EBC Clutch Spring Kit for Honda CBR600F model applications :-. Honda CBR600F :- 1991 - FM, 1992 - FN, 1993 - FP, 1994 - FR, 1995 - FS, 1996 - FT, 1997 - FV, 1998 - FW. EBC clutch springs are heat treated and tempered and are 15% stronger than standard OE clutch springs.