12T And 22T Overdrive Helical Gear Set For TRX4M Front And Rear Axles Beefed Up Steel Alloy CNC Machined Gears 1 To 18 RC Crawler Upgrade Replaces Plastic Stock Gears Smoother Operation Beefier Strength 7G Per Set

TRX4M 2 Gear Overdrive Helical Set CNC Steel Gears
✔️ CNC machined 20CrMo alloy steel; replaces stock plastic gears

This two-gear overdrive helical set upgrades the TRX4M 1/18 scale crawler by replacing the stock plastic gears in either front or rear axles. It adds strength, reduces wear, and improves smoothness for better traction on rocks and trails.

✅ 12T and 22T overdrive gears boost speed by about 9% and improve ground clearance
✅ Helical gears deliver smoother operation and better strength than factory spur gears
✅ CNC machined 20CrMo alloy steel for durability and reduced wear
✅ Fits TRX4M front or rear axles; replaces stock plastic gears
✅ approx 7 g per set; color: black

💡 What is an overdrive helical gear set used for in RC crawlers? Handy upgrade to boost traction and ground clearance on tough trails.
- Improves power transfer to axles for better grip
- Reduces gear noise and wear with helix tooth design
- Compatible with TRX4M front or rear axles for easy upgrade

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