fkrisztian Posted September 9, 2007 Report Share Posted September 9, 2007 Hi! All the bikes has an amount of engine sound. (I'm not talking about the sound of the muffler and I'm also not talking about piston knock or something like this. I'm talking about the normal sound of the engine itself.) Brand new bikes are pretty silent in the engine area. But with time somehow this sound can increase. Is it possible the reduce the engine sound? For example a new piston makes the engine more silent? Or new bearings, or what? Quote Link to comment Share on other sites More sharing options...
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