2009 - 2011 Keystone Big Sky New Fender Skirt (White) 2009 - 2013 Keystone Montana New Fender Skirt (White) 2009 - 2013 Keystone Mountaineer New Fender Skirt (White) Fits Keystone RV Mountaineer coaches for the years of 2009 - 2013. 2009 - 2011 Keystone Big Sky New Fender Skirt (White). 2009 - 2013 Keystone Montana New Fender Skirt (White). Confirm fitment based on measurements. Constructed of durable high-impact plastic. If you have any questions, please feel free to contact us. To ensure proper fit include your VIN. Some Fender Skirts have several options for all of the model years listed. White in color