these blocks make riding standing up much more comfortable. You can use the lock nuts off the bolts on the handlebars already. Just check all the cables and start the snowmobile on a stand for the first time just in case throttle cable is to tight.
The riser helped the handling by giving more leverage in turns. Makes standing up much more comfortable. The only reason this didn't get five stars is that it doesn't come with nuts and the factory ones are the wrong size.