Traxxas TRX-4 Machined Overdrive Ring & Pinion Gear (12/33T)

Traxxas TRX-4 Machined Overdrive Ring & Pinion Gear (12/33T)
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Price: $39.95
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The Traxxas TRX-4 Machined Overdrive Ring & Pinion Gear is a heavy duty gear upgrade for your TRX-4 build. This ring and pinion gear set is overdriven compared to the stock gear ratio, meaning it will provide increased wheelspeed. This gear is more durable than the stock parts and is better suited to high power ESC/Motor systems. Package includes one 33T ring gear and one 12T pinion gear.

A popular tuning option is to overdrive the front axle, and underdrive the rear axle. This can be achieved using a variety of gear combinations. You can run standard in the front, and underdrive in the rear, overdrive in the front and standard in the rear - or for the most dramatic impact, run overdrive in the front and underdrive in the rear. See option list below.

Gear Options:

  • Underdrive: TRA8288
  • Standard: TRA8279R
  • Overdrive: TRA8287 

Verified Owner
Thursday, Aug 27 2020 (5 months ago)
Traxxas TRX-4 Machined Overdrive Ring & Pinion Gear (12/33T)
I installed this on the front axle of my trx4 sport. Climbing seems a bit better with no downside. Side Hilling is still very good and is fine on the trail. My Sport is geared down so I'm not going very fast like a TRX4 with a 2 speed trans. I'm adding the rear underdrive gear to gain further advantage on the rocks.