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