Spring, Valve, Heavy Duty, set (Fits 240, 270, 340, & 390s).
Approx 48lb at 1.15",
1.57" Free Height
THESE SPRINGS ARE HIGHLY-RECOMMENDED WHEN REMOVING YOUR STOCK GOVERNOR! Without them, the engine will not rev much past 4500 and the stock valves will float, eventually causing engine damage. These springs are sold as a set
