DJ-3055HD GX390 Heavy Duty Valve Spring (Sold Individually) (2) Valve spring single, heavy duty, set (Fits 240, 270, 340, & 390s). Approx 50 lbs at 1.125 installed height, 42lbs at 1.2, with 110 lb open pressure (.375 lift). Honda GX240 through GX390. $6.00 Add to Cart The item has been added Compare