O.S Engines Pro modified .21 VZ-B V-Spec
New from O.S Engines, is the pro modified version of the .21 VZ-B V-Spec, which sports special enhancements for exceptional performance. Every upgrade to the engine is done by hand in the U.S. by a skilled technician, and all for the aspiring racer who wants a performance advantage over the competition running stock. The upgrades include a hand selected and matched piston and liner, a drilled out cylinder head for lighter weight and better cooling, the engine gets a ceramic rear bearing, while a special coating on the lightened crankshaft prevents wear and finally tungsten weights in the crankshaft improve balance at higher RPMs.
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