how to stroke a yamaha

I was wondering what cranks can be used I have tt25s I have dap t50s was just wondering if they work and what else will work thanks.
 
You can definently use the TT25 crank. Buller makes a stroker crank for Yamaha's or you can send a stock crank to Falicon to have it stroked to whatever you want. Be careful how much you stroke it as you will be altering the port timing and if to much you might have to re-sleeve with a custom one.
 
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