RZR S 900 New Big Gun Exhaust! October 24, 2015 There’s a new Big Gun EVO slip-on exhaust for the 2015 Rzr 900s on Ebay Motors for $283.99 with free shipping, does anyone have any experience with the Big Gun products? They claim it adds 8 HP. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related