Gas Tanks & Fuel Accessories for Metric Motorcycles. The Metric Gas Tanks & Fuel Accessories collection at TC Bros is crafted for riders and builders looking to enhance the performance and style of their metric motorcycles. This category includes custom gas tanks, fuel caps, petcocks, and mounting kits, all designed with precision and durability to fit popular models like Yamaha XS650, Honda CB750, and other metric classics. Whether you're upgrading for improved functionality or creating a custom chopper or bobber, these products offer the perfect blend of rugged reliability and sleek aesthetics. With TC Bros’ commitment to quality, you can trust these fuel accessories to deliver both the attitude and performance your build deserves.