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The KAWADA Super EX Spur Gear 64P 98T (ST6498) is a high-precision component designed for various touring cars. This spur gear is engineered to offer exceptional dimensional accuracy, which is crucial for optimal performance in RC vehicles.A key feature of this gear is its superior dimensional accuracy, particularly concerning tooth thickness. If the tooth thickness deviates positively from the standard value, it can lead to noise when meshing with the pinion and significantly reduce drive efficiency. The KAWADA Super EX Spur Gear is designed with a negative tooth thickness for enhanced efficiency, contributing to excellent gear quietness and improved drive efficiency.The gear also boasts high roundness, achieved through film gate molding. This manufacturing process ensures uniform resin filling, eliminating unevenness, deformation, and distortion, which results in a highly concentric gear.Installation versatility is another highlight of this spur gear. It can be mounted on various touring cars and is compatible with pin fastening, screw fastening, and differential ball setups. The mounting hole features a slight protrusion, allowing for a play-free installation on cars utilizing a 3mm pin fastening system. Specifically, out of 12 internal holes, four are optimized for 3mm pins, ensuring a secure fit, even for models like the Tamiya TRF417.Furthermore, this spur gear can function as a differential gear for DD cars. It is designed to accommodate twelve 1/8-inch size differential balls within its holes. The slight protrusion in the mounting hole also serves to prevent these differential balls from dislodging.The material used for this spur gear is a specially developed, low-friction Delrin-based material, aiming for maximum strength. This material provides approximately twice the strength of conventional Delrin spur gears, balancing both durability and smooth operation.