Toy replacement gears designed to swap fragile plastic parts for CNC-machined alloy steel, improving smoothness and durability. Owners gain quieter, more reliable performance during trail runs and routine maintenance. Is the INJORA Helical Gear Set the straightforward upgrade TRX4M users need?
⚡ At a Glance
- • Drive Smoothness: Reduced vibration, consistent tooth engagement and smoother operation under load
- • Best for: RC hobbyists running 1/18 TRX4M who want a durable metal replacement
- • Not ideal for: Users seeking a change in gear ratios or increased top speed
CNC-machined 20CrMo alloy steel helical gears designed for 1/18 TRX4M front or rear axles. Helical tooth profile lowers noise and wear while keeping vehicle speed unchanged.
Quieter Running – Thanks to helical gear geometry
Helical teeth engage progressively along the tooth face, spreading load across more surface area and smoothing the meshing action. Gradual engagement reduces impact between teeth compared with spur gears.
Noticeably lower audible noise during use and less drivetrain chatter, making trails and practice sessions more pleasant.
Greater Strength and Longevity – With CNC‑machined 20CrMo alloy steel
Precision CNC machining produces accurate tooth profiles and tight tolerances in 20CrMo alloy steel, giving consistent contact patterns and reliable performance. Alloy steel construction resists wear much better than stock plastic parts.
Fewer replacements and reduced risk of stripped teeth under load, extending maintenance intervals and improving reliability on demanding runs.
Straightforward Fitment – With 24T/12T configuration for TRX4M axles
Designed to match TRX4M front or rear axle fitment and the 24T/12T tooth counts indicated in the product name, allowing direct swap-in without altering drivetrain geometry. The specification preserves original gear ratio.
Quick maintenance or upgrade option that keeps handling and top speed unchanged while improving durability and quietness.
✨ The 4 Key Reasons for INJORA Helical Gear Set
- CNC machining – Ensures accurate tooth geometry for reliable meshing under load
- 20CrMo alloy steel – Delivers much greater durability than stock plastic gears
- Helical tooth profile – Gradual engagement cuts vibration and reduces audible noise
- Maintains original ratio – Keeps vehicle speed unchanged while improving drivetrain robustness
📋 Technical Details at a Glance
- Category: Toy
- Fitment: TRX4M front or rear axles
- Scale: 1/18
- Gear Type: Helical gear set
- Tooth Count: 24T / 12T
❓ Frequently Asked Questions
Q: Will these gears fit my TRX4M axles?
A: They are designed to fit TRX4M front or rear axles for 1/18 scale models, allowing direct replacement of the stock gears.
Q: Will the gear set change my car's speed or gearing?
A: The gear set does not change the speed of the car, so original gearing behaviour remains unchanged.
Q: Are these stronger than the stock plastic gears?
A: Helical gears offer greater strength and smoother operation than factory spur gears, and CNC‑machined 20CrMo alloy steel construction reduces wear compared with plastic originals.
🏆 Our Verdict
Ideal for RC enthusiasts running 1/18 TRX4M who want a durable, quieter drivetrain upgrade. CNC‑machined 20CrMo alloy steel helical gears reduce noise and wear while preserving the original gear ratio. While cost should be considered against spare plastic parts, robust construction points to better long-term value and fewer replacements.
