Zipp Service Course SL Stem – 120mm Aluminum Matte Black

The Zipp Service Course SL Stem is engineered for road cyclists seeking peak performance without compromise—delivering unmatched power transfer paired with featherlight weight through its forged 7075 aluminum construction. Designed to excel in high-intensity scenarios like criterium sprints or aggressive accelerations on technical climbs, this stem’s 1.85 grams per newton meter stiffness-to-weight ratio ensures zero flex under even the most explosive efforts. Whether chasing group rides or racing against the clock, every watt you generate translates directly into forward momentum thanks to its rigid yet lightweight architecture.

Key Features:
– Forged 7075 Aluminum: A material known for its exceptional strength-to-weight ratio ensures durability without excess bulk—ideal for riders prioritizing both speed and longevity on demanding terrain.
– CNC-Machined Faceplate: Precision-cut grooves reduce unnecessary material while maintaining structural integrity, offering sleek aerodynamics critical during time trials or high-speed descents.
– Titanium Hardware & TORX Bolts: Corrosion-resistant fasteners with TORX heads guarantee consistent torque readings across repeated adjustments—perfect for custom setups whether fine-tuning cockpit geometry on gravel adventures or optimizing fit ahead of competitive events.

Unlike stems that prioritize minimal weight at the cost of responsiveness, this design balances both seamlessly—making it equally at home on century rides where comfort meets efficiency as it is in criteriums where split-second accelerations decide victories. Its versatility suits everything from aggressive road racing to endurance touring, delivering confidence-inspiring stiffness paired with smooth handling under load—all while keeping rotational mass low enough to suit lightweight builds without sacrificing punchy power delivery.