Brian Crower BC0040SX Honda/Acura K20A, F20C/F22C - High Miles Dual Valve Spring / Steel Retainer Kit - No Seat

Brian Crower BC0040SX Honda/Acura K20A, F20C/F22C - High Miles Dual Valve Spring / Steel Retainer Kit - No Seat Brian Crower BC0040SX is an application-specific valve spring and retainer package for Honda/Acura K20A, F20C/F22C - High Miles. The matched components are intended to provide controlled spring pressure and stable valvetrain operation in performance applications when installed to the correct height and clearance. Fitment / ApplicationHonda/Acura K20A, F20C/F22C - High Miles Product Details Manufacturer: Brian Crower Manufacturer Part Number: BC0040SX Product Type: Valve Spring & Retainer Kit Fitment / Application: Honda/Acura K20A, F20C/F22C - High Miles Spring Type: Dual Spring Part Number: BC1040 Retainer: BC2010 (as listed in BC current spec table) Retainer Material: Steel Kit Includes: Valve springs, Retainers Brian Crower Spring Specifications Free Length: 2.025" Seat Pressure: 1.590" @ 80 lbs Open Pressure: 1.110" @ 250 lbs Coil Bind: 1.030" Net Cam Lift: 0.550" / 13.97 mm Spring Seat: Uses OEM spring seat Installation / Application NotesBrian Crower notes that late-model Honda cylinder heads (after 2004) may require BC2940 keepers to correctly accommodate BC2010/BC2011-style retainers because Honda changed the keeper-groove angle. Confirm keeper-to-retainer compatibility before assembly. BC identifies BC0040SX as the steel-retainer/no-seat kit; its current storefront specification table lists retainer BC2010. Fitment NoteWe identify many performance components by engine family rather than by every individual chassis. Verify the engine code, cylinder head/valvetrain configuration, and required supporting components before ordering, especially on engine swaps or modified vehicles. Always verify installed height, coil-bind clearance, retainer-to-seal/guide clearance, and camshaft lift before final engine assembly.