Piper Valve Springs for Bmc B Series 18V Model Post 71 VDSB2

BMC B SERIES 18V MODEL POST 71
BMC B SERIES PRE 71

Manufacturer: BMC
Rate N/mm: 40
Rate Lbf: 228
Seat Pressure Lbf: 130
Seat Pressure Kg: 59
Fitted Length mm: 38
Nominal Internal Diameter: 18.6
Nominal Outside Diameter: 33.2
Crush Height mm: 23.78
Spring Type: Double
Product Type: Valve Springs