Honda HR-414E/HR-417E/HR-420E engine
# Honda HR-414E/HR-417E/HR-420E engine

The Honda HR-414E, HR-417E and Honda HR-420E are a series of prototype, four-stroke 2.0-litre single-turbocharged inline-4 racing engines, developed and produced by Honda for the Super GT series and Super Formula under the Nippon Race Engine framework. The HR-420E engine is fully custom-built.

## Versions

* HR-414E (2014–2016)
* HR-417E (2017–present)
* HR-420E (2020–present)

## Applications

* Dallara SF14
* Dallara SF19
* Dallara SF23
* Honda NSX Concept-GT
* Honda NSX-GT
* Honda NSX-GT "Type S"
* Honda Civic Type R-GT
