Coolster 3125XR8-U / US 125cc Fully Auto OR Semi Auto Full Size Quad

: Unavailable

$1,149.99 $1,599.99

The Coolster ATV 3125XR8-U/US is the ultimate utility ATV. With both front and rear racks, 19/18 inch front/rear wheels, and a reliable...


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The Coolster ATV 3125XR8-U/US is the ultimate utility ATV. With both front and rear racks, 19/18 inch front/rear wheels, and a reliable 125cc 4-stroke engine, this machine is suitable for adults and adolescents alike. Unlike its predecessor the 3125XR8, this high quality Coolster ATV-3125XR-U/US is available in both semi and fully automatic versions. Must specify which version you would like.


Semi Automatic, Air Cooled, Front Hub/Rear Disc Brakes, 21"/20" Wheels 

Usage Reminder

1. Based on the vehicles' nature and intended use, it is strongly recommended that assembly and PDI be performed by trained, licensed mechanics. 

2. All units, including those which have been fully assembled, are subject to unforeseen conditions during transit. All units must be inspected prior to initial operation in order to prevent unnecessary damage and ensure a riding experience


NO CARB (This unit is not for sale in the state of California)
This unit is also not for sale in the state of NJ and PA

Assembly Information

 Our vehicles come 90% assembled at the factory and fully tested prior to shipping. This vehicle requires some minor assembly. May include: handle bar brackets, front and rear wheels, front and rear racks (if included), and battery. (May differ per model)



Speed Controller (Governor)

This will allow you to choose how slow or how fast the quad goes, it can be adjusted down to 5 mph, You can continue to adjust the speed as your child gains more experience and skills.

; providing comfort to parents.

Kill Switch

With one press of the button, it automatically kills the engine, easy to reach and right at your fingertips. So your child can stop easily.

Electric Start

Traditional ATV only comes with a Kick Start which makes it hard sometimes to start your ATV, With our ATV, you can start your ATV electrically, by a push of a button. Quick and easy to start.

Front Drum Brakes:
Powerful and durable drum brake provides excellent braking at any speed; giving you the safety you need.

Rear Hydraulic Disc Brakes:

Ideally designed with children in mind. will provide added braking power for extra safety and protection.

Front Double a-arm and Rear single arm suspension

With the dual suspension, you are in for a more smoother ride. Improves the quality and feel of your vehicle in motion.

Semi Automatic Transmission With Reverse

Allow you to conveniently switch gears without the clutch, also comes with reverse gear.

Padded Seating

Better riding experience with a roomy, nice and spacious cushioned seating.

Front Bumper

In the case of any impact, this front bumper guards your ATV against unwanted damage.

Rear Luggage Rack:
This provides an added storage space. Pack it up and take it with you.

Featured Headlight, Brake, and Taillight:
For riding at night. These features provide better visibility from front to back.


  • 125cc ATV Front Bumper Guard
  • 125cc ATV Front Double A-Arm
  • 125cc ATV Front Coil Over Shock
  • 125cc ATV Front Independent Drum Brake


  • 125cc ATV Rear Center Drilled Disc Brake
  • 125cc ATV Rear Coil Over Shock


  • 125cc Left Side Engine View


  • 125cc ATV Rear Driving Shaft View


  • 125cc ATV Taillight View
  • 125cc ATV Rear TurnSignal Light View


  • 125cc ATV Front Headlight View
  • 125cc ATV Front Headlight Guard
  • 125cc ATV Front Turn Signal View

Shipping Rate FREE
Assembly 85% Assembled (Installation require on varies bolt-on items)
Engine Air cooled,Single cylinder,4 Stroke
Engine Type (ml) 125
Starter Electric
Battery Type 12V/7Ah
Gear Semi Automatic
Transmission Chain Drive
Ignition CDI
Max Power 7.45 HP /7500r/min
Max Torque 8.0N.m/5500r/min
Climbing Ability 15°
Cooling System Air cooled
Controls Electric Start, Kill Switch
Kill switch Yes
Speed limiter Yes
Fuel Type Gas
Frame High Strength Steel
Ground Clearance (inch) 5.3in
Wheelbase (inch) 44.8in
Brakes Front Drum
Brakes Rear Hydraulic Disc
Tires Front 21x7-10
Tires Rear 20x10-10
Front Suspension Double A-Arm with Coil Over Shock
Rear Suspension Coil Over Shock
Wheel Size 10 Inch
Weight Capacity (lbs) 143 lbs
N.W. (lbs) 282lbs
Overall Length (inch) 67.1in
Overall Width (inch) 39.9in
Overall Height (inch) 38.8in
Seat Height: (inch) 30.7in
Owner's Manual Yes
Tools Kit Yes
CARB Approved Yes
MCO(Title) Yes
Low Price Guarantee Yes

Your order gets Free lift-gate delivery.

  • Delivery times depend on which one of our warehouses closest to you has your item

Orders are processed and delivered Monday-Friday (excluding public holidays)