Kyosho Ultima RB7SS Stock Spec Competition Buggy

Kyosho Ultima RB7SS Stock Spec Competition Buggy

If you’re into spec racing, Kyosho has released a version of their RB7 buggy for stock motor class competition. The Ultima RB7SS Stock Spec kit is a 1/10-scale, two-wheel-drive competition buggy kit featuring lightweight internal components and an array of updated elements.

Among the updated pieces are lightweight, aluminum driveline elements which aim to reduce rotating mass. Weight has also been reduced from the front axles, thanks to their anodized aluminum construction.

Kyosho Ultima RB7SS Stock Spec Buggy Kit - Rear

Along with the reduced weight, the kit includes a 72T spur gear in an effort to harness as much power from your stock spec motor as possible. A lightweight, cab-forward style body and lightweight wing are also included in this kit.

Kyosho RB7SS Specs:

  • Length: 395mm
  • Width: 249mm
  • Height: 148mm
  • Wheelbase: 277mm
  • Track width:
    • Front: 221mm
    • Rear: 201mm
  • Transmission ratio: 2.6:1

Kyosho Ultima RB7SS Stock Spec Buggy Kit - Chassis

This kit will require the following additional items for completion:

  • 2.4GHz radio system, two or three-channel (transmitter and receiver)
  • Motor
  • Steering Servo
  • Electronic Speed Control (ESC)
  • Batteries (buggy and radio transmitter)
  • Wheels, tires, and foam inserts
  • Polycarbonate body paint
  • Assembly tools

Priced at $359.99, the Kyosho Ultima RB7SS competition buggy will be available online and through your favorite Kyosho dealer. Visit for additional details on this R/C buggy kit.

Image credit: Kyosho