Brian Cower Subaru FA20/Toyota 4UGSE Dual Spring/Titanium Retainer Kit

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 BC1010 Dual
Free Length 1.607"
Seat 1.350" @ 80 lbs
Open 0.900" @ 220 lbs
Coil Bind 0.765"
Retainer BC2651
Spring Seat BC2939
Net Cam Lift 0.500" / 12.7mm

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