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time to snowcheck your 2013 yamaha snowmobile here we go it make me want to cry all the money I put into this thing but it was worth it compared to the stock version. first I started by getting a mpi supercharger with the small pully It don't have a boost gauge but I expect it to be putting out 5 to 7 lbs of boost at 10000 ft making a easy 200hp then I started taking weight off. tunnel dump exhaust custom runnig boards new bumpers new evol shocks sno pro mtx skis, pretty much a skinz concepts clone with 250 hrs on it. I was very happy with this sled last year it preformed excelent in deep snow. you can email me with questions at shane_solar1@yahoo.com or call my cell 402 340 0209 I prepaired to take a loss at 12500