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. Br363.67 Add to Cart The item has been added Compare