Oil fill plug fits Honda GX240, GX270, GX340, GX390, 440cc and 460cc big block engine.

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!

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.

Honda GX390 side cover gasket.  Fits all 7 bolt GX390 engines and 7 bolt 420cc big block engines.

Performance air filter that fits Predator 212cc, Clone and Big Block applications with an air filter adapter with 2 7/16" diameter adapter.

ARC Racing billet connecting rod for Honda GX390 engines.  Includes rod bearings and rod bolts.

ARC Racing billet connecting rod for the Honda GX390.  This rod is 4.450" center to center length and comes with rod bearings and rod bolts.