Building 104 EAST, Aston Down Business Park, nr Stroud, Glos, GL68GA

  01285 760707


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Supertech 18t-Spring Retainer Valvetrain kit




Product ref : SPRK-AUDI1.8T

Kit includes:

  • 12 Precision wound intake valve springs
  • 8 Precision wound dual exhaust valve springs
  • 12 Titanium intake retainers
  • 8 Titanium exhaust retainers

VAG group 1.8T engines with 5 valves per cylinder:
Audi A3, A4, A6, S3, TT / VW Golf, Passat, Sharan / Skoda Octavia / Seat Alhambra, Ibiza, Leon, Toledo - 1.8T 20V

Spring data:
Seat pressure: intake - 60lbs @ 36.60mm, exhaust - 80lbs @ 33.20mm
Spring coil bind: intake - 23.00mm, exhaust - 19.50mm
Max lift: intake - 13.60mm, exhaust - 13.70mm
Rate: intake - 6.70lbs/mm, exhaust - 10.00lbs/mm
Intake single spring:
Outer diameter - 20.60mm
Inner diameter - 14.40mm
Exhaust double spring:
Outer spring outer diameter - 29.10mm
Outer spring inner diameter - 21.90mm
Inner spring outer diameter - 20.50mm
Inner spring inner diameter - 15.50mm

Supertech valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue. They utilize computer software to ensure that the harmonics are under control. All Supertech valve springs are made with premium super clean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms. Using high quality steel alloy also provides the added benefit of better structural memory for all of their springs, giving your performance racing engine a serious competitive advantage.

Supertech retainers are manufactured with high quality military certified Titanium alloy, and are CNC machined for a tight fit. Their high quality retainers are among the best in the industry.