Setups
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Gearing
Stock gearing for the Traxxas Slash 4X4, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 13T | 4.15 | 16.28 |
| 14T | 3.86 | 15.12 |
| 15T | 3.60 | 14.11 |
| 16T | 3.38 | 13.23 |
| 17T | 3.18 | 12.45 |
| 18T | 3.00 | 11.76 |
| 19T | 2.84 | 11.14 |
| 20T | 2.70 | 10.58 |
Shaded rows are the pinions most 1/10 4WD short course truck setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Traxxas Slash 4X4, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Traxxas Slash 4X4?
It depends on your motor and the track. In the 1/10 4WD short course truck class, racers gear by final drive ratio: 4000 kV and up near 11.00. On the Slash 4X4's stock 54T spur that is about 19T for 4000 kV and up. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the Slash 4X4 selected.
What is the internal ratio (transmission ratio) of the Traxxas Slash 4X4?
The Slash 4X4 has an internal ratio of 3.92:1. Final drive ratio = spur ÷ pinion × 3.92. With the stock 54T spur, a 13T pinion gives an FDR of 16.28 and a 20T gives 10.58.
How many teeth is the stock spur gear on the Traxxas Slash 4X4?
54 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit setup
Kit shock setup (Platinum). Part numbers link to AMain.
- Front
- 30 wt
- Rear
- 30 wt
- Front
- 1.5mm hole
- Rear
- 1.6mm hole
- Front
- 30,000 cst
- Center
- 100,000 cst
What shock oil does the Traxxas Slash 4X4 come with?
Out of the box the Slash 4X4 runs 30 wt front, 30 wt rear (Traxxas oil), on 1.5mm hole front, 1.6mm hole rear pistons. That is the kit setup; you will need to adjust it for your track conditions. The RC Setup App can help dial it in.
What springs does the Traxxas Slash 4X4 come with?
The kit springs are GTR long 0.767 black (#7444) front, GTR xx-long 0.874 black (#7446) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
What diff fluid does the Traxxas Slash 4X4 come with?
The kit diff fluid is 30,000 cst front, 100,000 cst center. Thicker front adds steering on power; thicker center sends more drive rearward; thicker rear stabilizes the car under throttle.
Setup Help
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