Клапани BMW B38 B48 B58 S58

Sport valve springs set from Ferrea made of high-quality steel with titanium spring discs for all S58 engines.

Supertech exhaust valve seals feature a special hi-temperature compound for improved durability.

Product detailed specification Model number TIVN-1058/MCIVN-1400S Head diameter 30.10mm Stem diameter 4.96mm Length 99.50mm Material Black nitrided stainless steel Fits for BMW / Toyota - Supercharged B38 / B48 / B58

Product detailed specification Model number TEVI-1058-HS/MCEVI-1400S-HS Head diameter 30.10mm Stem diameter 5.95mm Length 100.10mm Material Sodium filled Inconel/Nimonic alloy Fits for BMW / Toyota - Supercharged B38 / B48 / B58

Seat pressure - 77lbs @ 40.10mmOpen (lift) pressure - 180lbs @ 10mmSpring coil bind - 27.00mmRate - 10.30lbs/mmMax lift - 12.20mmOuter spring outer diameter: 26.50mmOuter spring inner diameter: 18.70mmInner spring outer diameter: 21.60mmInner spring inner diameter: 13.80mm Set includes:Dual springs: 16 pcs. SPR-FE20BETitanium retainers: 8 pcs. RET-BMB48/TE and 8 pcs. RET-BMB48/TI

Springs data:Seat pressure - 77lbs @ 40.10mmOpen (lift) pressure - 180lbs @ 10mmSpring coil bind - 27.00mmRate - 10.30lbs/mmMax lift - 12.20mmOuter spring outer diameter: 26.50mmOuter spring inner diameter: 18.70mmInner spring outer diameter: 21.60mmInner spring inner diameter: 13.80mmSet includes:Dual springs: 24 pcs. SPR-FE20BETitanium retainers: 12 pcs. RET-BMB48/TE and 12 pcs. RET-BMB48/TI