Setups
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Gearing
Stock gearing for the Xpress EXECUTE FM1S, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 36T | 1.78 | 3.38 |
| 37T | 1.73 | 3.29 |
| 38T | 1.68 | 3.20 |
| 39T | 1.64 | 3.12 |
| 40T | 1.60 | 3.04 |
| 41T | 1.56 | 2.97 |
| 42T | 1.52 | 2.90 |
| 43T | 1.49 | 2.83 |
| 44T | 1.45 | 2.76 |
| 45T | 1.42 | 2.70 |
| 46T | 1.39 | 2.64 |
| 47T | 1.36 | 2.59 |
Shaded rows are the pinions most 1/10 FWD touring/gt setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Xpress EXECUTE FM1S, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Xpress EXECUTE FM1S?
It depends on your motor and the track. In the 1/10 FWD touring/gt class, racers gear by final drive ratio: 17.5T near 4.51. On the EXECUTE FM1S's stock 64T spur that is about 27T for 17.5T. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the EXECUTE FM1S selected.
What is the internal ratio (transmission ratio) of the Xpress EXECUTE FM1S?
The EXECUTE FM1S has an internal ratio of 1.9:1. Final drive ratio = spur ÷ pinion × 1.9. With the stock 64T spur, a 36T pinion gives an FDR of 3.38 and a 47T gives 2.59.
How many teeth is the stock spur gear on the Xpress EXECUTE FM1S?
64 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. Part numbers link to AMain.
- Front
- 450 cst
- Rear
- 450 cst
- Front
- 2-hole
- Rear
- 2-hole
- Front
- 1,000,000 cst
What shock oil does the Xpress EXECUTE FM1S come with?
Out of the box the EXECUTE FM1S runs 450 cst front, 450 cst rear, on 2-hole front, 2-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 Xpress EXECUTE FM1S come with?
The kit springs are 1.4 Blue (#10363) front, 1.4 Blue (#10363) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
What diff fluid does the Xpress EXECUTE FM1S come with?
The kit diff fluid is 1,000,000 cst front. 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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Setup App & Race Log
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