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All orders ship via specialized freight carriers to ensure your vehicle arrives safely.
Shipping Estimate: Most orders ship within 2-3 business days. Standard shipping typically arrives within 7-12 business days. Please note that shipping times may vary during peak seasons.
Returns: We offer a 7-day return window from the date of delivery. To be eligible, the vehicle must be in new, unridden condition and in its original packaging. Please note that a 20% restocking fee applies, and customers are responsible for return freight costs. For more details, view the full Returns & Restocking Policy.
We want you to ride with total confidence. Every Coolster 3125R is backed by a Manufacturer Limited Parts Warranty that ensures your new ATV arrives in working order and stays that way.
- Engine & Transmission: Your engine’s internal lubricated parts are covered for 90 days against manufacturing defects.
- Electrical, Suspension & Chassis: Vital components—including the CDI, stator, shocks, and frame—are covered for 30 days.
- Simple Parts Replacement: If a covered part fails, we ship the replacement straight to your door. No need to haul a heavy ATV back to a shop.
The Impulse Moto Promise: If it’s a factory defect, we fix it. Period. Want total peace of mind? Upgrade to our 12-Month Extended Protection Plan for bumper-to-bumper coverage for a full year.
Activate Your Safety Net: Please Register Your Impulse Moto Warranty within 10 days of delivery to secure your coverage. Review our full Impulse Moto Warranty Policy for details.

The Details
Junior-Sized 4 Wheeler, All Terrain Vehicle
Coolster's 120cc ATV kids gas 4 wheeler is equipped with a 120cc engine, fully automatic plus reverse transmission and electric start for seamless operation. This family friendly, utility cuatrimotos 4x4 para adultos y niños provides an effortless four wheeler riding experience with ample leg room, reinforced metal frame, comfortable straddle seat, and durable 7 inch all-terrain rubber wheels to conquer nature trails. Responsive ATV quad de gasolina has built-in safety features like a speed limiter and remote engine kill switch for beginner riders age 10 and up. The Coolster ATV-3125R is the ultimate all terrain vehicle, cuatrimotos gasolina para niños de 10+, teen and adultos riders seeking utility style side by side with gas powered performance.
ATV for sale in domestic US states, excluding California.
Why Choose the Coolster Mountopz 3125R?
- Powerful 120cc Engine: Delivers smooth and reliable gas powered performance for mudding, dune play, desert and forest adventures. Looking for stylish and functional performance quad? You’ve found it.
- Automatic Transmission with Reverse Gear and Electric Start: Features three gears plus reverse for effortless navigation in tight spots. Start your all terrain vehicle with the turn of a key.
- Parking, Hand and Foot Brakes: Safety comes first with parking, hand and foot brakes for reactive stopping power.
- Durable Suspension System: Glide over bumps and dips with enhanced shock suspension, perfect for off-road adventures.
- Wide Footrest and 5.5" Ground Clearance: Enjoy longer rides and tackle all-terrains with comfort.
120cc Single Cylinder, 4-Stroke, Air-Cooled
Automatic (F-N-R)
Hydraulic Disc
0.54 gallons / 2.06L
16 x 8.0 - 7 / 16 x 8.0 - 7
165 lbs / 75 kg (rider, all cargo and accessories)
1465 x 920 x 925mm
620mm
140mm

Reverse Capabilities
Maneuvering in tight spots or backing out of challenging situations is a breeze, thanks to the ATV's reverse capabilities. Enjoy added control and convenience.
Front and Rear Racks
Whether you're carrying gear for a short ride or a long weekend adventure, the ATV-3125R has you covered with convenient front and rear racks. Load up and hit the trail with ease.
16" Wheels for Unmatched Traction
Conquer rugged terrain with ease, thanks to the ATV's 16" wheels that provide excellent ground clearance and superior traction. You'll confidently navigate through various landscapes
Ideal for Beginners
If you're new to the world of ATVs, the Coolster ATV-3125R is an excellent choice. Its user-friendly design and manageable power make it a great vehicle for those just starting their off-road journey.
Mini-Sized Powerhouse
The Coolster ATV-3125R strikes the perfect balance between power and maneuverability. Its smaller frame and yet robust 120cc engine deliver the performance you need for play.
Your Questions, Answered.
Coolster 3125R ATV FAQ
Get the technical details on speed, safety features, and the Impulse Moto delivery process to ensure the 3125R is the perfect fit for your young rider.
What age rider is the Coolster 3125R best for?
This 120cc Coolster ATV model is designed for youth riders ages 10 and up. Its compact frame and 620mm seat height make it stable and manageable for beginners.
How does the remote kill switch work?
The remote kill switch allows a supervising adult to turn off the engine from up to 65 unobstructed feet away with the touch of a button. It's the ultimate safety net for new riders.
Does this ATV have a reverse gear?
No, the 3125R features a fully automatic forward-only transmission. This simplifies the riding experience for new learners so they can focus on steering and safety.
What is the top speed of the Coolster 3125R and is itadjustable?
The Coolster 3125R reaches a restricted top speed of 15 mph, though actual performance will vary depending on the rider's weight and terrain. For added safety, the vehicle is equipped with a built-in
adjustable speed limiter on the thumb throttle. This mechanical governor
allows parents to restrict speed, ensuring the vehicle stays at a controlled
pace suited for the rider's current skill level.
Is the Coolster 3125R delivered fully assembled or partially assembled?
We offer two convenient options for your vehicle's delivery:
You can choose Partially Assembled, where the unit arrives 85-90% complete in a protective box (requiring you to install the handlebars, wheels, and battery).
Alternatively, you can select our Professional Full Assembly Service at checkout. With this option, our technicians fully assemble, test, and prep the vehicle so it is ready to ride the moment it arrives (just add fuel).
How long will it take to get my orders?
Orders typically arrive within 7-12 business days. All orders ship via specialized freight carriers to ensure your vehicle arrives safely. Once your unit ships, the freight provider will call you directly to schedule a delivery appointment.
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