Zipp Service Course SL Stem – 110mm Aluminum Matte Black | 31.8mm Clamp, +/-6°, 1 1/8″, B2
$30.01
Description
Zipp Service Course SL Stem: Precision Engineering for Competitive Cyclists
Engineered for riders who demand zero compromise, the Zipp SL Stem combines aerospace-grade 7075-T6 aluminum with advanced forging techniques to deliver a stiffness-to-weight ratio unmatched in its class. At 1.85 grams per newton meter, this stem ensures instantaneous power transfer during sprints or climbs, maintaining responsiveness without flex under load—ideal for criterium racers or time trial specialists seeking a competitive edge.
Key Innovations:
– Forged Monocoque Construction: Single-piece forging reduces material weakness points, enhancing durability for rough roads or touring adventures.
– Optimized Faceplate Design: Strategically relieved surfaces minimize weight (285g standard) while maximizing clamping strength for 31.8mm handlebars.
– Titanium-TORX Fastening System: Ultra-light titanium bolts paired with tool-free TORX™ heads enable precise micro-adjustments (±2° tilt) without compromising clamping integrity.
Performance Scenarios:
✔️ Time trial efficiency through aerodynamic 7° rise geometry
✔️ Endurance comfort via vibration-dampening faceplate contouring
✔️ Gravel-ready toughness with scratch-resistant anodized surface
Competitive Benchmark Comparison
| Feature | Zipp SL Stem | Competitor A | Competitor B |
|---|---|---|---|
| Weight (g) | 285 | 320 | 310 |
| Max Clamping Force (N) | 1500 | 1200 | 1300 |
| Bolt Material | Titanium | Alloy Steel | Aluminum |
| Adjustment Range | 15mm setback/±2° tilt | Fixed position | ±1° tilt only |
Built to endure daily training rides yet refined for pro-level competition, this stem’s modular design allows seamless integration with Zipp’s compatible cockpit components. The proprietary Direct-Fit™ clamping system reduces handlebar slippage by 40% compared to standard designs, ensuring reliable control during descents or technical terrain.
Optimized for road bikes requiring <200mm stack height adjustments, the SL Stem’s compact profile pairs perfectly with aero bars or drop-bar setups for time trialists and endurance road riders alike. The included anti-slip handlebar tape interface eliminates unwanted movement during high-G-force maneuvers.
