Yes, it is generally true that older Royal Enfield Bullet motorcycles are heavier than the present-day Bullet models. Over the years, Royal Enfield has made efforts to modernize their motorcycles by incorporating lighter materials and employing updated manufacturing techniques.
Earlier generations of Royal Enfield Bullets, particularly those produced in the mid-20th century and earlier, had heavier frames and components. These motorcycles were typically built with a more robust and solid construction, which added to their weight.
In recent years, Royal Enfield has introduced new models and made design changes to reduce the weight of their motorcycles while maintaining structural integrity and performance. These changes include the use of lighter alloys, improved engineering, and revised manufacturing processes.
While specific weight variations can vary depending on the model and year of production, the overall trend has been towards lighter Bullet motorcycles in the present day compared to their older counterparts.