Supertech Beehive Valve Springs for a BMW / M42 - 12.80lbs/mm

Upgrade your valvetrain with Supertech beehive valve springs for a BMW / M42, rated at 12.80lbs/mm for high RPM stability, precision, and extreme durability.

Attributes
Free Length	42.70mm
Coil Bind	20.70mm
Rate	12.80lbs/mm
Outer Spring Id	21.85mm
Inner Spring Od	20.50mm
Inner Spring Id	15.50mm

Specs
Outer Spring Id	21.85mm
Inner Spring Od	20.50mm
Inner Spring Id	15.50mm
Coil Bind	20.70mm
Rate	12.80lbs/mm