I still hav tha factory prop on ma gtr, it measure round 10.5in. was looking at tha gt website and seen that they offered a 12in with a 10 pitch, im not tha best when it comes to pitches an all that. i do hav installed a single mikuni an mm exhaust if that makes a difference. as far as rpm's go they'll get round 4300? what option do i have? thanks a bunch

With the 12" Big blade you will carry a load better than the 11" prop that used to come on the motors a few years back.