4G63 Valve Spring & Retainer Kits
Designed for high rpm, BC valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances.
Kit #
Spring #
Retainer #
Seat #
Description
Buy Kit
Status
BC0100
BC1100
BC2100
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Single spring, titanium retainer
In-Stock
BC0120
BC1120
BC2120
BC2910
Dual spring, titanium retainer, spring seat and valve seals
In-Stock
Spring Pressure: BC1100 Seat: 1.550" @ 84 lbs / Open: 1.000" @ 235 lbs / Coil Bind: 0.935" (no machine work required)
Spring Pressure: BC1120 Seat: 1.550" @ 92 lbs / Open: 1.100" @ 235 lbs / Coil Bind: 0.970" (no machine work required)
4G63 EVO IX Stainless Steel Valves
BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, heat resistant stainless steel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and features a swirl polished finish under the head.
HYUNDAI G4KF
