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COMP Cams 999-4 Dual Valve Spring Assembly 1.550 in. H-11 Tool Steel

Manufacturer

Picture for manufacturer COMP Cams

Part Number

999-4
9 reviews
Sale Price

$140.95

Estimated ship date Friday, November 20

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Product Details

The COMP Cams 999-4 is a dual valve spring assembly engineered for high-performance street and racing applications. Manufactured from H-11 tool steel Super Clean wire, these springs are built to deliver superior strength, durability, and valvetrain stability under extreme operating conditions. Each spring undergoes extensive quality control testing to ensure consistent performance and long service life.

The dual spring design provides a stronger valve spring assembly capable of handling the increased valve lift demands found in aggressive cam profiles and high-RPM applications. COMP Cams pre-sets these springs for initial load loss, ensuring they maintain accurate pressure specifications throughout their service life.

Key Features:

  • Spring Type: Dual (inner and outer)
  • Outer Diameter (Top): 1.185 in. / Outer Diameter (Bottom): 1.589 in.
  • Inner Diameter (Top): 0.731 in. / Inner Diameter (Bottom): 1.135 in.
  • Seat Pressure: 155 lbs. @ 1.880 in. installed height
  • Open Pressure: 377 lbs. @ 1.280 in.
  • Coil Bind Height: 1.230 in.
  • Spring Rate: 370 lbs./in.
  • Material: H-11 tool steel Super Clean wire
  • Pre-set to minimize initial load loss
  • CNC machined for precision and consistency
  • Backed by COMP Cams' 1-year limited warranty

Ideal for engine builders and racers demanding proven valvetrain control from street builds to competition engines.

Item shipped 5 days after order was placed. Worth the wait for the great price however. Order Number: 18722

very nice.

I was shopping for a bed cover for my truck and found that autoplicity had the lowest price when I was ready to buy. After I placed the order, I got an email notifying me that my order was shipped and got a tracking number. Seamless transaction so far. Very happy.

Good selection, easy installation. The only problem was the stake pocket bolts for my 2015 F150 had to be modified. They were too long. Not sure why. I was positive that I selected that year when I ordered.

I found them doing a search for a clutch kit, they are hands down one of the easiest companys to work with and the prices cant be beat..... I looked everywhere

The best prices and fast shipping!

GREAT PRICES AND COMMUNICATION!!!! HIGHLY RECOMMENDED STAFF AND PRODUCTS!!!!!

Purchase process an amount of time from purchase, an product being shipped is short an sweet!

Autoplicity had the best price on the item on the ski rack I needed! I ordered it on a Friday and it was delivered the following Wednesday.

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