Quick Analysis
JAWA 42 J
24.0 pts
Unweighted: 17 advantages
EnginePerformanceDimensionsBrakesTyresOther
KTM 450 SX-F
10.0 pts
Unweighted: 6 advantages
EnginePerformanceDimensionsBrakesTyresOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Liquid cooled |
| Displacement | 334 cc | 449.9 cc |
| Engine Type | Single Cylinder, 4 Stroke, Liquid Cooled, DOHC | 1-cylinder, 4-stroke engine |
| Power | 29.17 PS | — |
| Torque | 29.62 Nm | — |
Performance & Efficiency |
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| Fuel Tank Capacity | 12 L | 7.2 L |
| Mileage | 30 kmpl | 15.33 kmpl |
Dimensions & Weight |
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| Kerb Weight | 184 kg | 107 kg |
| Seat Height | 790 mm | 958 mm |
Brakes & Suspension |
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| ABS | Dual Channel ABS | Dual Channel ABS |
| Front Brake | Disc With Floating Caliper 320 mm | Disc 260 mm |
| Front Suspension | Telescopic Forks, Ø 41 mm | WP XACT-USD (AER), Ø 48 mm |
| Rear Brake | Disc With Floating Caliper 240 mm | Disc 220 mm |
| Rear Suspension | Twin Shock Absorber With 5-step Adjustable Pre-load | WP XACT Monoshock with linkage |
Tyres & Wheels |
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| Front Tyre | 100/90-18, 56H | 80/100 - 21 |
| Rear Tyre | 140/70-17, 66H | 110/90 - 19 |
| Tyre Type | Tube | Tubeless |
| Wheel Type | Spoke | Alloy |
Other Specifications |
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| Battery | MF Battery | — |
| Bike Image 1 | https://motoautiv.com/wp-content/uploads/2025/11/42fjdeepblackmatteblackclad.webp | — |
| Bike Image 2 | https://motoautiv.com/wp-content/uploads/2025/11/42fjmystiquecopper.webp | — |
| Bike Image 3 | https://motoautiv.com/wp-content/uploads/2025/11/42fjcosmobluematte.webp | — |
| Color Options | Mystique Copper Deep Black Matte Black Clad Aurora Green Matte Deep Black Matte Red Clad Cosmo Blue Matte | Orange |
| Cons | Limited modern features – Lacks advanced electronics, ride modes, or connectivity options. Reliability concerns – Some owners report minor mechanical or electrical issues. After-sales and parts availability – Service centers may be limited in some areas, and spare parts can be hard to get. Comfort limitations for long rides – Pillion seat and luggage capacity are limited; not ideal for long-distance touring. Moderate fuel efficiency – Real-world mileage may be lower than expected in heavy traffic or aggressive riding. | Very Tall Seat: At ~958 mm, it’s difficult to handle for shorter riders, especially off-road. Small Fuel Tank: The 7.2-liter tank limits how far you can ride — built more for racing than touring. Harsh Power Delivery: The high-revving engine is race-tuned, which may be too aggressive for casual use or beginners. Vibrations: The single-cylinder engine can vibrate strongly, especially at higher RPMs. High Maintenance Cost: Premium motocross parts and servicing (suspension, clutch, engine) can be expensive. Limited Street Usability: Not ideal for daily commuting due to track-focused ergonomics and setup. Reliability Trade-offs: Some riders report issues under hard race-type use, like stripped screws or wear on high-stress parts. |
| Detailed Overview | Riding the Jawa 42 FJ feels like you’re commanding a machine that strikes a rare balance — it’s rugged without being raw, modern without giving up its classic soul. Under its skin lives a 334 cc, single-cylinder, liquid-cooled DOHC engine that’s tuned to generate about 29.17 PS of power and 29.62 Nm of torque. That power figure isn’t about wild acceleration; it’s about usable, confident torque right in the midrange — the kind that lets you surge past slow-moving traffic or carry speed comfortably once you’re out on open roads. Because the engine is liquid-cooled, it resists overheating even in stop-go traffic or during longer rides, which is a big plus for both city commuters and weekend travellers. Paired with that engine is a 6-speed constant-mesh gearbox, which gives the 42 FJ a flexibility that many retro-inspired bikes lack. In the city, lower gears help you navigate tight turns and slow zones; crank into the higher gears on the highway, and the bike relaxes into a smooth, sustained rhythm — it doesn’t feel stressed or out of breath. The assist-and-slipper clutch makes downshifts lighter and safer, especially when you’re slowing down hard or tackling steep terrain. This kind of setup means you don’t have to wrestle with clutch levers constantly — the bike does a lot of the work for you. On the road, the frame’s double-cradle design gives the bike a stable backbone. The front suspension is handled by telescopic forks (41 mm), while the rear uses twin shock absorbers with 5-step preload adjustment. In real-world terms, that means potholes and rough patches don’t slam into your spine — there’s just enough give to absorb most imperfections without turning the ride into a mushy mess. Once the road smooths out, the brakes — dual disc with floating calipers and dual-channel ABS — give strong, predictable bite. You feel secure braking hard, even when you’re leaning into a turn or coming down from highway speed. The motorcycle’s dimensions also contribute to its confidence-in-motion: a wheelbase of 1,440 mm gives it stability, while a seat height of 790 mm makes it accessible for many riders without feeling too compact. Ground clearance sits at 178 mm, which helps when you’re navigating over uneven terrain or clearing speed breakers — something very relevant in real-world road conditions. At a kerb weight of around 184 kg, it’s not feather-light, but once moving, it feels planted rather than ponderous. In city traffic, the weight is manageable; on highways, it adds to the sense that the bike is confident and steady. Fueling comes from injection, and though the claimed tank capacity is 12 litres, the real-world balance likely leans toward practicality over long-range touring. For regular commuting and moderate weekend rides, that tank paired with the efficient engine should work well, though it may not give you motorway-range without a stop. Riders who expect to do long-haul touring might need to plan fuel stops more carefully. The wheels are wrapped in road-friendly tyres (100/90-18 up front, 140/70-17 at the rear), which, along with the disc-brake setup, reinforce good grip and handling. The brakes feel responsive — not grabby, but confident. That’s exactly what you want when your speed is building or when traffic messes up your smooth ride. Electronics on the 42 FJ are minimal but practical: there’s a fully digital instrument cluster that shows speed, gear position, fuel, and trip details — all clearly visible so you don’t have to squint or guess. No flashy connectivity gimmicks, but the essentials are covered well. The exhaust comes in a twin layout, which gives the FJ a good exhaust note — neither too loud to be annoying in residential areas, nor too soft to sound uninspiring. In terms of design, the 42 FJ stands out. The brushed aluminium cladding on the tank gives it a distinctive, premium look. It’s not just retro for retro’s sake — the styling feels purposeful, with a bold, modern twist. Colours range from deep matte shades to dual-tone finishes, giving riders a variety of looks to express themselves. Price-wise, the ex-showroom figure starts at around ₹1.93 lakhs and can go to about ₹2.2 lakhs depending on variant and location. Riding one means committing to a machine that’s not just about show: you’re getting a bike with real substance — capable of daily commuting, capable of enjoyable weekend rides, and capable of delivering a retro-modern experience without too many compromises. Overall, the Jawa 42 FJ feels like a well-rounded partner on two wheels. It doesn’t demand constant attention or aggressive riding, but it rewards smooth, thoughtful throttle control and confident road use. For someone looking for a neo-classic bike that’s equally at home in city traffic and on open highways, it’s a choice that marries character with practicality. | The KTM 450 SX-F is a high-performance motocross machine built to compete at the highest level; it’s engineered for speed, agility, and race track domination rather than casual cruising. At its core lies a 449.9 cc four-stroke, single-cylinder, liquid-cooled engine, tuned to generate strong and immediate power with a broad rev range. This powertrain is designed to make explosive bursts out of corners, offer consistent throttle response, and deliver a raw racing feeling. The engine’s lightweight construction contributes significantly to the bike’s competitive edge, keeping the overall weight low and enabling sharp acceleration. KTM has optimized the 450 SX-F’s handling through a sophisticated chassis and suspension setup. The bike features WP XACT 48 mm inverted front forks and a matching WP XACT rear shock which combine to offer generous travel (around 310 mm front and 300 mm rear), excellent damping, and great control during jumps or uneven terrain. This suspension system provides riders with a stable and predictable ride, whether they’re launching off a tabletop or navigating whoops on a technical track. The frame itself, likely a high-grade steel trellis design, balances rigidity and flexibility to help maintain stability under heavy loads while allowing for sharp and responsive feedback when pushed aggressively. Electronics on the 450 SX-F reflect its competitive nature. It comes equipped with launch control, enabling better starts during drag-style races. Additionally, the bike offers selectable engine mappings and traction control, giving riders the flexibility to choose different levels of assistance based on track conditions. These systems help control wheel spin, optimize torque delivery, and enhance safety at high RPMs. The inclusion of a quickshifter goes a long way in making aggressive riding smoother, while the engine maps help tailor performance for dry, dusty tracks or slippery surfaces. Though a serious racewheel, KTM hasn’t skimped on user convenience: the 450 SX-F includes an electric starter, so riders don’t need to rely on kick-starting, a welcome feature for modern motocross users. The ergonomics are built for competition: a high seat height (~958 mm) and tall, wide handlebars give the rider a commanding posture, facilitating balance and control over big jumps and landings. Despite being built for off-road prowess, the rider’s triangle provides a decent balance—standing up or sitting down remains natural and feels intentional, rather than an afterthought. The bike’s weight is impressively kept in check, making it lighter than many of its peers. This low weight improves not only maneuverability but also helps reduce rider fatigue during extended sessions on the track. At the same time, the drivetrain is engineered with a 5-speed gearbox, making gear changes efficient and suited to the demands of motocross. The clutch is performance-oriented, ensuring durability and precise engagement under racing stress. Fuel capacity is modest (around 7.2 liters), which is typical for a motocross bike but restricts the 450 SX-F to race or track use rather than long-distance adventures. Maintenance is regular and can be demanding: high-revving competition engines demand careful attention to oil changes, suspension settings, and component wear. Still, many motocross riders consider this a fair trade-off given the bike’s competitive performance. In summary, the KTM 450 SX-F is a race-bred motocross machine that delivers raw power, high agility, and top-tier handling. It’s not designed for comfort cruising or commuting—it’s built for serious track work and competitive environments. For riders who live for the thrill of racing, who demand the sharpest throttle response, and who don’t shy away from the maintenance demands of four-stroke competition bikes, the 450 SX-F is a standout performer. |
| Expert Review | MotoAutiv Team | MotoAutiv Team |
| FAQ (Manual Override) | Q: What is the Jawa 42 FJ? A: It is a modern-styled version of the Jawa 42 with a brushed-metal tank, sporty detailing, and a more premium, neo-retro look. Q: What engine does the Jawa 42 FJ use? A: It uses a 334cc, liquid-cooled, single-cylinder DOHC engine. Q: How much power and torque does it produce? A: It delivers around 29.17 PS of power and 29.62 Nm of torque. Q: What is the mileage of the Jawa 42 FJ? A: Real-world mileage is around 28–32 kmpl depending on riding style. Q: Does the Jawa 42 FJ have a 6-speed gearbox? A: Yes, it comes with a 6-speed constant-mesh gearbox and a slipper clutch. Q: Does the Jawa 42 FJ come with ABS? A: Yes, it features dual-channel ABS for safer braking. Q: What is the seat height of the Jawa 42 FJ? A: The seat height is approximately 790 mm, making it comfortable for most riders. Q: What is the kerb weight of the bike? A: The Jawa 42 FJ weighs around 184 kg. Q: What is the fuel tank capacity? A: It has a 12-litre fuel tank. Q: Is the Jawa 42 FJ good for daily commuting? A: Yes, its smooth engine and comfortable ergonomics make it great for daily use. Q: Is the Jawa 42 FJ suitable for long rides? A: Yes, the stable frame, 6-speed gearbox, and comfortable seating make it capable of touring. Q: What type of brakes does it use? A: It comes with front and rear disc brakes paired with dual-channel ABS. Q: What are the tyre sizes of the Jawa 42 FJ? A: 100/90-18 at the front and 140/70-17 at the rear. Q: What makes the FJ edition different from the regular Jawa 42? A: The FJ gets a brushed-aluminium tank finish, sportier styling, and a more modern premium look. Q: What is the approximate price of the Jawa 42 FJ? A: The ex-showroom price starts around ₹1.93 lakh and varies by location. | Q: What is the engine specification of the KTM 450 SX-F? A: The bike is powered by a 449.9 cc, single-cylinder, 4-stroke liquid-cooled engine. Q: What is the power and torque output? A: According to specs, the 450 SX-F produces about 62.96 PS and approximately 74 Nm of torque. Q: What kind of transmission does it have? A: It uses a 5-speed gearbox. Q: What is the fuel tank capacity? A: The fuel tank capacity is around 7.2 litres. Q: What is the seat height and ground clearance? A: The seat height is 958 mm, and ground clearance is very high at 343 mm. Q: What suspension setup is used on the 450 SX-F? A: It comes with WP XACT 48 mm USD front forks and a WP XACT monoshock with linkage. Q: What brakes does it have? A: The 450 SX-F is equipped with a 260 mm front disc and a 220 mm rear disc. Q: What electronic / rider-aid features does it include? A: It comes with launch control, quickshifter, selectable engine maps + traction control (TC), and a connectivity unit for off-road use. Q: What is the weight of the 450 SX-F? A: The kerb weight is approximately 107 kg for the standard model. Q: Does this bike have an electric starter? A: Yes, it has a self-starter (electric), so you don’t need to kick-start it. Q: What kind of fuel should I use? A: The manufacturer recommends high-octane / race-grade fuel for optimal performance. However, some users mention that standard premium pump gas (91 RON) works “just fine” on a stock setup. Q: How reliable is the 450 SX-F? A: While KTM 450s are high-performance machines, many owners report good longevity with regular maintenance. Some have raised concerns about top-end rebuilds, but others say healthy use with regular oil changes can bring 180+ hours before any major work. |
| Fuel System | Electronic Fuel Injection | — |
| Price Variants | | 193000 | | 1025100 |
| Pros | Retro-modern styling – Classic look with modern touches makes it stand out. Decent engine performance – The 294 cc engine with 6-speed gearbox provides good acceleration and city/highway usability. Comfortable ergonomics – Low seat height and upright riding stance make it accessible for most riders. Blend of old-school charm + modern basics – Features like disc brakes, ABS, and alloy/spoke wheel options balance nostalgia with practicality. Fun to ride – Lightweight and responsive, ideal for weekend rides or casual city commuting. | Very High Performance: The 449.9 cc single-cylinder engine delivers strong, race-ready power for motocross. Light and Agile: With its low weight (around 107 kg) and compact frame, it’s extremely maneuverable on tracks. Top-Tier Suspension: Equipped with WP XACT 48 mm USD forks and a high-travel rear shock, making it very capable over jumps and rough terrain. Modern Electronics: Includes launch control, selectable engine maps, quickshifter, and traction control for improved control. Electric Start: Convenient and practical — no need for kick-starting. Strong Chassis: The trellis frame offers a good mix of stiffness and flexibility, ideal for aggressive riding. Serviceability: Easy access to key components like the air filter and suspension for maintenance. |
| Transmission | 6–Speed | 5 Speed Manual |
