shin0208 wrote:如果是哈雷,想改小聲...無解...我的是原廠無改管,聲音還是大到很嚇人,連怠速都很大聲的在那裡哈雷哈雷哈雷的響...
CBR600RR2007 wrote:會大聲還是因為轉速高...(恕刪)
Mai0927 wrote:小弟有聽過改管的美式...(恕刪)