Fossa Fun 49cc - Mini Bike

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€349.90
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Couleur: Orange
Out-of-Stock

Give your child an unforgettable adventure with the Nitro Motors Fossa Fun 49cc Mini Bike. This mini bike combines performance and safety for thrilling yet worry-free rides. Powered by a 2-stroke 49cc engine, it delivers the perfect amount of power for young riders while ensuring exceptional handling thanks to its reinforced frame and Wave disc brakes. At XtremRS, we’ve chosen this model for its premium design and superior craftsmanship, guaranteeing a unique and secure experience. Take advantage of our dedicated customer service and warranty to support your child in their first motocross adventures.

Product details

Be Seduced by the Performance of the Mini Bike Fossa Fun 49cc – Adventure Within Reach!

The Mini Bike Fossa Fun 49cc from Nitro Motors is much more than just a motorized toy: it’s a machine designed for thrill-seekers, combining compactness, maneuverability, and durability. Whether you're a young aspiring rider or an adult looking for a lightweight bike for fun sessions on private terrain, this Mini Cross Bike will impress you. With its 2-stroke 49cc engine delivering 1.8 kW and a top speed of around 50 km/h, it offers an ideal power-to-weight ratio (only 23 kg empty) for sharp acceleration and responsive handling. At XtremRS, we selected it for its build quality and premium features, rare in this category. Unsure whether to choose between an electric motocross or thermal motocross? Our guide tells you everything you need to know.

Mini Bike Fossa Fun 49cc - Side view

A Reinforced Frame and Aluminum Swingarm for Optimal Road Holding

The Mini Bike Fossa Fun stands out with its aluminum swingarm, a key component for absorbing shocks and ensuring optimal stability, even on rough terrain. Unlike low-end models equipped with heavy, poorly resistant steel parts, this cross bike benefits from a design focused on performance. The 260 mm ground clearance and 850 mm wheelbase offer a perfect balance between agility and control. XtremRS Expert Tip: To extend the swingarm's lifespan, regularly check the bolt tightness and lubricate the pivots after each ride in muddy or dusty conditions.

Wave Disc Brakes: Braking Power Worthy of Professional Cross Bikes

Equipped with front and rear Wave disc brakes, the Fossa Fun 49cc features a braking system typically reserved for competition bikes. These discs, recognizable by their wavy shape, dissipate heat better and reduce the risk of fading (loss of efficiency) during repeated braking. A major advantage for demanding riders seeking to master their Mini Bike safely. Our Recommendation: After the first 10 hours of use, check the wear on the brake pads and adjust the brake cable if necessary to maintain an immediate response from the lever.

Mini Bike Fossa Fun 49cc - Front brake detail
Mini Bike Fossa Fun 49cc - Rear suspension

Upside-Down Rear Shock Absorbers: The Comfort and Precision of a Real Dirt Bike

The Mini Bike Fossa Fun features an Upside-Down rear shock absorber (inverted) and an adjustable aluminum spring preload combination—a rare configuration on entry-level mini bikes. This system allows you to adapt the suspension stiffness to your weight (up to 60 kg max load) and the type of terrain. Whether you're riding on a dirt track or a forest trail, you'll enjoy the grip and comfort of a professional dirt bike. XtremRS Tip: For optimal adjustment, start with a medium preload, then fine-tune in 1/4-turn increments based on your feel.

Chain Drive and Automatic Clutch: Simplicity and Reliability

The chain drive of the Fossa Fun 49cc is protected by an integrated chain guard, limiting mud splatter and breakage risks. Paired with an automatic clutch, it eliminates jerks during acceleration and makes it easier for beginners to handle. No need to shift gears: the system naturally adapts to your speed. Good to Know: To extend the chain's lifespan, clean it after each use with a degreaser-soaked cloth, then lubricate it with a specific oil (available in our maintenance section). A well-maintained chain also reduces wear on the sprocket and pinion.

Mini Bike Fossa Fun 49cc - Chain and clutch
Mini Bike Fossa Fun 49cc - Easy Starter

Easy Starter and Kill Switch: Daily Safety and Practicality

Forget finicky starters! The Mini Bike Fossa Fun is equipped with an aluminum Easy Starter pull system, an ultra-resistant cable-pull mechanism that ensures first-pull starting, even after long periods of inactivity. Another important detail: the kill switch cord (or "kill switch"), attached to the handlebar, allows you to instantly stop the engine in an emergency. XtremRS Safety Tip: Before each use, pull the cord to ensure the kill mechanism works properly. If replacement is needed, opt for a quality cord (reference available as a spare part). Always follow safety rules: we explain everything here.

3-Level Power Restriction: Adapted Progression for All

With its 3-speed throttle restriction system (adjustable via the rotating throttle grip), this Mini Bike adapts to all riding levels. The first setting limits power for beginners, while the third unleashes the full potential of the 49cc engine. An ideal feature for parents wanting to support their children's learning or for experienced riders who want to adjust performance based on the terrain. Our Opinion: Always start with level 1 to get used to the engine's responsiveness, especially if you're transitioning from a pocket bike to a more powerful model like this cross bike.

Mini Bike Fossa Fun 49cc - Throttle control
Mini Bike Fossa Fun 49cc - Handlebar and exhaust

Ergonomic Handlebar and Optimized Exhaust: The Details That Make the Difference

The raised handlebar of the Fossa Fun 49cc offers a natural riding position, reducing fatigue during long sessions. The exhaust, designed for optimal performance, minimizes backpressure and improves engine response. Technical Tip: After 50 hours of use, check the exhaust mountings and clean the muffler with an anti-rust product to prevent corrosion, especially if riding in wet conditions. For noise-conscious riders, an approved silencer can be added. A 49cc engine needs care. We explain everything in our guide.

1. What is a Mini Bike, and who is the Nitro Motors Fossa 49cc model for?
A Mini Bike is a miniature motorcycle, ideal for leisure, sports, or short trips. The Nitro Motors Fossa 49cc is a Dirtbike/Crossbike designed for children (from ~8 years old) and teenagers, as well as for small adults or those looking for a lightweight, maneuverable vehicle. With its 49cc engine, it is suitable for beginners and users seeking a powerful yet easy-to-handle machine. Its 61.5 cm seat height and 60 kg max load make it a perfect choice for young riders.
2. Is this Mini Bike road-legal, or is it for off-road use only (track, garden, private land)?
The Nitro Motors Fossa 49cc is not road-legal in France and most European countries. It is designed for exclusive use on private terrain (gardens, motocross tracks, closed circuits, etc.). To ride on public roads, it would need a certificate of conformity, lighting, a license plate, and insurance, which is not the case here. Always check local regulations before use.
3. What is the top speed of this Mini Bike, and is it suitable for beginners?
This model reaches a top speed of around 50 km/h, which is enough for fun without being excessive. It is equipped with a 3-level throttle restriction system, allowing you to adjust power based on the rider's experience. This makes it an excellent choice for beginners, who can start with reduced speed before moving to higher levels.
4. How does the "Easy Starter" system work? Is it easy for a child to use?
The Nitro Motors Fossa 49cc is equipped with an aluminum pull-start (Easy Starter) system, replacing the traditional kick-starter. Simply pull a cord (like a lawnmower) to start the engine. This system is simple and intuitive, even for a child, and avoids the effort required with a kick-start. A video tutorial is often available upon request to master the technique.
5. What type of maintenance is required for this Mini Bike?
Here are the key maintenance points to ensure the longevity of your Mini Bike:- **Oil changes and lubrication**: The 2-stroke engine requires a fuel/oil mix (1:25 ratio). Use specific 2-stroke oil to avoid premature wear.- **Air filter cleaning**: The plastic filter should be cleaned regularly (every 5-10 hours of use) to prevent engine clogging.- **Brake inspection**: The Wave disc brakes must be checked for pad and disc wear.- **Chain lubrication**: The chain drive should be frequently lubricated (with appropriate grease) and tensioned if necessary.- **Tire check**: Inspect tire pressure and wear (2.50-10) before each use.- **Suspension**: The Upside-down forks and adjustable rear shock should be checked for optimal comfort.The 2-year warranty covers manufacturing defects but not wear parts (chain, tires, brake pads, etc.).
6. Can the power be adjusted for a beginner child?
Yes! This Mini Bike is equipped with a 3-level throttle restriction system, allowing you to limit the maximum speed based on the rider's level:1. **Level 1 (Beginner)**: Reduced speed for a smooth start.2. **Level 2 (Intermediate)**: Moderate power for progression.3. **Level 3 (Expert)**: Full power (up to ~50 km/h).This is ideal for supporting a child's or teenager's learning process.
7. What safety equipment is recommended for using this Mini Bike?
For safe use, we strongly recommend the following equipment (not included):- **Full-face helmet** (ECE 22.05 standard or higher).- **Gloves** (reinforced to protect hands).- **Shin guards and knee pads** (to prevent injuries in case of a fall).- **Protective jacket and pants** (with integrated pads if possible).- **High-top shoes** (motorcycle boots or sturdy sports shoes).- **Elbow guards** (optional but recommended).The Mini Bike is also equipped with an emergency kill switch (lanyard), to be attached to the wrist to stop the engine in case of a fall.
8. What are the dimensions and weight of this Mini Bike? Is it easy to transport?
Here are the detailed dimensions and weight:- **Length x Width x Height**: 1280 x 270 x 830 mm.- **Net weight**: 23 kg (without fuel).- **Gross weight**: 28 kg (ready to ride).- **Seat height**: 61.5 cm (suitable for children/teens).- **Wheelbase**: 850 mm.- **Ground clearance**: 260 mm.Thanks to its light weight (23 kg), it is easy to transport in a car trunk or trailer. The packaging dimensions (1100x290x530 mm) also allow for convenient delivery.
9. What type of fuel should be used, and what is the range?
The Nitro Motors Fossa 49cc runs on a 2-stroke fuel/oil mix, with a ratio of 1:25 (1 liter of oil per 25 liters of gasoline). We recommend:- **Unleaded gasoline 95 or 98**.- **Quality 2-stroke oil** (e.g., Motul, Castrol).The tank has a 1-liter capacity, offering a range of about 30-40 km depending on usage (full power or restricted). Always bring an extra can of mix for long sessions.
10. What are the delivery times and costs for this Mini Bike?
Here are our delivery conditions:- **Delivery time**: 5 to 8 business days after order confirmation (delivery by appointment).- **Shipping costs**: - Free for orders over €150 (excluding vehicles). - For vehicles (like this Mini Bike), delivery is free for purchases over €500. Below this, additional fees may apply (contact us).- **Delivery**: Handled by a specialized carrier, with an appointment for proper reception.
11. Is this Mini Bike delivered assembled or as a kit? Are special tools required for assembly?
The Nitro Motors Fossa 49cc is delivered partially assembled. Here’s what typically needs assembly:- **Wheels** (front and rear).- **Handlebar** (to be attached to the fork).- **Seat** (to be positioned on the frame).- **Tires** (inflation required).A detailed assembly manual is provided, and no special tools are required (a wrench, screwdriver, and bike pump are sufficient). Allow 30 to 60 minutes for complete assembly. A tutorial video can be provided upon request.
12. Can this Mini Bike be used on rough terrain (cross, trails)?
Yes! The Nitro Motors Fossa 49cc is designed for varied terrain thanks to:- **High-performance suspension**: Upside-down front fork and adjustable rear aluminum shock.- **Knobby tires** (2.50-10) for good grip on dirt, gravel, or grass.- **Wave disc brakes** (front and rear) for effective braking.- **Chain guard** to prevent mud splatter.However, it is not recommended for extreme jumps or very rocky terrain, which could damage the frame or suspension.
13. What is the difference between this Mini Bike and a road-legal model?
The main differences are:| **Criteria** | **Nitro Motors Fossa 49cc (Off-Road)** | **Road-Legal Mini Bike** ||----------------------------|----------------------------------------|---------------------------|| **Approval** | Not approved (private use only) | Certified (can be registered) || **Lighting** | None | Headlight, turn signals, taillight required || **Max Speed** | ~50 km/h | Often limited to 45 km/h (moped category) || **Brakes** | Wave discs (off-road) | Brakes compliant with road standards || **Tires** | Knobby (dirt) | Road tires (smooth or semi-smooth) || **Insurance** | Not mandatory | Mandatory (moped insurance) || **Price** | Generally cheaper | More expensive (approval costs) |This model is ideal for leisure, while a road-legal model is suitable for urban trips.
14. Can I buy spare parts or accessories for this Mini Bike?
Yes, we offer a wide range of spare parts and accessories for the Nitro Motors Fossa 49cc, including:- **Mechanical parts**: Chains, tires, brake pads, air filters.- **Aesthetic parts**: Stickers, protective fairings, grips.- **Safety accessories**: Hand guards, race number plates.- **Upgrades**: Performance exhaust, additional throttle kits.Feel free to contact us for a complete list or specific order. Parts are usually delivered within 3 to 5 days.
15. What is the warranty and return policy for this product?
Here are our conditions:- **Warranty**: 2 years (excluding wear parts such as chain, tires, brake pads, and safety equipment).- **Returns**: Possible within 14 days of receipt if the product is new and in its original packaging. Return shipping costs are the customer's responsibility (unless there is a manufacturing defect).- **Customer Service**: Our team is available for any technical questions or complaints. In case of breakdown under warranty, we cover repairs or replacements (excluding labor if external intervention is required).For any request, contact us with your order number and a description of the issue.
16. Is this Mini Bike suitable for an adult, or only for children?
Although primarily designed for children and teenagers, this Mini Bike can also suit small adults (up to ~1.65 m) and lightweight individuals (max load 60 kg). Here’s what to check:- **Seat height (61.5 cm)**: The rider must be able to touch the ground with their feet.- **Weight**: An adult close to the 60 kg limit should avoid jumps or intensive use.- **Comfort**: The suspension is adjustable but designed for lighter builds.For regular adult use, we recommend a more robust 50cc or 125cc model.
17. How do I maintain the Wave disc brakes?
The front and rear Wave disc brakes require regular maintenance:1. **Cleaning**: After each ride on muddy terrain, clean the discs and calipers with a damp cloth to prevent corrosion.2. **Pad inspection**: Check the remaining thickness (replace if < 2 mm). Pads wear faster in cross than in road use.3. **Bleeding (if necessary)**: If braking feels soft, bleed the system (requires a bleeding kit and DOT 4 brake fluid).4. **Lubrication**: Grease the wheel axles to prevent seizing.5. **Adjustment**: Tighten the brake cable if the lever becomes too loose.We offer compatible replacement pad and disc kits.
18. Can you ride this Mini Bike in the rain?
Riding in heavy rain is not recommended for several reasons:- **Reduced grip**: Knobby tires lose effectiveness on wet ground.- **Corrosion risk**: Water can oxidize metal parts (chain, brake discs).- **Electronics**: Although the ignition is protected, prolonged exposure to moisture can cause malfunctions.If riding in light rain, here are our tips:- Dry and lubricate the chain after use.- Check the brakes (water reduces their efficiency).- Avoid deep puddles (risk of flooding the engine).
19. Where can I find the user manual or complete technical sheet?
The user manual and detailed technical sheet are available:1. **Download**: A link is provided in the product description ([Download Datenblatt]).2. **In the package**: A printed version is included with the Mini Bike.3. **Upon request**: Contact us by email or phone to receive a copy.The manual includes:- Assembly diagrams.- Maintenance schedule.- Adjustment tips (suspension, throttle).- Electrical diagrams (for the ignition system).
20. What are the advantages of "Upside-Down" shock absorbers on this Mini Bike?
Upside-down (inverted) shock absorbers offer several advantages over conventional forks:- **Increased rigidity**: Better road holding and precision in turns.- **Less flex**: Ideal for jumps and rough terrain.- **Finer adjustments**: Allow compression and rebound tuning for optimal comfort.- **Durability**: Seals are less exposed to impacts and dirt.- **Sporty aesthetic**: Gives the Mini Bike a "pro" look.On this model, the Upside-down fork is paired with an adjustable rear shock for an optimal cross riding experience.

Warning

The use of Pitbikes / Dirt bikes / Quads is strictly prohibited on public roads. The use of a Dirt bike, Pit bike, or Quad must be done on suitable terrain (track, private land).
The user must wear appropriate protective gear and be supervised by an adult.
The purchase of a Dirt bike, Pit bike, or Quad by a minor over 14 years old is made under the responsibility of an adult. Only one user should ride the vehicle at a time.
Purchases on the XtremRS website must be made by an adult.
Warning: Dirt bikes / Pit bikes / Quads / Pocket quads are motorized vehicles and not toys.
It is recommended to have assembly and maintenance performed by a professional. We advise users to check the vehicle's condition before and after each use.

General

Features

  • Motorisation Thermique 2 Temps
  • Taille Roues Avant 10"
  • Taille Roues Arriere 10"
  • Cylindree 49cc
  • Puissance 2.5 CV
  • Type de Freins Freins à Disques
  • Refroidissement Par Air
  • Embrayage Automatique
  • Transmission Chaine
  • Pneus avant 2,50-10
  • Pneu arrière 2,50-10
  • Poids Net 23
  • Hauteur d'assise 615
  • Entraxe essieux 850
  • Type Démarreur Lanceur
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