This gear reduction consists of Polaris part #’s 3235450 and 3235451, also known as the Polaris Ace 325 Gear Reduction.  This is a stage 2 gear reduction consisting of the 25 tooth reverse gear shaft and the 48 tooth stage 2 gear.  This is a total reduction of approximately 27% across high, low, and reverse.  We highly suggest you contact us before ordering gears unless you are absolutely sure what part numbers you are needing.  This is because of the variations in gear reductions from the factory and compatibility.  There is no warranty on Polaris gears and no returns.  This product is not eligible for any discounts.