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 | BC1300 Single |
| Free Length | 1.690" |
| Seat | 1.325" @ 80 lbs |
| Open | 0.980" @ 158 lbs |
| Coil Bind | 0.810" |
| Retainer | BC2300S-24 |
| Spring Seat | OEM |
| Net Cam Lift | 0.460" / 11.68mm |