Precision O.S. Engine OS-1AS00 Speed 21XZ-GT Race Spec Engine  [OS-1AS00]

O.S. Speed 21XZ-GT: Precision Nitro for 1/10

The O.S. Engine OS-1AS00 Speed 21XZ-GT is engineered for racers who prioritise consistent power delivery and accurate throttle feel. It is a compact nitro unit suited to 1/10 scale competition models.

Machining Quality and Component Fit

Careful machining ensures the O.S. Speed 21XZ-GT has tight clearances and predictable mechanical behaviour. The result is an engine that responds well to setup changes and stays stable over multiple runs.

Controlled Powerband and Response

The design aims to offer a usable torque curve and smooth top-end characteristics so drivers can exploit traction and gearing without abrupt surges. Throttle modulation is straightforward for fine adjustments on track.

A Practical Option for Competitors

For those competing regularly, the O.S. Speed 21XZ-GT provides a sensible mix of serviceability and performance. With standard care it delivers repeatable lap-to-lap behaviour.

The O.S. Speed 21XZ-GT is a well balanced engine for serious hobbyists and club racers seeking dependable nitro performance in 1/10 models.