Skat-Trak 12 Vane 140,142 and 144mm Magnum Pumps. Standard and Set Back models. Fits all years SXR 800 and 750 Sxi/Sxi Pro Standups. Includes one SKAT TRAK Impeller. In stock in the 12-vane configurations, the Skat-Trak Set-Back Pump moves or "Sets-Back" the stator section and impeller by reducing the length of the vanes. Not only does this open up the intake area before the impeller, allowing for more water to be stored in the inlet section, but it also puts the impeller closer to the venture nozzle creating less drag on the water flowing through the stator section. The stator vane and wear ring housings are not shifted. Only the stator vane section is internally moved back. When you compare the craftsmanship of the Magnum Pumps to their stock OEM counterparts, the difference is visually noticeable. SKAT TRAK Magnum Pumps are manufactured from high-quality 17-4 stainless steel and 6061 T-6 billet aluminum, unlike the stock pumps, which are made from cast weaker aluminum, plastic and brass. Skat-Trak Extended Driveshaft also available.