Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures.

Type
BC1070 IN/BC1089 EX

Free Length
2.231"

Seat
1.975" @ 58 lbs

Open
1.500" @ 154 lbs

Coil Bind
1.320"

Retainer
BC2070

Keepers
BC2940

Net Cam Lift
0.490" / 12.45mm