300/440/550 have you heard of a 4/17 skat trak for a 550sx

[BBYamaha]

I got a 4/17 yes it clearly stamped 4/17 but with my google searches, and board searches I cant find anything about a 4/17...there is alot about 14/17 but nothin about 4/17's.....any thoughts..

 

[sflsurfrider]

more than likely a 14/17

 

[BBYamaha]

chart says 14/17 is for a modified engine, you think a motor with no porting 185 compression and a factory half pipe can spin this prop and have anybottom end.. thanks for the response