The Triumph Street Triple is generally not considered a beginner's motorcycle. It is a powerful and sporty naked bike with a high-performance engine and agile handling. The Street Triple models, particularly those with larger engine displacements, offer significant power and performance capabilities that may not be suitable for inexperienced riders.
While it's not impossible for a beginner to ride a Street Triple, it is generally recommended that new riders start with motorcycles that have less power and a more forgiving nature. Bikes with smaller engine displacements, such as 250cc or 300cc, are often recommended for beginners as they offer a more manageable power delivery and are easier to handle while learning essential riding skills.
If you are a beginner rider and considering a Triumph motorcycle, you may want to explore other models in Triumph's lineup that are more suitable for novice riders. Triumph offers various motorcycles, including the Street Twin or the Trident 660, which are designed with beginner-friendly characteristics in mind while still offering an enjoyable riding experience. It's always important to consider your skill level, experience, and comfort when choosing a motorcycle. Additionally, taking a motorcycle safety course and gaining riding experience before stepping up to a more powerful bike is highly recommended.