Part number SPRK-H1005D-BM
Supertech valve double spring kit
BMW - 2.5 2.8 3.0 (M50 (only with 6mm valves!), S50 S52 (USA), M52, M54)
Spring data:
Seat pressure - 94lbs @ 35.70mm
Open (lift) pressure - 209lbs @ 10mm
Spring coil bind - 20.70mm
Rate - 11.50lbs/mm
Max lift - 15.00mm
Outer spring outer diameter: 29.65mm
Outer spring inner diameter: 21.85mm
Inner spring outer diameter: 20.50mm
Inner spring inner diameter: 15.50mm
Set includes:
Dual springs: 24 pcs. SPR-H1005D-BM
Titanium retainers: 24 pcs. RET-AU5VE-T1
Seats: 24 pcs. SEAT-BM60