The Toyota RI is a family of prototype four-stroke 2.0-litre single-turbocharged inline-4 racing engines, developed and produced by Toyota, for the Super GT series and Super Formula under the Nippon Race Engine framework. The RI engine is fully custom-built.
Versions The RI engine comes in two different versions for different applications; the RI4A for use in Super Formula and the RI4AG for use in Super GT. RI4A (2013–present, also known as TRD-01F) RI4AG (2013–2023) RI4BG (2024–present)
Applications Dallara SF14 Dallara SF19 Dallara SF23 Lexus RC F GT500 Lexus LC 500 GT500 Toyota GR Supra GT500
See also Honda HR-414E/HR-417E/HR-420E engine, similar engines also developed under the Nippon Race Engine framework Nissan NR engine, similar engine also developed under the Nippon Race Engine framework
References