Bronze Valve Guide Set, 6.5mm Honda GX390
Bullfrog Performance Products bronze valve guide set will fit the Honda GX340, GX390 and many other big block clone engines with factory diameter valve stem size of 6.5mm. Our bronze valve guide will outperform in longevity and performance over the factory steel guide. Has closer to the same heat expansion rate as aluminum head for a more stabil valvetrain operation. These are sold per valve guide so order two for replacing guides in head intake and exhaust!
Air Filter, Angled 4" Long x 2 7/16" ID
Small engine racing air filter for use in many applications including go karts, mini bikes and many other off road applications.
Aftermarket air filter for the Predator 212cc, Honda GX390, Clone engines when using our air filter adapters with 2 7/16" OD. This air filter is an aftermarket version of the K&N cotton gauze design. Be sure not to forget our air filter oils and cleaners to keep your air filter performing at its best.
Cylinder Block, 460cc 10 Bolt 92mm Bore
Bullfrog Performance Products 92mm 460cc cylinder block. Our block features a 10 bolt side cover and a tall deck to allow for even more stroke without the piston popping up above the deck. Our cylinder block accepts all Honda GX390 internals, including camshaft, lifters and cranks seals.
Forged Piston Kit, Predator 212cc Hemi
Forged piston kit fits Predator 212cc Hemi engines. This forged piston fits the standard 70mm cylinder bore diameter. Our forged piston kit fits ARC Racing billet connecting rods part numbers 6254 and 6256 rods with the Predator 212cc standard wrist pin diameter. This forged piston kit will give your engine an 11:0:1 compression ratio with no other modifications. Kit comes with the forged piston, Total Seal low drag ring set, wire lock wrist pin locks and tool steel wrist pin.