Supertech Double Valve Spring Set | Renault F4R

Supertech dual valve spring set for Renault F4R 2.0 engines

All Supertech valve springs are made with premium Superclean 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.

Their 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 also utilise computer software that allows them to ensure that the harmonics are under control. This combined with their high quality steel alloy enables supertech valve springs to be more durable in extreme conditions, giving your performance racing engine a serious competitive advantage in both perforamnce and durablity.

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.

Supplied as a full set of 16 double valve springs, titanium retainers and lower seats (to fit over standard valve stem seals)

Specifications:

• Seat Pressure: 72lbs @ 34mm length
• Open Pressure: 168lbs @ 10mm lift
• Max Lift: 13.30mm
• Coil Bind: 20.70mm
• Rate: 9.6lbs/mm
• Inner Spring ID: 15.20mm
• Inner Spring OD: 20.00mm
• Outer Spring ID: 20.00mm
• Outer Spring OD: 27.50mm
• Manufacturer part number: SPRK-TS1012-F4R