does anyone have a mmax(or sx-r)750cc big bore kit?? i am in iceland and i need pistons in my sled,but i cant find them.they are 72.90mm and two other numbers a33j8 and 9385 as well as i remember.i about to eat my face off its snowing like hell here and im grounded with broken and melted pistons.please im in big trouble,im the only yamaha man in my town(it´s not good for my pride)with those skidoos and polaris fck....rs are having all the fun.
jt specialties
New member
Wiseco stocks those pistons. Try calling, ohio 800-321-1364, California 800-445-7334, or Canada 888-494-7326. If you don't get any results I'll find my catalog and get you the part #s. Let me know.
Tom
Tom
thank you,i vill try to phone them but i was trying to call out side iceland few days ago and i its was only trouble.i will try again. 
rynokron
New member
if you can't find them you can try hartman inc. he does alot of 750cc motors. his contact info is on hartmaninc.com. i've also seen simons cpr advertise a 750cc kit.