Brian Crower BC0100S Mitsubishi 4G63 Eclipse/Evo Single Valve Spring / Steel Retainer Kit

Brian Crower BC0100S Mitsubishi 4G63 Eclipse/Evo Single Valve Spring / Steel Retainer Kit Brian Crower BC0100S is an application-specific valve spring and retainer package for Mitsubishi 4G63 Eclipse/Evo. 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 / ApplicationMitsubishi 4G63 Eclipse/Evo Product Details Manufacturer: Brian Crower Manufacturer Part Number: BC0100S Product Type: Valve Spring & Retainer Kit Fitment / Application: Mitsubishi 4G63 Eclipse/Evo Spring Type: Single Spring Part Number: BC1100 Retainer: BC2100S Retainer Material: Steel Kit Includes: Valve springs, Retainers Brian Crower Spring Specifications Free Length: 1.879" Seat Pressure: 1.550" @ 84 lbs Open Pressure: 1.000" @ 235 lbs Coil Bind: 0.935" Net Cam Lift: 0.520" / 13.2 mm Spring Seat: Uses OEM spring seat 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.