Harley-Davidson Road King Tuning
1 supported Harley-Davidson Road King application, 2021-2022.
Harley-Davidson
1 supported Road King tunes
Harley-Davidson Road King
(FLHR)
2021-2022
- Controller
- Engine (ECU)
- Remote tuning
- Remote tuning available
HP TunersBook a tune
All Supported Harley-Davidson Road King Tunes
| Engine | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| (FLHR) | 2021-2022 | ECU | HP Tuners |
Other Harley-Davidson Models
About Harley-Davidson Road King tuning
Rapid Racing supports 1 Harley-Davidson Road King application from 2021-2022 through HP Tuners. Every calibration is built for your exact engine, fuel, and modifications, then verified on our Dynojet 424xLC2 in Jenison, MI, serving Grand Rapids and West Michigan. Remote tuning is available for supported Harley-Davidson Road King applications.
Supported engines: (FLHR).
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.