Welcome to the comprehensive workshop service and repair manual for the Triumph Bonneville T100 America, specifically the Speedmaster variant, covering models from 2002 onwards. This British-engineered motorcycle is a modern interpretation of the iconic Bonneville lineage, blending classic styling with reliable contemporary performance. Known for its distinctive parallel-twin, air-cooled engine and comfortable cruiser ergonomics, the Speedmaster is designed for riders who appreciate heritage and a smooth riding experience, whether for leisurely cruising or longer journeys. The commitment to quality is evident in the robust construction and enduring appeal of this model. This manual provides full workshop service and repair coverage, encompassing thousands of pages of detailed information, diagrams, and procedures. It is designed to be an indispensable resource for professional technicians, dealership workshops, and experienced DIY enthusiasts. Within these pages, you will find in-depth guidance on engine assembly, disassembly, tuning, and diagnostics, as well as comprehensive instructions for the transmission, chassis, braking, and electrical systems. From routine maintenance tasks like oil changes and filter replacements to complex engine rebuilds and electrical fault finding, this manual offers step-by-step instructions and crucial technical specifications to ensure your Triumph Bonneville T100 America Speedmaster remains in optimal condition.