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4G63 Valve Spring & Retainer Kits
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 titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances. |
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Kit # |
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Spring # |
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Retainer # |
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Seat # |
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Description |
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Buy Kit |
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Status |
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| BC0100 |
BC1100 |
BC2100 |
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Single spring, titanium retainer |
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Out of Stock |
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| BC0120 |
BC1120 |
BC2120 |
BC2910 |
Dual spring, titanium retainer, spring seat and valve seals |
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In-Stock |
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| BC0100S |
BC1100 |
BC2100S |
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Single spring, Steel retainer |
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Out of Stock |
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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) |
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4G63 Valve Keepers / Locks
6mm stem diameter, 6° billet performance valve stem keepers or locks are designed to fit BC and OEM retainers. Precision machined from premium billet bar stock chromoly steel and heat treated for maximum strength to insure against shoulder shearing (common with stock and lesser quality brands). |
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Part # |
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Description # |
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Buy Kit |
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Status |
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| BC2944 |
6° Billet Keepers / Locks for Mitsubishi 4G63/Evo applications |
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In-Stock |
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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. |
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Part # |
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Description |
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Buy Now |
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Status |
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| BC3100 |
34.0mm Intake (standard head diameter) |
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In-Stock |
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| BC3101 |
30.5mm Exhaust (standard head diameter) |
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In-Stock |
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| BC3104 |
35.0mm Intake (+1mm head diameter) |
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In-Stock |
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| BC3105 |
31.5mm Exhaust (+1mm head diameter) |
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In-Stock |
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619.749.9018 ph
619.749.9128 fx
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| Some products listed are not legal for sale or use on emission controlled motor vehicles, RPM ranges vary on application.Warranty Information Copyright © Brian Crower Inc. All rights reserved.. |
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WARNING: This product can expose you to chemicals,
including Chromium (hexavalent compounds), lead and lead
compounds, which are known to the State of California to
cause cancer, birth defects or other reproductive harm. For
more information, visit www.p65warnings.ca.gov |
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