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I could not pull away from my dads stock 13 Apex when I was running a 180 supercharger on my Nytro. Once I pumped the psi up on the supercharger kit I could just just get ahead of his apex.

The bottom on a Nytro is reverse cut for the taper. If you would like to buy one of the wrong ones cheap I have one too....

I live in Winnipeg as well. $100 and we can meet up. With shipping and exchange it was over $200 from MPI.

I have a 27

Well sure enough, after 1 season with the MPI/Rotrex supercharger my shaft broke. My setup was textbook, I mean checking oil flow each ride and all. Down she went, exactly how the other stories describe. MPI & Yamaha should be owning up to the failed endorsement of this product. I was...

I have a 26 bottom and 27 bottom I would like to sell. The 27 is a nice cheap bolt on HP for anyone with a Nytro 180 kit.

There is no fix. 2 2013 Apex’s, 2 Nytros and an 07 Apex all left us stranded on my buddies island yesterday. Guess what, the 1200 doo fires right I’m. I’m done with Yamaha. These things are pieces of garbage. And guess what, the MPI/Rotrex supercharger broke the shaft on the way home. Garbage.

27 Botttom

I am in need of a bottom pulley. Any idea where to get one that will fit? The taper lock is reverse on the bottom from what the top is.

So the pulley I ordered turned out to a pulley for the top. I cannot find one for the bottom. Is there any chance anyone has a 27 for the bottom they would sell?

Any chance you could send me a pic of them installed? I am at a loss for what to do.

Are the top and bottom interchangeable?

MPI told me it will push out what it doesn't need and will be fine. Mine did it after the first few rides and now it is good.

Need a PC3 Hindle full exhaust with air box mod map.

Thank you very much! I was able to order one locally for $107cnd. Steel but will have to do.

Anyome have one they want to sell?

Yamaha updated the bolt for this reason. Took mine to a local machine shop to get it out.

No complaints on my mileage. in 70 miles i am 1 gal (3.7L) more than a stock Nytro and exact same an Apex.

I put my charger on at the start of this season. My system is running a 26t bottom and 28t top pulley. The GEMS I have has only 4 settings and I have each set to "4" as what Yamaha recommended on their installs. When pushing the mode button I found you had to push it almost with your finger...

Adding a Supercharger as well?