Boost your ride with the SRAM XX SL Eagle T-Type XS-1299 Cassette, engineered for precision and durability in demanding cycling conditions. Constructed with a fully machined steel X-Dome architecture for gears 1-9 and an ultra-lightweight all-aluminum Spider Cog for gears 10-12, delivering a perfect balance of strength and weight savings. Designed for 12-speed Eagle drivetrain systems with an expansive 10-52t gear range, providing smooth, reliable shifting under load and optimal gear progression for varied terrain. Features a 55mm chainline compatibility, ensuring a more moderate chain angle for enhanced chain wear longevity and improved shifting accuracy across diverse bike setups. Innovative design utilizes a widely compatible XD driver body with a clearly marked Setup Cog for straightforward installation, making it ideal for mountain biking enthusiasts seeking high-performance, all-mountain gearing solutions. Discover the SRAM XX SL Eagle T-Type XS-1299 Cassette - the pinnacle of 12-speed drivetrain performance optimized for aggressive trail riding and enduro racing. With a remarkable gear range of 10-52 teeth and innovative engineering, this lightweight, durable cassette delivers seamless shifting under load, superior precision, and long-lasting quality. Materials & Construction: Crafted from high-strength, fully machined steel cogs for gears 1-9 and ultra-lightweight aluminum for gears 10-12, the XX SL Eagle T-Type cassette features a robust X-Dome architecture that provides superior durability and rigidity. The combination of steel and aluminum materials optimizes weight savings without compromising strength, making it SRAM's lightest 10-52t Eagle cassette to date-just 341 grams. Performance & Engineering: Designed for aggressive trail and enduro riders, this cassette offers an enormous 520% gear range, allowing for climbing steep ascents and sprinting on flat terrain with ease. The full X-SYNC design ensures perfect chain engagement and precise shifting, especially under heavy load, thanks to the distortion-resistant teeth that maintain optimal chain contact. The 55mm chainline improves chain angle, promoting longer gear wear and enhanced shifting accuracy. Components & Technology: Equipped with a fully machined, hardened steel X-Dome architecture and an ultra-lightweight aluminum Spider Cog, this cassette provides exceptional longevity and smooth operation. It utilizes a widely compatible XD driver body, ensuring easy integration with most SRAM and compatible hubs. The clearly marked Setup Cog simplifies installation, making setup straightforward for both pros and enthusiasts. Style & Use Case: With a sleek silver and black finish, the SRAM XX SL Eagle T-Type cassette adds a aesthetic to your bike. Designed specifically for 12-speed Eagle Transmission systems, it excels in demanding trail conditions where reliable, rapid shifts and durability are essential.