10-Spline Sportsman Series GearsSCS now makes a Quality Gear, priced for the Sportsman Racers. The Sportsman Series gears are CNC Crown Hobbed to produce a quality that meets the exacting standards accepted by SCS. The gears are not lightened and are made of 8620 material. They are Heat Treated as are the Professional Series, but will have a REM finish rather than the Black Oxide. Please note that the Sportsman Gears are engineered the same as the Professional Series and have the exact same Gear Ratios Available. (The Gear Ratio Card works for both the Professional and Sportsman Series)