Polaris RZR/Ace 325 Gear Reduction Set (reduces high, low, reverse)Provides approximately 13% reduction in the Pro XP and other RZRs across high, low, and reverse. This gear reduction consists of Polaris part #s 3235450 and 3235451 OEM reverse shaft, 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 and work in Pro XP and Turbo transmissions also. We highly suggest you contact us before ordering gears unless