O.S. ENGINES SPEED TUNED .21 VZ-B V-SPEC AL ENGINE
A new version of a popular powerhouse! An aluminum heat sink head combined with special factory tuning makes this a more efficiently cooled .21 VZ-B V-Spec competition engine! The specially coated crankshaft features a precision ceramic bearing that greatly reduces friction plus a Tungsten weight for added balance. A double adjustment carb allows for […]