This is the 21F used on the O.S. .21 VG-P Engine, OSMG2058.
FEATURES: Fully assembled and ready to install
Slide Valve design insures greater response at the beginning and end
of the power band for on-road racing
Cast aluminum body with steel adjustment screws
INCLUDES: 21F with gasket
REQUIRES: Installing on engine
jxs 01/21/09
ir/jxs
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