A kit with twelve double valvesprings for B30 kit with our special steel retainers
NOTE: Measured including 3mm thick valve washer (SVF1323)
680N @ 44mm
830N @ 40mm
1000N @ 36mm
12200N @ 32mm
1400N @ 28mm
Coilbind 26mm including valve washer
Outer spring
Thread thickness approx. Ø4mm
Outer diameter approx. Ø32.2 mm
About 57mm high
Inner spring
Thread thickness approx. Ø2.7 mm
Outer diameter approx. Ø24mm
About 54mm high
on B18/B20/B30 required spring seat modification to fit springs