O.S. Engine 21RG-X (P) OS-13612 Pull-Start Buggy Motor  [OS-13612]

Getting to Know the O.S. Engine 21RG-X (P)

The O.S. Engine 21RG-X (P) combines strong high-rpm capability with a usable low-end for 1/8 scale nitro buggy use. The integrated pull start makes first-fit and field starts easier, reducing the setup hassle on event day.

Design Highlights and Powerband

With a 3.46cc displacement and a power rating of 1.9 BHP at 30,000 RPM, this engine covers a practical rpm spread from 3,000 to 32,000. That range provides the acceleration and top speed needed for both open circuits and tighter technical tracks.

Installation and Adaptability

Designed to bolt into a number of Kyosho 1/8 models, the 21RG-X (P) can be fitted to other platforms with straightforward firewall or mount adjustments. The pilot shaft crankshaft supports easier drivetrain alignment.

Care and Tuning Recommendations

Run recommended nitro fuel blends and make small carburetor adjustments to suit altitude and track surface. Regular inspection and timely replacement of the glow plug will keep starts crisp and combustion consistent.

For club racers and hobby tuners, the O.S. Engine 21RG-X (P) provides a compact, powerful option with simple starting and predictable tuning behavior.