Supertech Single Valve Spring and Retainer Kit (DSM / Evo 4G63)

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$397.97 $497.35Instant Savings of 20% ($99.38)

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Valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control.

Single Valve Spring Specs:
  • - Outer Spring O.D.: 28.10mm
  • - Outer Spring I.D.: 20.00mm
  • - Seat Pressure: 76 @ 39.6
  • - Open (lift) Pressure: 200 @ 11.5
  • - Max Lift: 14.90mm
  • - Coil Bind: 24.70mm
  • - Rate: 10.50 lbs/mm

The Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.

Customer Reviews

Based on 1 review
Manuel serrano
Supertech valve springs and retainers

Phenomenal, after reading many forums many people recommended these for cam upgrades they went in with my Kelford 272 and they are great no issues what so ever the quality is very impressive and shipping was overall great and fast!