O.S. Engine 21VZ-B V-Spec AL Competition Nitro Engine  [OS-13897]

Power and Precision from O.S. Engine 21VZ-B V-Spec AL

The O.S. Engine 21VZ-B V-Spec AL combines precise machining and consistent output to meet the demands of club and regional racing. Enthusiasts appreciate its reliable power curve and durable construction when pushed on race day.

Racing-Proven Aluminium Build

O.S. Engines are known for attention to detail, and the 21VZ-B V-Spec AL uses aluminium components to reduce weight and improve heat dissipation. That solid construction helps keep temperatures in check during extended runs and supports long term durability.

Tuned Systems for Track Control

The engine pairs a slide valve carburetor with an optimised exhaust layout to produce responsive throttle feel and steady acceleration. A precision-balanced crankshaft lowers vibration, helping driveline components stay stable at high revs.

For racers wanting a proven nitro choice, the O.S. Engine 21VZ-B V-Spec AL offers a blend of performance and build quality that suits competitive 1/8 scale applications.