Discover the ultimate in durability, speed, and versatility with our premium collection of SunRingle Duroc 40 Rimsdesigned for serious cyclists seeking high-performance wheelsets for mountain biking and gravel riding. Crafted from lightweight, welded 6061 aluminum alloy, these double-wall, tubeless-ready rims provide exceptional strength, reliability, and ease of setup, making them ideal for aggressive trail riding, endurance events, and everyday adventures. Engineered with innovative STR Tubeless Technology, our Duroc 40 rims deliver a seamless tubeless experience, reducing weight and enhancing traction across varied terrain. Available in diverse configurations28H and 32H with disc brake compatibilitythese rims are perfect for riders wanting a wider internal width (36mm) for Plus tires or a larger footprint to improve grip and control. Featuring precise ISO 622 / 29″ / Road specifications, with easy-to-install Presta valves and 607mm ERD, they ensure compatibility with a wide range of hubs and drivetrains. Built for performance and style, the black anodized finish adds a sleek, modern look suitable for all mountain or gravel bikes. Whether you’re upgrading your wheelset or building from scratch, SunRingle Duroc 40 rims combine advanced materials, welded seam construction, and tubeless technology to optimize ride quality, durability, and confidence on every trail. Elevate your cycling experience with these high-quality rims, engineered for enthusiasts and professionals who demand the best from their gear.