Get stronger, more confident stopping power with the X1R HD Wave Front Brake Disc (Eb4F), a large 245mm performance rotor designed for 150cc sport and underbone riders. Crafted from SUS 410 Japanese hardened steel, it resists wear and warping, even under repeated hard braking.

The ultra-cut wave design reduces rotating weight and helps clear water and debris, while the super heat sink construction pulls heat away quickly to reduce brake fade. At 4mm thick, it balances strength and lightness for daily riding, spirited road use and track days.