Setups
No setups found
No public setups have been shared for this car model yet.
Have a setup for the Rocket 5.1?
Share your setup sheet with the community — we'll fill in the details automatically.
Gearing
Stock gearing for the Custom Works Rocket 5.1, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR | Rollout |
|---|---|---|---|
| 18T | 4.50 | 11.74 | 18.3 mm |
| 19T | 4.26 | 11.13 | 19.4 mm |
| 20T | 4.05 | 10.57 | 20.4 mm |
| 21T | 3.86 | 10.07 | 21.4 mm |
| 22T | 3.68 | 9.61 | 22.4 mm |
| 23T | 3.52 | 9.19 | 23.4 mm |
| 24T | 3.38 | 8.81 | 24.5 mm |
| 25T | 3.24 | 8.46 | 25.5 mm |
| 26T | 3.12 | 8.13 | 26.5 mm |
| 27T | 3.00 | 7.83 | 27.5 mm |
| 28T | 2.89 | 7.55 | 28.5 mm |
| 29T | 2.79 | 7.29 | 29.6 mm |
Shaded rows are the pinions most 1/10 2WD late model setups run on the stock spur. Rollout at a 68.6 mm tire.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Custom Works Rocket 5.1, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Custom Works Rocket 5.1?
It depends on your motor and the track. Racers in the 1/10 2WD late model class run a 20–27 tooth pinion in most setups, usually on a 81T spur for a final drive ratio near 8.81. Hotter motors (lower turns, higher KV) take a smaller pinion; tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the Rocket 5.1 selected.
What is the internal ratio (transmission ratio) of the Custom Works Rocket 5.1?
The Rocket 5.1 has an internal ratio of 2.61:1. Final drive ratio = spur ÷ pinion × 2.61. With the stock 81T spur, a 18T pinion gives an FDR of 11.74 and a 29T gives 7.29.
How many teeth is the stock spur gear on the Custom Works Rocket 5.1?
81 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Setup Help
All Oval Race Cars →
Free to start · iOS & Android
Setup App & Race Log
Your Custom Works Rocket 5.1 is in the RC Setup App
Save every setup change you make to your Custom Works Rocket 5.1, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.
- Setup Tracking
- AI Mechanic answers
- Find & Share Setups
- Race Log
- Gear Ratio Calculator
- Free to use
