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So I recently have to pull top end off of my grizzly and was going to go with 686 11.1 big bore kit, hmf exhaust with the dynatec cdi, dyno carb kit, and I was wondering if I am missing anything I need to do to run this setup? If I can use stock valves, cams etc with 93 octane. Any input will help thanks
 

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I have an HMF performance I love it. you might want to buy the enduro tip so you can modify the sound output because it's LOUD wide open. Other than that you're doing exactly what I want to do to mine.
 

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You can run whatever valve and cam you like with that setup. Many and most run stock. You just can't get the maximum potential out of it with a stock valve train setup.

You'll need to rejet the carburetor, but that's about it.
 
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