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Header Flange for Honda GX670 Engines Bullfrog 850cc Swamp Boat Engine
Bullfrog Performance Products header flange fits Honda GX670 engines.  Great item for the DIY person who wants that custom header design.  Order a quantity of two for the GX670 engine. Bullfrog Performance Products 850cc V-Twin engine is a perfect upgrade for your  mud motor.  Our 850cc swamp boat engines are machined, blueprinted, and assembled here in the United States by our expert engine builders.  This engine is a governed system to you don't have to continually alter the throttle lever when the load varies.  The rpm range of this engine package is 1200 rpm to 5000 rpm.  To get our engines to be dependable at higher engine rpm's is our custom billet connecting rods and babbit bearing setup the first in the industry!  Our billet connecting rods are longer than stock and include ARP rod bolts.