Big Block GX390 and Clone - Keepers - GX390-Predator420-Duromax 440-Wildcat460-GX500

Steel high groove keeper for 6.5mm valves aftermarket race valves and stock valves with single groove for automotive style retainers and keepers. 

Not for use stock Honda GX390 valves

Sold in sets of four

Works with our billet aluminum retainers and 65lb dual springs. 

Also fits Zongshen GB620 engines.