Dual Valve Springs for 1994-2005 Mazda Miata 1.8L BP Engines
Set of 16 Dual Valve Springs
SPR- MM18D
Outer Spring: OD 27.50mm - ID 20.00mm
Inner Spring: OD 20.00mm - ID 15.20mm
Type: Dual Spring
Press.Seat: 89lbs @ 33.6mm
Max Lift: 12.90mm
Coil Bind: 20.70mm
Rate: 12.10mm
Note: These Dual Valve Springs require the use of Supertech Retainer Part # RET-TS60/MA2 & SEAT-TS/MA18E and OEM seat - (Sold Separately)
Our valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue. We also utilize computer software that allows us 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 our springs, giving your performance racing engine a serious competitive advantage.
Set of 16 Dual Valve Springs
SPR- MM18D
Outer Spring: OD 27.50mm - ID 20.00mm
Inner Spring: OD 20.00mm - ID 15.20mm
Type: Dual Spring
Press.Seat: 89lbs @ 33.6mm
Max Lift: 12.90mm
Coil Bind: 20.70mm
Rate: 12.10mm
Note: These Dual Valve Springs require the use of Supertech Retainer Part # RET-TS60/MA2 & SEAT-TS/MA18E and OEM seat - (Sold Separately)
Our valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue. We also utilize computer software that allows us 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 our springs, giving your performance racing engine a serious competitive advantage.