TPR Industry Polaris XP1000 / XP Turbo Spring Retainer Kit
BC Beehive Valve Spring/Tool Steel 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. BC retainers are machined from premium H13 Tool Steel alloy for added valve control above 10,000 rpm and unlimited wear resistance.
- Type - BC1900 Single
- Free Length - 1.610"
- Seat - 1.265" @ 83lbs
- Open - 0.850" @ 197lbs
- Coil Bind - 0.760"
- Retainer - BC2901H
- Spring Seat - BC2911
- Net Cam Lift - 0.450" / 11.43mm