Bullfrog Performance Products header flange fits Predator 670cc engines.  Great item for the DIY person who wants that custom header design.  Order a quantity of two for the Predator 670cc engine.

Bullfrog Performance Products copper head gasket fits the harbor freight Predator 670cc 22hp engine.  The cylinder bore size on this gasket is 80mm bore and is .032" thick.  Order 2 for complete engine head gasket replacement.

Bullfrog Performance Products copper head gasket fits the harbor freight Predator 670cc 22hp engine.  The cylinder bore size on this gasket is 89mm bore and is .032" thick.

Bullfrog Performance Products V-Twin 2 into 1 collector kit will work with our Honda GX670 / Predator 670cc and Honda GX630/GX690 V-Twin header kits

Our header kit will fit the Predator 670cc Harbor Freight engines. Our kit comes unassembled so you can custom fit the header tubes for your application. Our header flanges are TIG welded to the header stub tubes so you can adapt the rest of the kit according to your application. Our header kit features 1 1/4" O.D. header tubes all the way through the kit to provide more flow that your V-Twin engine needs.
Be sure to checkout our 2 into 1 collector that works with this V-Twin header kit.

Bullfrog Performance Products billet connecting rod set is manufactured from billet 7075 T-6 aluminum. Our connecting rods include rod bearings and setup with ARP rod bolts. Our billet rod has a center to center length of 4.440". Our rods will increase piston dwell time at top dead center and increase mid range and top end HP!
****Our Predator 670cc billet rods WILL require cylinder block machining because of our stronger beam design****