COMP Cams Ford 5.0L Coyote Valve Spring Kit O.D. .959in

If you're working on the 5.0L Coyote or Boss engine in your 2011-2017 Ford F-150 or Mustang, this COMP Cams valve spring kit is designed to handle more aggressive camshafts and higher engine speeds. Stock springs can sometimes struggle to keep up when you're pushing the engine hard, especially at higher RPMs, leading to less precise valve control. This kit addresses that by providing stronger springs that are better matched to performance cams.

This kit uses a beehive spring design, which is known for its efficiency and ability to work well with lighter retainers. The springs are rated for 93 lbs of seat load at 1.57 inches and 198 lbs of open load at 1.02 inches, with a spring rate of 191 lbs/in. This setup allows for a maximum valve lift of .550 inches, which is a notable increase over stock, giving you more room for performance camshafts. The outer diameter of the main spring is .959 inches, and the coil bind height is .952 inches, ensuring proper clearance within the cylinder head. COMP Cams has a solid track record with modular Ford engines, and this kit is built to complement that performance heritage.

When you order this kit, you're getting everything needed for the job: 32 springs, 32 retainers made from chromemoly steel, 32 valve seats, and 32 seals. This complete package means you won't be scrambling for extra parts during your build. It's a well-built solution for anyone looking to get more out of their Coyote or Boss 5.0L engine, especially if you're planning on installing performance camshafts or frequently operate the engine at higher RPMs.