The best replacement for gear box is rack and pinion.

The best alternatives to gear box are rated as following:
★★★★★  rack and pinion

Your alternative for gear box is not listed? Suggest!
Speaking about gear box, one probably shouldn't forget about motor.

Other search terms related to gear box and their ratings are:
★★★★★ motor
You have in mind a companion for gear box and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of gear box in all years. Click on graph for more.
gear box
rack and pinion