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BC0900S-2 - Polaris Pro-R Beehive Spring/Steel 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. BC retainers are machined from premium chromoly steel alloy for "set it and forget it" wear characteristics. Beehive spring keeps retainer lightweight. Also requires BC3991 valve stem seals.
Type BC1900 Single
Free Length 1.610"
Seat 1.265" @ 83 lbs
Open 0.850" @ 197 lbs
Coil Bind 0.760"
Retainer BC2901S
Spring Seat BC2911
Net Cam Lift 0.450" / 11.43mm


$ 574.00