Supertech Valve Spring and Retainer Kit (Single Spring) Ford/Mazda Duratec 2.0L/2.3L inc. Mazdaspeed 3 2007-2013 / Mazdaspeed 6 2006-2007

MSRP: $535.96
(You save $107.19 )
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-Supertech 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 arewell under control.
-The retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.

  • Type: Single Spring
  • Press.Seat: 55 @ 35
  • Press.Open: 150 @ 10
  • Max Lift: 14.3mm
  • Coil Bind: 20.7mm
  • Rate: 9.6mm
  • Retainer: RET-TS5.5/T1+Fact Seat + SEAT-DUR1
  • OutSpr.OD: 27.5mm
  • OutSpr.ID: 20mm


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  • 5
    supertech A+++

    Posted by whitespeed on 16th May 2014

    im now interested to try the difference at hight rpm how they work !!!