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Old 04-08-2014, 09:25 PM   #3
BOETJE
Gnarly Adventurer
 
Joined: Jan 2005
Location: Auckland New Zealand
Oddometer: 155
That weight difference would be worthwhile I think ! .

According to some info I dug up, the weight of a piston for a R100 airhead is
570 gr (http://www.zeebulon.de/Mot/bmw_allg.htm#Kolbenbolzen) , and the one for an 1150 GS is 585 gr....(http://www.advrider.com/forums/showthread.php?t=836329)
Mind you I did not measure myself.
But that would be not too big a difference in stress if you are not constantly bouncing of the rev-limiter.....
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