Quick Analysis
KTM 85 SX
11.0 pts
Unweighted: 8 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
KTM 350 EXC-F SIX DAYS
21.5 pts
Unweighted: 15 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | Liquid Cooled | Liquid-cooled |
| Displacement | 84.9 cc | 349.7 cc |
| Engine Type | 1-cylinder, 2-stroke engine | 1-cylinder, 4-stroke engine |
| Power | 15.5 bhp @ 11500 rpm | 44.3 bhp @ 9500 rpm |
| Torque | 14 Nm @ 8500 rpm | 36 Nm @ 7000 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 5.2 L | 8.5 L |
| Mileage | 25 kmpl | 25 kmpl |
Dimensions & Weight |
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| Kerb Weight | approx. 67 kg (without fuel) | 107 |
| Seat Height | 865 mm | 963 |
Brakes & Suspension |
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| ABS | — | Dual Channel ABS |
| Front Brake | Disc 240 mm | Disc 220 mm |
| Front Suspension | XACT 43 WP Upside-Down fork, Ø 43 mm | WP XACT-USD, Ø 48 mm |
| Rear Brake | Disc 220 mm | Disc 220 mm |
| Rear Suspension | XACT WP PDS mono shock | WP XPLOR shock absorber with PDS |
Tyres & Wheels |
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| Front Tyre | 70/100 - 17 | 90/90 - 21 |
| Rear Tyre | 90/100 - 14 | 140/80 - 18 |
| Tyre Type | Tubed | Tubed |
| Wheel Type | Spoke | Spoke |
Features & Technology |
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| Headlight | — | LED headlight |
Other Specifications |
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| Battery | — | 12.8V 2Ah |
| Color Options | Orange | #F2771A | Metallic White | #F4F4F4 |
| 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. | High purchase cost: As a premium “Six Days” edition, it’s more expensive than standard enduro bikes. Tall seat height: Around 963 mm, which can be difficult for shorter or less‑experienced riders. Small-ish fuel tank (~8.5 L), which may limit range in very long or remote enduro rides. Maintenance-intensive: High-performance components (valves, clutch, engine) need frequent checks and servicing. Can feel “stiff” for casual riders: The race-tuned suspension and aggressive setup may not be comfortable for easy trail riding. Reliability concerns: Some users report fueling issues (lean running), and need for aftermarket ECU or tuning.; Battery dependency: Electric start depends on the lightweight batter if it fails, starting could be problematic. |
| 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 350 EXC-F Six Days is a premium, race-oriented version of KTM’s 350cc enduro bike, designed to deliver top-tier performance for serious off-road riders who demand both power and endurance. Constructed with high-quality components and Six Days–specific upgrades, this model embodies KTM’s racing legacy while remaining practical enough for hard enduro, cross-country, and competition-style riding. At its heart, the Six Days version uses a 349.7 cc single-cylinder, 4-stroke, DOHC engine. The engine features a Keihin EFI system with a 42 mm throttle body for precise fuel delivery and efficient performance. A wet, multi-disc DDS clutch with Brembo hydraulics gives smooth yet reliable clutch control, while the 6-speed gearbox offers a wide range of ratios to tackle technical terrain and high-speed sections. Powerplant design also focuses on minimizing friction and centralizing mass, the engine is slightly tilted backward for a low center of gravity and better balance. For starting, the bike uses an electric starter powered by a lightweight 2 Ah lithium-ion battery. This setup ensures reliable starts and helps reduce overall weight. The wiring harness is smartly tucked under the seat to keep things clean and accessible. The chassis is built from 25CrMo4 chromoly steel in a double-cradle design, giving it the right mix of strength and flex for rugged terrain. The sub-frame is a two-part construction made from reinforced aluminum and polyamide, designed to flex under stress instead of breaking. To maintain stability, the Six Days has CNC-machined triple clamps and a forged steering head these contribute to strong rigidity and precise handling, even at high speed or on demanding trails. Suspension is a standout: up front, there’s a 48 mm WP XACT upside-down fork with fully adjustable compression and rebound. At the back, a WP XPLOR PDS shock offers tool-free hand-adjustable dual compression clickers, making it easy to tune on the fly. Suspension travel is generous 300 mm at the front and 310 mm at the rear, helping the bike soak up big hits, jumps, and rough terrain. The Six Days edition also comes fitted with GIANT alloy wheels (1.60×21″ front, 2.15×18″ rear) and high-traction Metzeler 6 Days Extreme tires, tailored for grippy performance in a variety of off-road conditions. Braking is handled by large discs 260 mm at the front and 220 mm at the rear providing reliable stopping power. In terms of ergonomics, the seat height is 963 mm, which suits taller or more experienced riders, and ground clearance is a generous 347 mm, helping clear obstacles easily. The fuel tank has a capacity of about 8.5 liters, made from transparent XPE material so you can easily see fuel level, and it’s designed for durability and low weight. KTM has also included modern rider aids: there’s a Map Select switch which lets riders toggle between different engine maps for varied terrain, and traction control (MTC) helps maintain grip when things get slippery. Optionally, there’s also a quick-shifter for clutchless upshifts (2nd to 6th gear), which is particularly useful for racing or long enduro stages. Durability is a big focus. The Six Days version includes factory protection like reinforced plastics, and the frame and subframe are built to resist stress and flex intelligently. The exhaust is compact and routed close to the engine for better mass centralization and protection. Overall, the KTM 350 EXC-F Six Days blends race-grade performance with thoughtful off-road capability. It’s a bike built for enduro warriors who want a powerful, agile, and durable machine perfect for demanding multi-day events or serious trail riding. |
| 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 KTM 350 EXC-F Six Days is an enduro motorcycle designed for serious off-road riding, sitting between the lighter 250 and more powerful 450 in terms of performance. It uses a 349.7cc four-stroke engine that delivers smooth and linear power, making it easier to manage across both tight trails and open sections. The lightweight chassis and fully adjustable WP suspension help it handle rough terrain, rocks, and jumps effectively, while still feeling agile and controlled. The Six Days version adds features like a map switch, traction control, and quick shifter, which improve adaptability in different riding conditions. However, the tall seat height, firm setup, and high maintenance needs can make it demanding for less experienced riders, and its small fuel tank limits long-distance use. Overall, it is built mainly for technical off-road riding rather than everyday practicality., 4.0, 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: Is the KTM 350 EXC-F Six Days road legal in India? A: No, the KTM 350 EXC-F Six Days is not road legal in India and is designed mainly for off-road and enduro riding. Q: What is the engine capacity of the KTM 350 EXC-F Six Days? A: The KTM 350 EXC-F Six Days comes with a 349.7cc, single-cylinder, liquid-cooled, four-stroke engine. Q: Is the KTM 350 EXC-F Six Days suitable for beginners? A: The KTM 350 EXC-F Six Days is not ideal for beginners and is better suited for riders with prior off-road experience. Q: What makes the KTM 350 EXC-F Six Days different from the standard version? A: The KTM 350 EXC-F Six Days includes features like traction control, map switch, quick shifter, and upgraded components for improved off-road performance. Q: Can the KTM 350 EXC-F Six Days be used for long-distance touring? A: The KTM 350 EXC-F Six Days is not designed for touring due to its small fuel tank and off-road-focused setup. Q: What type of riding is the KTM 350 EXC-F Six Days best for? A: The KTM 350 EXC-F Six Days is best suited for enduro riding, trail riding, and technical off-road conditions. Q: Does the KTM 350 EXC-F Six Days require high maintenance? A: Yes, the KTM 350 EXC-F Six Days requires regular servicing and maintenance, especially when used aggressively off-road. Q: What is the weight of the KTM 350 EXC-F Six Days? A: The KTM 350 EXC-F Six Days weighs just over 100 kg (dry), making it easier to handle on trails. Q: Does the KTM 350 EXC-F Six Days have electric start? A: Yes, the KTM 350 EXC-F Six Days comes with an electric start system. Q: How is the KTM 350 EXC-F Six Days different from a 450cc enduro bike? A: The KTM 350 EXC-F Six Days offers a balance between power and control, making it easier to handle than a 450cc bike while still being more powerful than a 250cc. |
| Fuel System | Keihin PWK 28 | Electronic Fuel Injection |
| Price Variants | STD | 669000 | Pro Xp | 1295800 |
| 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. | Very good power-to-weight ratio, compact 350 cc engine + light chassis gives strong performance. Highly adjustable suspension: 48 mm WP XACT fork + WP XPLOR PDS shock, both with tool-free tuning. High-end factory parts: CNC-machined triple clamps, Six Days‑specific styling and components. Electric start with a lightweight lithium-ion battery makes it easier to start in remote locations. Quickshifter included for clutchless upshifts (2nd–6th gear), great for racing or long enduro stages. Map switch / traction control: Lets the rider change engine mapping on the go for different terrain. Durable and race‑ready: Built to ISDE (Six Days) spec, with strong frame and race-focused components. Good ergonomics: Rider-focused design, with good grip, balanced weight distribution, and flat seat profile. |
| Starter | Kickstarter | — |
| Transmission | 6 Speed Manual | 6 Speed Manual |
