Overview
Anyone running in the youth ATV segment will appreciate a machine designed specifically for young riders and beginner enthusiasts. The 2017 Kymco Mongoose 70 S is built as an entry-level quad that balances fun and safety, making it suitable for kids and teenagers just starting out with off-road riding. Its scaled-down size, lightweight frame, and simple controls are tailored to help new riders develop confidence while exploring trails, dirt paths, or even backyard adventures.
This model features a 69cc single-cylinder engine with air cooling, providing enough power for moderate off-road use without being overwhelming. The CVT transmission ensures smooth acceleration, and the 4X2 driveline keeps things simple for young riders learning throttle control. Its suspension setup, with independent A-arms in the front and a swing arm in the rear, offers a comfortable ride over bumps and uneven terrain typical in backyard tracks or light trail riding. The tires are appropriately sized at 16 by 8 inches, giving stability and grip for smaller riders.
Designed with safety and ease of use in mind, the Mongoose 70 S includes drum brakes in the front and disc brakes in the rear, providing reliable stopping power at lower speeds. Its dimensions-less than 5 feet long and weighing just over 230 pounds-make it manageable for young riders to handle and control. The machine’s modest fuel capacity of 1.4 gallons ensures enough range for extended play sessions without frequent refueling. Notable within its segment, this model emphasizes user-friendly features and a manageable size, making it a popular choice for parents seeking a beginner ATV that encourages safe, confident riding on light trails or around the yard.
Performance & Powertrain
With a 69cc single-cylinder engine, this youth-oriented model offers a modest level of power suited for beginner riders and small children gaining confidence on off-road terrain. The air and fan cooling system helps keep the engine running at a steady temperature during extended use, reducing the risk of overheating during longer sessions or warm weather riding. The carburetor fuel system simplifies maintenance and tuning, making it easier for young riders or their parents to keep the machine running smoothly.
The engine’s power delivery is smooth and controlled, ideal for learning how to handle acceleration and braking. It provides enough torque to manage moderate inclines and off-road paths without feeling sluggish, but it’s not designed for high-speed or aggressive riding. The CVT transmission ensures a continuous, seamless change in power output, which helps keep the throttle response predictable for inexperienced riders and makes for a more confident riding experience. Its 4×2 drive system offers reliable traction for trail riding and work tasks on varied terrain.
Compared to other engines in this segment, the 69cc displacement emphasizes ease of use and low maintenance rather than raw speed. It’s best suited for light trail work, yard chores, or recreational riding in environments where control and safety are priorities. The engine’s size and power output strike a balance between providing enough performance to keep young riders engaged while maintaining efficiency and simplicity. this drivetrain setup delivers reliable performance for beginners, with enough torque to handle everyday outdoor activities.”
Suspension & Handling
Pull up the throttle and this machine absorbs rough trail surfaces with its independent A-arm front suspension offering 2.8 inches of travel, and a swing arm rear setup with 2.9 inches of travel. These numbers mean the Mongoose 70 S can handle small rocks, roots, and uneven terrain more comfortably, reducing rider fatigue and keeping the tires more in contact with the ground.
- Front suspension: Independent A-arm, 2.8 inches of travel
- Rear suspension: Swing arm, 2.9 inches of travel
- Tire size: 16 X 8-7 on both front and rear wheels
- Braking: Drum brakes up front, disc brake at the rear
The suspension setup prioritizes lightweight handling suited for younger riders, offering enough cushion on bumpy trails without feeling sluggish on hardpacked dirt or pavement. The drum front brakes provide enough stopping power for casual riding, while the disc rear brake improves modulation during more aggressive stops. The tire size and tread pattern are designed to grip a range of surfaces, from loose gravel to packed dirt, but may struggle on very muddy or slick terrain. this setup emphasizes control and comfort for extended trail rides or occasional work tasks around the property.
Dimensions & Ergonomics
With a length of 4.75 inches and a width of 8 inches, this machine is small enough for younger riders to handle comfortably and easy to store in a typical garage or trailer. Its height of 37 inches keeps most riders from feeling cramped or overwhelmed, making it suitable for a range of ages and sizes. The wheelbase of 37.9 inches offers decent stability for beginner riders while still allowing for quick turns on the trail or around a yard.
- Ground clearance of 7.3 inches helps clear small obstacles without getting hung up, ideal for yard work or light trail riding.
- Dry weight of 232 pounds means it isn’t too heavy for most owners to lift or load into a truck bed, especially with a partner’s help.
- A 1.4-gallon fuel tank extends riding time between fills, so kids can enjoy longer sessions without frequent stops.
Ergonomically, the seat height typically fits younger or shorter riders, making control easier and more secure. The compact size and lightweight design make loading into a truck or SUV manageable, while the dimensions also ensure good maneuverability on narrower trails and through tight spaces. the size and weight of the Mongoose 70 S are tailored to beginner riders, providing a comfortable and manageable fit for a variety of rider heights and skill levels. The dimensions support casual riding, light work, and weekend fun without feeling cumbersome or too small for the intended age group.
Notable Features
What stands out here is the inclusion of a simple yet reliable air-cooled, fan-assisted engine paired with a carburetor, which keeps maintenance manageable for young riders and their guardians. Unlike some competing models that might offer more high-tech fuel injection, this setup prioritizes ease of service and affordability, making it easier for parents to keep the machine running smoothly over time.
One of the key differences from base models is the addition of a continuously variable transmission (CVT), which provides smooth acceleration without shifting gears. This makes riding less intimidating for beginners and allows kids to focus on steering and control rather than managing a clutch or gear changes. The CVT also helps optimize power delivery and fuel consumption, extending riding time between fill-ups.
Design-wise, the Mongoose 70 S stands out with its accessible ergonomics aimed at younger riders, including a lower seat height and manageable weight. While it doesn’t pack high-end accessories or tech features, it does come equipped with safety-focused elements like a simple drum brake system and a simple drive system. These choices reflect a focus on durability, user-friendliness, and cost-effectiveness, which are often the main priorities at this price point.
Pricing & Value
What stands out here is the $2,199 price tag for a youth-focused machine like the Kymco Mongoose 70 S. This price places it squarely in the entry-level segment for youth off-road vehicles, targeting parents and young riders looking for an affordable way to introduce their kids to riding without overspending.
- Includes basic features suitable for beginner riders
- Priced lower than many adult-sized off-road bikes but still offers durability
- Designed primarily for casual trail riding and learning the basics
- Does not include high-end features or upgrades common in more expensive models
At this price, the Mongoose 70 S provides a simple entry point for young riders, emphasizing safety and ease of use. It sits at the bottom of Kymco’s lineup for youth vehicles, with higher trim models offering added features like improved suspension or larger engines. Compared to competitors, its price is competitive, but buyers should consider what features they need for a beginner versus a more seasoned rider. For most parents wanting an affordable, reliable machine to get their kids started, the $2,199 price seems fair and aligns with the value of a basic, no-frills off-road machine suited for young beginners.
Final Thoughts
Anyone running light trail rides or neighborhood errands will appreciate how approachable the 2017 Kymco Mongoose 70 S is for young riders just starting out. Its simple, manageable size combined with a 70cc engine makes it a good first machine for kids learning to handle off-road riding and basic controls. The bike’s no-frills design means less fuss for parents and ease of maintenance, which helps keep long-term ownership affordable and less stressful.
The key feature that defines this machine is its ease of use. With low power output and a manageable weight, it offers confidence-building experiences for young riders while teaching essential riding skills. This makes it an ideal stepping stone before moving on to more powerful models. But for anyone seeking to tackle more challenging terrain or requiring a machine with higher performance and advanced features, this model falls short.
For families or beginner riders, the Mongoose 70 S provides a safe and approachable option that encourages learning and fun. However, if your riding involves rougher trails, more aggressive riding, or longer durability expectations, it’s better to look at machines with larger engines, stronger frames, and more comprehensive features. The 2017 Kymco Mongoose 70 S is a good choice for entry-level use but not for serious or extended off-road adventures.
Tech specs
Engine
Transmission
Suspension
Brakes
Tires
Dimensions
Tags and taxonomy
Compatible parts for the 2017 Kymco Mongoose 70 S
Selected from this machine's own specification, not a generic list. Check any of it against the table above.
- ClassYouth ATV
- Drive4X2
- Front tire16x8-7
- Dry weight232 lb
- Youth helmet and gogglesDOT rated, sized for young ridersShop on Amazon
- Tires16x8-7Front tire size fitted from the factoryShop on Amazon
- BatteryReplacement and AGM upgradesShop on Amazon
- Oil and filter kit69ccFull service kitsShop on Amazon
- CoverStorage and traileringShop on Amazon
- Loading ramps1000 lbRated above the 232 lb dry weightShop on Amazon
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