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4mm stroker for grizzly 660

billo6663

Newbie
Joined
Apr 5, 2009
Messages
4
hi
im planning on putting a 4mm stroker crankshaft in my grizzly but it says bolt in ang ready to go with a stock piston but i have a wiseco high comp. oversized that makes the 686
does anyone in here have tried this crank or heard of someone that did it and works with the wiseco and does it give a good power gain
 



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