Coolster
Coolster GK-6125 Two Seat Go-Kart
Coolster GK-6125 Two Seat Go-Kart
SKU: GK-6125-BLACK
- Regular price
- Price: $1,799.00
- Regular price
- List Price: $2,099.00
- Sale price
- Price: $1,799.00
- Unit price
- per
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Low stock: 5 left
PRODUCT DESCRIPTION
Two seats, a roll cage, reverse, and a seat that sits 12 inches off the ground. Nobody falls off a go-kart.
| Rider | Youth with an adult, or family |
|---|---|
| Seat height | 12.6 inches (320 mm), seated in a cage |
| Transmission | Fully automatic with reverse |
| Parental controls | Roll cage and seat belts. No speed limiter published, so an adult rides along until you trust the driver. |
Rider age is our recommendation, not the manufacturer's. Coolster does not publish a recommended age for this model, and we would rather give you our honest read than leave the row blank. Seat height and transmission are straight off their spec sheet. Our size guide walks the whole thing through in two minutes.
This is the machine we point nervous parents at, and it is the machine that gets ridden the most in families with more than one kid. Four wheels, a cage, belts, and a driver who cannot come off it.
Automatic with reverse, which matters more than it sounds: a kid who gets wedged against a fence can back out without an adult walking over to rescue them.
Who this one is for
Families. A parent rides along for the first month, then a sibling rides along after that. Works for a timid rider who is not ready for two wheels, and for a confident one who just wants to go fast with a friend.
What you get
- 120cc single cylinder four stroke, air cooled
- Fully automatic with reverse
- Electric start
- Two seats side by side inside a roll cage
- Hydraulic disc rear brake
- 16 x 8.00-7 front and 17 x 7.00-8 rear tires
- Four colors: Black, Blue, Red and Green
Specifications
| Model Number | GK-6125 |
|---|---|
| Engine Type | 120CC Single cylinder, 4-stroke, air-cooled |
| Displacement | 120cc |
| Max Torque | 6.9N.m/6000r/min |
| Max Power | 5.5kW/8500r/min |
| Ignition | CDI |
| Starting System | Electric |
| Clutch | Automatic with reverse |
| Transmission | Chain, Rear wheel drive |
| Brakes Front/Rear | Hub / hydraulic disc |
| Tires Front/Rear | 16 x 8.00 - 7 / 17 x 7.00 - 8 |
| Fuel Capacity | 3 L |
| Height to Seat | 320 mm / 12.6 inches |
| Min. Ground Clearance | 105 mm / 4.1 inches |
Every figure above is copied from Coolster's own published specification table for model GK-6125, read on 28 August 2026. Where a metric value was published we added the imperial conversion in brackets and changed nothing else. Manufacturer reserves the right to change specifications without notice.
Questions people actually ask
Can an adult fit in the passenger seat?
Yes, for most adults, and that is the point of buying it. A parent rides along until the driver is trusted, then a sibling or a friend takes the seat.
Does it have reverse?
Yes, automatic with reverse. Which matters more than it sounds when a kid noses into a fence.
Is there a speed limiter?
Coolster does not publish one for this model and we are not going to claim one exists. The controls on a two seat kart are the belts, the cage and the adult in the other seat. If a governor is a must have for you, tell us and we will ask the distributor before you order.
What terrain does it handle?
Flat to gently rolling. Grass, gravel, hard pack, a field. With 4.1 inches of ground clearance it is not a woods machine and it will not follow a dirt bike down a single track.
Before you buy
- Shipping and freight: free to the lower 48, curbside with a liftgate included, and exactly what to do if the crate arrives damaged.
- Assembly and setup: the one to two hours between the crate and the first ride.
- Warranty: what is covered, what counts as a wear item, in plain English.
- Safety first: gear, rules and supervision. Please read this one.
- Compare all 13 machines on rider age, seat height, real displacement and machine weight, on one page.
We would rather sell you one machine your family enjoys for years than rush you into the wrong one. Not sure about size? Run the Rider Fit Finder, or just call us. Nobody here works on commission.
