A little worried because of all the mixed reviews. Got some proper thread grade 8 bolts and red locktite and no issues at all.Even with really aggressive snow tires, this thing gives plenty of power at low end paired with a 6.5 hp Homda, 54 tooth sprocket, and 15 inch rear tires. It will drive thru snow well over the front of the cart without lugging down. People with issues must not be lining up front and rear pulleys or not using correct bolts since the supplied ones are metric and don't work with U.S. motors that have SAE threads. Suprized to see some complain about needing to trim guard...not sure what they expect as each install is custom, so no way around needing to trim guard.