Prime Karts Rumble Seat

The Prime Karts Rumble Seat is the easiest way to turn a big-kid kart into a true family ride. It gives younger kids a safe, secure place to sit so they can ride along while an older rider handles the pedaling and steering. No kid gets left behind, and the whole backyard crew stays together.

Why Families Love the Rumble Seat

• Ride-along seat for younger kids: Designed for smaller children under 45 lb
• Bridges the age gap: Great for older and younger siblings, or a parent and a little rider
• Built for Prime Karts “large karts”: Fits the XL-4, XL-4 PRO, and XXL-4 tandem frames
• More fun per ride: Turns one kart into a shared experience instead of taking turns

How Many Can You Add?

• XL-4: Add one Rumble Seat
• XXL-4 tandem: You can add two Rumble Seats

Tip: This is one of the best upgrades for families with mixed ages because it keeps everyone rolling together.