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 |
BC1040 Dual |
| Free Length |
2.025" |
| Seat |
1.590" @ 80 lbs |
| Open |
1.110" @ 250 lbs |
| Coil Bind |
1.030" |
| Retainer |
BC2010 |
| Spring Seat |
BC2904 |
| Net Cam Lift |
0.550" / 13.97mm |
