Custom Frames for Metric Motorcycles. The Metric Frames collection at TC Bros is built for riders and builders who want to create bold, one-of-a-kind custom motorcycles with a solid foundation. This category features high-quality hardtail frames, frame kits, and essential mounting components designed for models like Yamaha XS650, Honda CB750, and other iconic metric bikes. Perfect for chopper and bobber builds, these frames are engineered for durability, precision fitment, and ease of customization. With TC Bros’ trusted craftsmanship, these frames deliver the reliability and rugged style you need to turn your vision into reality, ensuring your bike stands out with unmatched attitude and performance.
Since 2006 we have been producing custom hardtail chopper frame kits. Our most popular kits are the XS650 hardtail and CB750 hardtail. Another unique product we manufacture is a DIY kit that includes all the material you will need to convert your bike to a hardtail.