| My ST4 had the standard cans done before i bought it. Sounds awesome but way too loud to ride without ear plugs. I think the original owner paid about £170 to have them done. I also set off the odd car alarm but i can live with that and non of my neighbours have complained in the last year. If i'm working on it in the garage for any length of time i do have to wear ear defenders though!
Paul. | 
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