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The boss seat gives the same concept as a motocross seat. It starts out wide and gets narrow towards the top. I gained a 1.5 inch rise with the seat (notice its equal height to the gas cap) which makes it more comefortable for my riding style standing up. this seat breaths alot better than stock and does not bind in super cold conditions. the bars are stock with rox 2 inch riser. If you have an expert then the rox treads are a must have. They are wider and execellent traction for feet. when the sled transfers feet don't slide off.
P.S. if you run a expert on an srx you must long travel the front some how. I used the longer mount brackets i bought from ebay.