Optimize your cycling setup with the Zipp Service Course Stem 105mm 31.8mm Clamp +/-25 in Blast Black, a component engineered for performance, durability, and style. Designed for road cyclists seeking reliability and precision, this stem seamlessly combines advanced materials, innovative engineering, and sleek aesthetics to elevate your ride. ### Materials & Construction Constructed from forged AL-6061 aluminum, the Zipp Service Course stem offers exceptional strength-to-weight ratio, ensuring durability without sacrificing weight savings. Its bead-blast black finish with laser-etched graphics provides a sleek, matte aesthetic that resists scratches and maintains a refined look ride after ride. ### Performance & Engineering Engineered for stiffness and reliability, this stem features a redesigned faceplate and body, enhancing overall stiffness for precise power transfer and steering responsiveness. The 105mm length with a +/-25 angle provides versatile fit options, allowing riders to customize their position for comfort and aerodynamics. Weighing only 150 grams, it's built to optimize performance while maintaining lightweight efficiency. ### Components & Technology The Zipp Service Course Stem is equipped with stainless steel TORX bolts, enabling precise torque adjustments and a secure clamp that prevents creep under high loads. The faceplate is machined and relieved for easier installation, while the 31.8mm bar clamp diameter ensures compatibility with most modern handlebars. Additionally, the stem's 1-1/8 steerer tube diameter guarantees a secure fit for a wide range of road bikes. ### Style & Use Case With its sleek black bead-blast finish and laser-etched graphics, this stem complements any road bike aesthetic-whether you're racing, training, or tackling long-distance rides. Its versatile +/-25 angle allows riders to fine-tune their cockpit for optimal comfort or aerodynamic positioning, making it suitable for both competitive racing and recreational cy