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After 22K my suspension is hammered. I was wonderin if anyone knew of any good upgrades for an 04 cbr 600 f4i. I heard that the rear shock from a cbr 954 was compatable and a good upgrade. Is this true??? Also a friend of mine is using a GSXR 750 front end on an sv650 that was turned into a streetfighter. The bike handles so much better his rc51 never leaves the garage anymore. Is there any options like that for an f4? Like using an rr fork and tree to upgrade? Im not big into stunting I just want to stay hooked up at full lean. After seeing a friend of mine go down on Sunday its time I get off my ass and make this thing right. I could rebuild and replace but want to look into upgrading first.