Performance Modifications Rancher 420 IRS Gear Reduction. November 13, 2015 I have a 2014 Rancher 420 AT IRS. I’m looking at doing a SRA Gear reduction, and I know its the secondary gears, but I’m not exactly sure what to buy, or where to buy it from? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related