XRAY precision-molded spur gear. Molded from the all-new special lightweight and extra-strong graphite material which gives the gears an optimum balance of hardness, toughness, and flexibility to provide long life, minimal wear, and minimizing breakage or teeth stripping. The graphite gears are also lighter which results in increased drivetrain efficiency.   The spur gear was strategically lightened to reduce rotating mass. The special material will withstand even the most extreme racing conditions which impart high tension on the spur gears. A “must have” for professional racers. The spur gears are injected in a specially-constructed mold that ensures equal material injection to ensure ultra-true and wobble-free running which makes the NT1 spur gears some of the world's most precise. Each gear is stamped with the tooth number for easy identification. Available in all popular sizes, allowing you to find the perfect gear ratio for any track.