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 | BC1100 Single | 
| Free Length | 1.879" | 
| Seat | 1.550" @ 84 lbs | 
| Open | 1.000" @ 235 lbs | 
| Coil Bind | 0.935" | 
| Retainer | BC2100 | 
| Spring Seat | OEM | 
| Net Cam Lift | 0.520" / 13.2mm |