2or4strokes Posted March 19, 2011 Share Posted March 19, 2011 Hi Have any of you install the feracchi high compression of 92mm bore which he claims is a slot in pistons. Is it any good ? How much more power can you gain and most importantly is it relaible. Link to comment Share on other sites More sharing options...
Guzzirider Posted March 19, 2011 Share Posted March 19, 2011 Its all about the mid range- ignore the Ferracci hype about extra peak power, but you will get a big shove of grunt just where you want it. I know a few members of this forum have fitted them with no issues at all. I have sold my V11 but it never had any problems with the new pistons in the 15000 miles or so since they were fitted. Take a look at this thread: FBF pistons Link to comment Share on other sites More sharing options...
helicopterjim R.I.P. Posted March 20, 2011 Share Posted March 20, 2011 Its all about the mid range- ignore the Ferracci hype about extra peak power, but you will get a big shove of grunt just where you want it. Absolutely!! You will find the throttle response and roll on acceleration are so much better - and the exhaust note is a little sharper too! Great improvement!! Link to comment Share on other sites More sharing options...
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