Roger Federer RF Wilson K-Factor Tennis Racquet

…historic and rare. The Wilson K Factor Six.One Tour 90 (often abbreviated K90) is a legendary, heavy, and control-oriented tennis racquet used by Roger Federer to win 6 Grand Slam singles titles between 2007 and 2009. Known for its 90-square-inch head size, 12-ounce-plus weight, and dense, stable feel, this racquet requires high-level, traditional strokes to maximize its potential in, for example, a 2025 competitive setting. Key Features & Performance Technology: Used "Karophite Black" (bond of Carbon Black, graphite, and \(SiO_{2}\)) for a stronger, denser frame layup.Control/Precision: Exceptionally high, serving as a benchmark for accuracy.Feel & Stability: Offers a "connected," stable, and classic, often harsh,, feel, especially on the 90-inch head size.Spin: Moderate; requires significant effort to generate high spin compared to modern, open-pattern racquets.Ideal User: Advanced, experienced players with fast swings seeking precision and comfort with high-weight frames. Common Models K Factor Six.One Tour 90: The primary 90 sq. in. frame used by Federer, known for immense control and stability.