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KA24DE 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 # Seat # Description Buy Kit Status
BC0210 BC1010 BC2210 BC2921 Dual spring, titanium retainer/seat In-Stock
BC0210S BC1010 BC2210S BC2921 Dual spring, steel retainer/seat In-Stock
Spring Pressure: BC1010 Seat: 1.400" @ 73 lbs / Open: 1.000" @ 200 lbs / Coil Bind: 0.940" (no machine work required) Maximum lift on stock valve springs is .380".
KA24DE 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
BC3210 37.10mm Intake (+.5mm head diameter) In-Stock
BC3211 31.80mm Exhaust (+.5mm head diameter) In-Stock
BC3212 36.60mm Intake (std head diameter) In-Stock
BC3213 31.30mm Exhaust (std head diameter) In-Stock
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
BC3924 7mm INTAKE (Nissan KA24DE) In-Stock
BC3925 7mm EXHAUST (Nissan KA24DE) 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     
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