What this part does Precision input gear engineered to improve torque transfer and drivetrain efficiency in TA-, TB- and TRF-models. Smoother, more consistent power delivery reduces drivetrain loss and helps the vehicle accelerate and respond more predictably. Why you need it Increases torsion/torque transfer efficiency so more motor power reaches the wheels instead of being lost in the gearbox. More durable than standard plastic or low-grade metal gears, reducing the chance of wear or failure during high-load runs. Precision fit lowers vibration and gear lash, cutting noise and long-term component wear. Key features Compatibility: specifically designed to match TA-, TB- and TRF-model drivetrain specifications for a reliable fit. Material: high-strength metal steel construction for excellent wear and shock resistance. Performance: high hardness and toughness maintain stable operation under prolonged high-load conditions and extend gear life. Machining: advanced precision machining ensures tight tolerances for smooth gear mesh, improved efficiency, lower noise and reduced wear. Installation: straightforward to install and service for both professional technicians and hobbyist RC modelers. Typical use scenarios Competitive RC racing: replace stock gears to gain a more efficient power transfer and more consistent lap times under race conditions. Endurance or high-power runs: use when running higher motor loads or longer sessions to reduce gear wear and avoid mid-run failures. Repairs and upgrades: ideal for routine maintenance or when upgrading drivetrain components during a DIY build or shop service. What to expect after installation Noticeably smoother drivetrain operation, reduced gearbox noise and improved responsiveness. Increased component longevity under heavy use, lowering the frequency of gear replacements. Compatibility note: Designed for TA-, TB- and TRF-models. Material and function are described as supplied; follow your model’s service manual for correct installation and torque settings.