Burris 15° Billet Subplate Mount for International Rail KartsGlobal Standard Fit: Matches 3 5 8" center to center rails on nearly all contemporary karts, from European to Asian builds. Angle Precision: 15 configuration aligns drivetrain for efficient power delivery, minimizing tire scrub in corners. Adjustability Excellence: Slider design facilitates real time tweaks to caster and weight bias, enhancing straight line velocity. The Burris 15 billet subplate mount stands as a testament to enduring karting