The GPM 40CR Steel Differential Bevel Gear 34T paired with the 11T pinion is specified to enhance drivetrain durability and power delivery in TRAXXAS TRX4 Trail Crawlers. Favoured as an upgrade to factory gearing, this steel set reduces the risk of premature wear under heavy torque and provides consistent mesh for technical crawling. The component set is suitable for hobbyists focused on reliable performance and straightforward drivetrain reinforcement.