The proposed Classic Lime design pairs jagged REX lettering with an emerald dinosaur, yellow eyes and teeth, and subtle scale texture. Matching seat-edge accents connect the look to the REX XM-4.

The design is being finalized. Sign up for updates or call River City Play Systems to register your interest and learn more.

The XXL-4 PRO offers a unique riding experience by allowing two people to enjoy the adventure together. It's a favorite for families with younger children who want to ride with an older sibling or parent, and it's also a great choice for campgrounds and large properties where shared rides make the experience even more memorable.

Prime Karts offers several platforms designed for different rider sizes, household needs, and levels of use. Start by considering who will ride the kart, whether one or two riders need to ride together, and whether it will be used at home or in a higher-use setting.

XM-4

The XM-4 is the smaller Prime Kart platform and is designed for younger or smaller riders. Its more compact size makes it easier for growing riders to reach the pedals, steer comfortably, and maintain control.

XL-4

The XL-4 is the most versatile single-rider option for residential use. Its adjustable seating accommodates older children, teens, and many adults, making it a strong choice for families who want one kart that can be shared by riders of different sizes.

XL-4 PRO

The XL-4 PRO is the higher-use option for commercial and rental environments. Choose this platform when the kart will be ridden frequently throughout the day or used somewhere that requires construction and warranty coverage intended for commercial use.

XXL-4 PRO

The XXL-4 PRO is the tandem option for two riders. Its side-by-side design allows riders to pedal and steer together, making it a good choice for couples, siblings, parents with children, and families who want a shared riding experience.

Choose the Right Fit

Age recommendations are a helpful starting point, but rider fit is more important. The rider should be able to sit comfortably, reach the pedals through their full rotation, steer without stretching, and maintain control of the kart.

Use the adjustable seat to find the correct riding position before use. Review the individual product specifications for exact rider recommendations and weight limits.

Residential or Commercial Use

The XL-4 is intended for residential riding, while the XL-4 PRO is the appropriate choice for commercial or rental use. Select the model based on where it will be used rather than appearance alone.

Review the individual product warranty before ordering to confirm that the model is approved for the intended setting.

Where It Will Be Ridden

Choose a kart suited to the rider and the intended riding surface. Prime Karts should be used on appropriate, relatively level terrain away from traffic, steep slopes, hazardous obstacles, and unsafe riding areas.

Tire style and terrain capability may vary by model, so review the exact product details before purchasing.

Accessories

Compatible accessories may be available for select Prime Kart models. Accessories are sold separately unless the individual product listing specifically states that one is included.

Always verify compatibility with the exact kart model before ordering.

Manufacturer: Prime Karts

Model: XXL-4

Recommended Age: 7 Years – Adult

Maximum Combined Rider Weight: 500 lbs

Configuration: Tandem (Two Riders)

Drive System: Pedal-Powered

Product Weight: 150 lbs

Residential Use: Yes

Commercial Use: Yes

Prime Karts provides a one-year limited warranty for the XM-4, XL-4 PRO, and XXL-4 PRO. These models are covered for qualifying private and commercial use when operated and maintained according to the manufacturer’s requirements.

Warranty Support

Warranty assistance is handled directly by River City Play Systems. If a covered issue occurs, contact our team with your order information, product details, and photos of the affected part.

We will review the issue, coordinate the warranty claim, and help arrange eligible replacement parts. Prime replacement parts are generally available quickly, helping minimize downtime when service is needed.

Warranty coverage applies to qualifying manufacturing defects and does not cover normal wear, misuse, improper assembly, accidents, or unauthorized modifications. Labor and installation are not included unless specifically stated.

XXL-4 FAQ

How many people can ride the XXL-4?

The XXL-4 is designed for two riders, allowing families and friends to enjoy the ride together, though two Rumble Seats can additionally be purchased increasing capacity for two more small children.

Does the XXL-4 have reverse?

Yes. The XXL-4 features a pedal-powered drivetrain with reverse.

Can it be ridden on grass?

Yes. Pneumatic all-terrain tires provide excellent performance on grass, dirt, gravel, and paved surfaces.

Does the XXL-4 require assembly?

Yes. The kart arrives partially assembled and includes assembly instructions.

Can the XXL-4 be used commercially?

Yes. Prime lists the XXL-4 as suitable for both residential and commercial use.

Is the seating adjustable?

Yes. The XXL-4 features adjustable seating positions to accommodate a variety of riders.