Brian Crower Honda K20A, K20Z, F20C & F22C - High Lift Valve Spring - Dual Valve Spring, Titanium Retainer & Seat 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.

WARNING: If running a late model cylinder head (after 2004), you may need to purchase BC2940 keepers to accommodate the BC2010 or BC2011 retainers. Honda changed the keeper groove angles, therefore your stock keepers/locks may not fit the BC retainers properly causing potential damage.

Type    BC1040T Dual
Free Length    2.030"
Seat    1.590" @ 92 lbs
Open    1.020" @ 270 lbs
Coil Bind    0.870"
Retainer    BC2010
Spring Seat    BC2904
Net Cam Lift    0.620" / 15.74mm