled, DOHC engine. Q: What is the displacement, power & torque of the 390 Duke? A: The displacement is about 398.6 cc. In the newer versions, it produces around 46 PS at 8,500 rpm and 39 Nm of torque at 6,500 rpm. Q: What is the seat height and weight of the 390 Duke? A: The seat height is 800 mm (or optionally 820 mm) depending on the version. The kerb weight is about 168.3 kg per KTM’s specification. Q: What is the fuel tank capacity and what is the mileage like? A: The fuel tank capacity is 15 litres in many versions. According to some sources, real-world fuel efficiency is around 25–30 km/l, depending on riding style. Q: What brakes and suspension does it use? A: It comes with WP APEX 43 mm upside-down front forks and a WP APEX monoshock at the rear. For brakes, there is a 320 mm front disc and a 240 mm rear disc, with a radially mounted caliper up front. Q: What is the ground clearance of the 390 Duke? A: The ground clearance is around 183 mm according to KTM India specifications. Q: What is the seat configuration and ergonomics like? A: It has a two-part seat design, with a slightly aggressive but comfortable rider position thanks to its upright handlebars. There’s also a “Supermoto mode” which lets you limit ABS intervention to the front brake — great for sliding control. Q: Does the 390 Duke come with smartphone connectivity? A: Yes — some variants support KTM MY RIDE via the 5-inch TFT dash, allowing for calls, music, and navigation integration. |
| Price Variants | | 669000 | Standard | 297443 |
| 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. | Excellent performance for its class: The 390 Duke’s single-cylinder engine delivers punchy acceleration and strong mid-range performance. Lightweight & nimble: With a relatively low kerb/wet weight, its chassis is very agile, making it easy to flick through corners and manoeuvre in traffic. Advanced electronics suite: Comes equipped with ride modes, traction control (MTC), cornering ABS, supermoto ABS, quickshifter, and a modern TFT display. Adjustable suspension: The front and rear suspension are adjustable (WP APEX), allowing riders to tune the setup depending on road conditions or riding style. Sharp styling & design: Features such as an exposed steel trellis frame, LED headlight, and aggressive design make it visually striking. Good build quality: Reviews note improved fit and finish on newer models, giving a premium feel. Decent fuel efficiency: Compared to its performance, it offers reasonable fuel efficiency for sporty riding. |
| Starter | Kickstarter | — |
| Transmission | 6 Speed Manual | 6 Speed Manual |
