The Shadow Cranium Sprocket delivers precision engineering for demanding BMX riders. Machined from 7075-T6 aluminum alloy and measuring 5mm thick, this sprocket combines durability with lightweight performance at just 3.1 oz. (25T). Features 1/8" flat and offset teeth for reliable chain engagement, a 24mm bore, and includes both 19mm and 22mm adaptors for versatile drivetrain compatibility. Available in 25T and 28T sizes to match your riding style and gearing preferences.