BC0900X-2 - Polaris Pro-R Beehive Spring/Titanium Retainer/Seal Kit w/o Seat

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 titanium alloy, also includes BC3991-2 valve stem seals.

Type
BC1900-2 Single

Free Length
1.610"

Seat
1.265" @ 83 lbs

Open
0.850" @ 197 lbs

Coil Bind
0.760"

Retainer
BC2901-2

Valve Seal
BC3991-2

Net Cam Lift
0.430" w/BC3991 Seal