Quick view ARC Racing (2) Pack of GX240/GX390/Predator 420 Heavy Duty 50# Valve Springs 2 Pack of Heavy Duty Valve Springs for Honda GX240, GX270, GX340, & GX390.Approx 50 lbs at 1.125 installed height, 42lbs at 1.2, with 110 lb open pressure (.375 lift). $12.99 Add to Cart
Quick view 1.2 Ratio Rocker Arms, Roller, Shaft Mounted, Billet Steel, GX390 Predator 420 Non-Hemi Rocker Arms, GX390, Predator 420 Non-Hemi, Shaft Mounted Roller.Super Strong economical alternative to the Aluminum Rollers. 1.2 Ratio These rockers require a shorter pushrod at 5.620". Typically 0.100" shorter than stock. This is also dependent upon if... $129.99 Add to Cart
