O.S. Engine OSMG2070 Speed Tuned 21VZ-B V-Spec II World Edition Competition Motor  [OSMG2070]

High Rev Response from O.S. Engine OSMG2070 Speed Tuned 21VZ-B V-Spec II World Edition

When every lap counts, the O.S. Engine OSMG2070 Speed Tuned 21VZ-B V-Spec II World Edition offers controlled power delivery and tuned efficiency. It is built to deliver reliable RPM stability and lower fuel consumption during extended race sessions.

Built Components and Design Notes

This variant features a hardened chrome-plated 4-port liner and a specially coated crankshaft for longer service life. A rear ceramic bearing lowers friction while the silicone-filled crankshaft smooths air and fuel passages to improve combustion consistency.

Proven on the World Stage

That performance was showcased in competition, including Atsushi Hara's 2008 world championship win, where the engine's runtime and economy reduced pit stops compared with rivals. Those results underline the 21VZ-B's race-oriented design.

Carburetor Choices and Balance

The engine includes the 21JS slide-valve carburetor and three restrictor sizes (6 mm, 6.5 mm and 7 mm) so racers can tune for track conditions. Tungsten balancing weights help maintain crank stability at high revs for crisper throttle feel.

The O.S. Engine Speed Tuned 21VZ-B V-Spec II World Edition is aimed at experienced drivers who prioritise steady lap times and efficient fuel use across race distances.