Underdrive Machined Steel Ring Gear And Differential Pinion Gear Set For TRX 4 Crawler Beefed Up Torque And Smoother Power Transfer Upgrade Kit For RC Hobbyists

Underdrive Gear Set for TRX-4 Crawler - 2-Piece Upgrade
✔️ Machined steel ring gear and pinion pair for improved power transfer

This underdrive gear set is a precision-machined steel upgrade for RC crawlers, designed to improve torque distribution and steering response on tough rock courses and scale trails. It’s built to work with differential gear setups on the TRX-4 platform and ships as a two-piece pack containing one ring gear and one pinion gear.

✅ Material: machined steel
✅ Type: underdrive gear set (ring gear + pinion)
✅ Compatibility: TRX-4 crawler
✅ Includes: 1 ring gear, 1 pinion gear

💡 What is an underdrive gear set used for in RC crawlers?

It balances torque and speed to improve control on rough terrain. - Handy for rock crawling traction - Reduces wheel spin and increases grip - Helpful for scale builds requiring precise throttle control