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Copper is going in mine tonight i finally have all the parts to get this thing buttoned up. I am not chasing the OEM donuts either! I want this to be one and done. Not a fan of tearing my sled down every 4k miles to inspect it would be one thing to open a hatch to inspect but its a pain really...

Thanks for all the info guys!! Really appreciate it! :rocks:

Thanks for the response! Glad to hear the copper is working I'll put them in.

Old thread but I did the same; there were two rivets one one each side of the tunnel that lined up with the new brace hole towards the back of the sled. Drilled them out and installed new rivets they made a great guide to make sure both braces were the same location on each side. Rivet the sides...

I just installed a set of boondocker tunnel braces. They really stiffened up the tunnel you can find these on ebay for 129.00 may help with your crack issue.

Question I have will your sled quit with the copper installed using the towel test at the end of your exhaust? If it wont bog and quit with a wet towel then you are losing air from the donuts. My brother installed Ulmers donuts and now cannot get the sled to quit with the test; it will stall...

Yes the y pipe bracket bolts came right out with heat as they were red lock tighted. The exhaust clamp bolts came out pretty easy too. I did hear that oem yamaha donuts have improved and now have a different part number. I am assuming that copper makes your sled louder due to copper not sealing...

Reasons for OEM?

Ok! I will make sure its good and clean. Clamps came off easy but the Y-Pipe bracket bolts wont budge! One on the verge of stripping ******* allen head (thanks Yamaha). Walking the heat to them tonight and if worse comes to worse I'll drill the rivits out and get the entire pipe/bracket on the...

https://www.ebay.com/itm/Yamaha-Snowmobile-Copper-Exhaust-Gasket-Set-FX-Nytro-RS-Vector-99999-03989/111762448855?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160727114228%26meid%3De38a609212af481692ba1fc6facf3f00%26pid%3D100290%26rk%3D1%26rkt%3D4%26sd%3D111762448855&_trksid=p206077...

Hi new member here. I am questioning changing over to the copper myself. I have around 4000 miles on my 13 nytro xtx and decided to inspect the gaskets as I heard the OEM gaskets can be problematic. Well low and behold the OEM looked perfect. I am planning to replace to new anyways since I'm...