Limon F1 is a standard part of the "Limon" font family, which was widely used for Khmer typography before the adoption of Unicode.
Alternatively, if you meant the (Formula 1 Display), I can give a detailed review of that — just let me know.
Limon F1 | Khmer fonts — ពុម្ពអក្សរខ្មែរ
— You might mean "Limon F1" as a fictional or niche release.