Unleash precision, control, and engineered confidence with the Controltech RAS-23 Stem — a component designed not just to connect, but to elevate. Engineered for discerning riders who demand razor-sharp responsiveness and supreme handling, the RAS-23 delivers a calculated balance between lightweight agility and structural integrity, redefining what a stem can achieve in competitive performance.
Crafted from 3D-forged 6061 aluminum, this stem boasts exceptional stiffness-to-weight ratio. Forging refines the internal grain structure of the alloy, resulting in superior mechanical strength over traditional casting — allowing riders to push harder, sprint faster, and descend with confidence. The result is a stem that’s both stiffer and lighter, minimizing energy loss and maximizing handling feedback across terrains.
The RAS-23's faceplate is built from the same 6061 aluminum alloy, known for its steel-like strength without the weight penalty, ensuring your cockpit remains solid even under the most aggressive load from sprinting or technical trails. This attention to material science ensures durability in both high-watt road sprints and rugged off-road applications.
Featuring a reversible -/+ 5° rise/drop angle, the stem allows for fine-tuned aerodynamic positioning. Whether you're chasing marginal aero gains on the road or looking for upright control on steep trail descents, the RAS-23 adapts to your style with precision. Available in multiple lengths from 60mm to 80mm, the stem lets you dial in exact fit geometry for improved power transfer and reduced fatigue over long rides.
Compatible with 31.8mm handlebars and 28.6mm steerer tubes, this stem is a versatile performer, purpose-built for both road warriors and mountain adventurers alike. Its refined minimalistic aesthetic blends seamlessly with modern builds, while its reliability ensures performance doesn’t falter even in the most demanding conditions.
Whether you're carving through alpine descents, grinding up punishing switchbacks, or hammering on the flats, the Controltech RAS-23 stem is your command center — built to amplify your every movement with deliberate strength and unparalleled control.
