11 apex 128

I have an 2011 SE.

I am running 1.325's Woody's Megabytes. No Issues so far. 1200 km on it.

Track must be run to spec. Loose you will have an issue.

Yamaha has a service bulletin out recommending 20 mm spacers on the tunnel protector supports.

There is a thread here on things you can do to protect yourself .
 
I have 1.450 grandmaster no issues the only problem they have is they need the factory tunnel protection braced properly, I put a piece of 1" aluminum square stock in right by the factory bracket and riveted it there and it takes care of the problem.
 


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