Beefy Hardened Steel Helical Gear Set 12T/24T for TRX4M Front And Rear Axles, One Piece Upgrade for 1/18 TRX4M Bronco Defender K10, Abrasion Proof Replacement Gears With Input Shaft And Output Drive Gear, Easy Install

Hardened steel helical gear set for TRX4M 12T/24T single set
✔️ Hardened 20CrMo alloy helical gears with input shaft and output drive

RampCrab's hardened steel helical gear set is a direct upgrade for the TRX4M 1/18 scale crawler, replacing stock plastic gears in both front and rear axles for improved durability and smoother operation on Bronco, Defender, and K10 kits.

✅ Material: Hardened 20CrMo alloy steel
✅ Gear teeth: 12T and 24T helical set for front & rear axles
✅ Includes input shaft, output drive gear, grease, and O-ring
✅ Easy install, replaces stock plastic gears for long life

💡 What is the best input shaft and output drive gear upgrade for 1/18 TRX4M crawlers?

A handy upgrade that boosts durability and keeps gear mesh solid.

• Compatible with TRX4M front and rear axles
• Hardened 20CrMo alloy steel for abrasion resistance
• Replaces plastic OEM gears with a one-piece design
• Includes grease and O-ring for easy installation

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