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4B11 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.
Kit # Spring # Retainer # Description Buy Kit Status
BC0130 BC1130 BC2130 Single spring, titanium retainer In-Stock
Spring Pressure: BC1130 Seat: 1.375" @ 75 lbs / Open: 0.950" @ 175 lbs / Coil Bind: 0.850"
4B11 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.
Part # Description Buy Now Status
BC3130 35.0mm Intake (standard head diameter) In-Stock
BC3131 29.0mm Exhaust (standard head diameter) In-Stock
BC3134 36.0mm Intake (+1mm head diameter) In-Stock
BC3135 30.0mm Exhaust (+1mm head diameter) In-Stock
4B11 VALVE GUIDES
BC premium valves guides are made from Manganese Silicon Aluminum Bronze alloy and CNC machined to exacting tolerances. BC guides are resistant to cracking and corrosion, while reducing friction and insures high lubrication even at elevated engine temperatures and rpm's. The perfect replacement to worn or damaged guides and 100% compatible with BC's lineup of stainless steel valves.
Part # Description Buy Now Status
BC3914 5.5mm INTAKE (Mitsubishi 4B11T - Evo X, Hyundai G4KF - Genesis) In-Stock
BC3915 5.5mm EXHAUST (Mitsubishi 4B11T - Evo X, Hyundai G4KF - Genesis) In-Stock
619.749.9018 ph
619.749.9128 fx
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.   Follow runBC on Twitter