Supertech Dual Valve Springs Kit Miata BP 177 lbs

• Outer Spring O.D.: 27.50mm
• Outer Spring I.D.: 20.00mm
• Inner Spring O.D.: 20.00mm
• Inner Spring I.D.: 15.20mm
• Seat: 74 @ 34.20 (lbs@mm)
• Open (lift): 177 @ 10.5 (lbs@mm)
• Max net lift: 13.00mm
• Coil bind: 20.70mm
• Rate: 12.10 lbs/mm

Retainer P/N: RET-TS60/MA2 + (16) SEAT-TS/MA18I+OEM (use '97 + Cotters)

Note: This is for a complete set of dual intake and exhaust valve springs, & retainers and spring seats.

** Images shown may vary from actual product **