Replaced the stock shield with a clearview large-the new shield is actually 27 3/4 which is actually 3 inches taller than the stock. It has a vent. I am 5' 9'' tall in slippers eyeball 5' 5'' in slippers inseam 30'' sitting on the bike eyelevel is 39'' from the top of the plastic over the engine wind shield is at 37''. Took it for a short ride --no more watering eyes or a large amount of wind noise without a helmet after a long ride i will post more i beleive the large shield will work fine and still look over the shield and see the ground about 50' out. Jim