tommorow i am buying an 2005 yz125 adn i am getting fmf fatty pipe and titanium 2 silenecer . i also am going to buy the vforce 3 reed but my question is do i have to do any other upgrades to the motor to run the stage3 or will the bike run fine if i just put them in and grab some throttle!!
thanks for all your help adn one more question is there any really big differene in the factory fattty or fatty gold series? thanks again
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