INJORA 24T/12T 6g Alloy Steel Helical Gear Set for 1/18 TRX4M Front & Rear Axles (2pcs)

Upgrade your 1/18 TRX4M with INJORA's 24T/12T 6g alloy steel helical gear set. This 2-piece pack replaces the stock plastic gears in either the front or rear axles, delivering a more resilient drivetrain while preserving the original drive ratio. You get a clean, precise module that works with the existing gear mesh, so the feel and response remain familiar even as the components gain strength. The upgraded gears are designed to withstand the demands of off-road crawling, rocks, and rough terrain, offering a reliable platform for extended sessions and adventurous runs.

Why choose alloy steel helicals?

Helical gears engage progressively along their teeth, spreading load more evenly and reducing peak stresses. When paired with CNC machined 20CrMo alloy steel, these gears maintain tight tooth form and steady accuracy under load, which can translate to more confident crawling and longer gear life. Although they are designed to be robust, they are intended to work with your current setup, not to overwhelm it, so the overall drive feel remains familiar to seasoned drivers.

Key advantages

• Replace stock plastic gears with CNC machined alloy steel for improved strength and longevity
• Helical gear design provides smoother engagement and better load handling than standard spur gears
• Less vibration, less noise, and less wear during extended crawls in challenging terrain
• Made from CNC machined 20CrMo alloy steel for consistent performance
• Designed to preserve the original drive ratio, so the car speed remains familiar
• Fits 1/18 TRX4M front or rear axles and ships as a two-piece set

Real-world use and feel

In rocky trails or sandy inclines, you may notice a steadier drivetrain with more predictable torque delivery. The enhanced strength helps maintain mesh alignment during tight turns and uneven surfaces, while the quieter operation can make long crawls more enjoyable. Benefits are described as possibilities based on design intent and user experience, not as guarantees, so you can evaluate how these gears align with your preferred driving style.

Fitment and what you get

This set is engineered for the TRX4M 1/18 scale crawler family and is suitable for front or rear axles. The pack includes two gear pieces ready for upgrade, enabling a straightforward swap for hobbyists who are comfortable with basic RC maintenance and axle upgrades.