ACT 884006P Monoloc One Piece Collar for Pull Type Clutches for 2003-15 Mitsubishi EVO / 2002-15 Subaru WRX STI 884006P is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches. The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance. It provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications. Monoloc's hardened chrome-moly steel construction will provide years of service. Fits: 1993-95 Mazda RX-7, 2003-15 Mitsubishi Lancer Evolution, 2004-06 Subaru Baja Turbo, 2002-15 Subaru WRX/STI