Brian Crower Mitsubishi 4G63/Evo VIII/Evo IX Spring/Steel Retainer Kit BC0100S

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	BC2100S
Spring Seat	OEM
Net Cam Lift	0.520" / 13.2mm