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Toyota RI engine

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==
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