Reinforced Valve Springs BMW M3 E30 S14B23 S14B25

The reinforced springs kitSUPERTECHis composed of16 Springs, 16 cups and 16 seatsand the kitCATCAMSis composed of16 Springsand 16 cups.

Technical characteristics

• Springs type: double
• Outside diameter Spring inside: 20.50 mm
• Inner diameterIndoor spring: 15.50 mm
• Spring outer diameteroutside: 29.65mm
• Inner diametersprings outside: 21.85mm
• Tare / Length mounted: 40.82kg @ 35.50mm
• Tare / lift: 92.99kg @ 10.00mm
• Max lift: 14.80mm

Supertech Valve Springs are made from high quality chrome silicon vanadium steel alloy. This alloy has the advantage of offering superior performance and reliability, especially at high speeds, and has better structural memory. Supertech Reinforced Valve Springs are computer designed to ensure harmonics remain under control and stress levels remain within material fatigue diagrams.

The Supertech cups are made of titanium alloy and machined by numerical control in order to obtain the best fit.

Technical characteristics

• Springs type: double
• External diameter Spring internal: 23.20 mm
• Inner diameterIndoor spring: 17.40 mm
• Spring outer diameteroutside: 30.70mm
  
• Inner diametersprings outside: 23.10mm
  
• Tarage springs: see below
  
• Cup material: steel

The eXPertise of Catcams on Camshafts and its accessories (Valve Springs, Mechanical Tappets, Adjustable Pulley, etc.) has been recognized worldwide for several years thanks to its know-how and precise study of engines and Applications. Indeed, each Camshaft Profile and Springs calibration have been developed according to the specificities of each engine but also according to the use/Applications (road, Sport, rally, run, circuit, etc.).

Depending on the Models, the Catcams Springs cups are made of steel or Aluminum.