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

Track-Ready Performance from the O.S. Engine 21VZ-B V-Spec AL

The O.S. Engine 21VZ-B V-Spec AL brings precise manufacturing and reliable output to serious hobbyists. It is preferred by users who need a dependable engine for both practice sessions and race day.

Aluminium Design with Focus on Cooling

Built with aluminium components to aid heat transfer, the 21VZ-B V-Spec AL keeps operating temperatures down during long runs. This improves consistency across multiple heats and reduces the risk of heat-related wear.

Components Calibrated for Consistent Power

With a carefully tuned slide carburetor and a matched exhaust arrangement, the engine produces even throttle response and clean acceleration. The balanced crankshaft reduces shake, helping suspension and steering stay predictable at speed.

This engine suits pilots upgrading to higher performance levels who want a consistent, well-built powerplant for competitive 1/8 scale running.