Supertech Mazda Miata 1.8L Valve Spring Kit

Valve Spring Kit - 
Miata 1.8

• Spring seat: SEAT-TS/MA18I (16) + OEM Seat
• Seat pressure: ~63lbs @ 33.6mm installed height WITH OEM SEAT
• Spring rate: 9.4lbs/mm (239lbs/in)
• Spring coil bind: 20.7mm
• Max Net Lift: ~12.9mm

• Spring seat: SEAT-TS/MA18I (16)
• Seat pressure: ~75lbs @ 33.6mm installed height
• Spring rate: 9.6lbs/mm (244lbs/in)
• Spring coil bind: 20.00mm
• Max Net Lift: ~12.9mm

• Spring seat: SEAT-TS/MA18I (16)
• Seat pressure: ~84lbs @ 33.6mm installed height
• Spring rate: 12.1lbs/mm (307lbs/in)
• Spring coil bind: 20.7mm
• Max Net Lift: ~11.5mm