CHECK OUT OUR NEW SELECTION OF DUROMAX 500 PARTS HERE!
CAST SMALL BLOCK SIDE COVERS AND FORGED 58MM CRANKS ARE BACK IN STOCK!
236cc SHORT BLOCK KITS IN STOCK STARTING AT $347! CLICK HERE!
Big Block Clones LLC
Couldn't load pickup availability
Rato R500D Cylinder Head Bare Casting - Fits GX390/420/440/460/500cc Rato R500N Engines
Does not fit R500-V (Duromax 500 2nd Generation)
Includes steel seats and guides.
Uses 5.5mm stem valves and shaft mount rockers.
Has GX390 style 53mm intake flange and GX390 head bolt pattern.
Hemispherical chamber
