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K20A3 / K24 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. Use steel retainer for high mileage applications.
Kit # Spring # Retainer # Seat # Description Buy Kit Status
BC0050 BC1050 BC2050 No Seat Single spring, titanium retainer In-Stock
BC0040 BC1040 BC2010 BC2904 Dual spring, titanium retainer, steel seat In-Stock
BC0040S BC1040 BC2011 BC2904 Dual spring, steel retainer, steel seat In-Stock
Spring Pressure: BC1050 Seat: 1.567" @ 78 lbs / Open: 1.100" @ 206 lbs / Coil Bind: 0.972" (no machine work required) BC1040 Seat: 1.580" @ 84 lbs / Open: 1.100" @ 250 lbs / Coil Bind: 1.030" (no machine work required)
WARNING: If running a late model cylinder head (after 2004), you may need to purchase BC2940 keepers to accommodate the BC2010 or BC2011 retainers. Honda changed the keeper groove angles, therefore your stock keepers/locks may not fit the BC retainers properly causing potential damage.
K20A3 / K24 Valve Keepers / Locks
7° billet performance valve stem keepers or locks are designed to fit BC retainers (BC2010 and BC2011). 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).
Part # Description # Buy Kit Status
BC2940 7° Billet Keepers / Locks for 5.5mm Honda / Acura applications In-Stock
K20A3 / K24 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
BC3040 35.0mm Intake (standard head diameter) In-Stock
BC3041 30.0mm Exhaust (standard head diameter) In-Stock
BC3042 35.5mm Intake (+.5mm head diameter) In-Stock
BC3043 30.5mm Exhaust (+.5mm head diameter) In-Stock
BC3044 36.0mm Intake (+1mm head diameter) In-Stock
BC3045 31.0mm Exhaust (+1mm head diameter) In-Stock
K20A3 / K24A 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
BC3904 5.5mm INTAKE (Honda K20A/Z, K24A VTEC) In-Stock
BC3905 5.5mm EXHAUST (Honda K20A/Z, K24A VTEC) 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