SPECIALIZED 20021-1118 Tarmac Stem SL7/SL8 120MM 12

( Brand: Specialized ), ( Manufacturer Part Number: 20021-1118 ), ( Part Type: Stem ), ( Color: Black ), ( Stem Type: Threadless ), ( Material: Aluminum ), ( Item Length: 120mm 12degree ), ( Steerer Tube Diameter: 1 1/8 In ), ( Clamp Diameter: 31.8 Mm ), ( Compatible Bike Type: Road Bike ), ( Item Width: 1.9 In ), ( Item Weight: 166 Grams )

Review SPECIALIZED 2002 1-1118 S works Tarmac Sl7/sl8 Stem 120mm 12 Degree

The **S-Works Tarmac SL7/SL8 Stem (20021-1118)** is a precision-engineered, high-performance road bike component designed exclusively for Shimano s iconic S-Works Tarmac series, catering to elite cyclists and competitive riders who demand the utmost in aerodynamics, stiffness, and weight savings. Crafted from lightweight, high-modulus carbon fiber, this stem features a meticulously optimized shape that minimizes drag while maintaining structural integrity, allowing for a more aggressive, aerodynamic riding position. The **120mm length** and **12-degree rise** provide a balanced compromise between stability and aerodynamics, making it ideal for riders who prioritize speed and efficiency on the road without sacrificing control. The stem s **S-Works-specific design** incorporates subtle contours and a tapered profile, reducing turbulence and improving airflow over the handlebars, which translates to noticeable gains in speed during high-intensity efforts. Engineered with Shimano s proprietary **S-Works carbon technology**, the stem exhibits exceptional stiffness and torsional rigidity, ensuring minimal flex under heavy braking forces or aggressive pedaling, which enhances power transfer and responsiveness. The **integrated brake mount** is precision-machined for optimal alignment with the SL7/SL8 s hydraulic disc brake system, ensuring consistent braking performance and reducing the risk of lever flutter. Additionally, the stem s **ergonomic grip surface** is designed to provide a secure, non-slip hold, even in wet or sweaty conditions, while its **low-profile design** minimizes interference with the rider s arms, allowing for a more natural and fatigue-resistant position over long distances. Whether used on the SL7 s aggressive, drop-bar layout or the SL8 s more upright, endurance-oriented geometry, this stem is a critical component for riders pushing the boundaries of speed and efficiency on the road. Its combination of aerodynamics, stiffness, and weight savings typically weighing just a few grams makes it a standout choice for those seeking a competitive edge in time trials, criteriums, or long-distance races.

### **Pros and Cons of buying a 2021-1118 S-Works Tarmac SL7/SL8 Stem (120mm, 12 )**

#### **Pros**

1. **Performance-Oriented Design** The S-Works Tarmac SL7/SL8 stem is engineered for aggressive, high-performance riding. Its aerodynamic shape and lightweight construction reduce drag, making it ideal for time trials, group rides, and competitive cycling.

2. **High-End Materials** Made from carbon fiber, the stem is strong yet lightweight, improving pedal efficiency and handling. The material also offers stiffness, which translates to better power transfer and responsiveness.

3. **Adjustable Angle (12 )** The 12-degree rise allows for a more aggressive, forward-leaning position, which is beneficial for speed and aerodynamics. This angle suits riders who prefer a more aggressive stance rather than a neutral or upright one.

4. **Compatibility with S-Works Tarmac Frame** If you own or plan to buy the matching S-Works Tarmac SL7/SL8 frame, this stem ensures a seamless, optimized fit. The integration between stem, bars, and frame enhances aerodynamics and handling.

5. **Durability** S-Works components are built to withstand high stress, making this stem suitable for intense training and racing. The carbon construction resists fatigue better than aluminum or titanium alternatives.

6. **Aesthetic Appeal** The sleek, minimalist design aligns with the premium look of the S-Works lineup, appealing to riders who value both performance and style.

7. **Compatibility with S-Works Components** Works seamlessly with other S-Works parts like the bars, seatpost, and wheels, ensuring a cohesive, high-performance setup.

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#### **Cons**

1. **Expensive** As a premium S-Works part, this stem is significantly more costly than standard stems from brands like Trek, Cannondale, or Specialized. The price reflects its performance benefits, but it may not be justified for casual riders.

2. **Specialized Fit Requirements** The 12 angle and 120mm length are optimized for the S-Works Tarmac SL7/SL8 frame. Riders with different body types or preferences may find the position uncomfortable or overly aggressive.

3. **Limited Adjustability** Unlike stems with multiple rise angles or adjustable clamps, this stem has a fixed 12 rise. Riders who prefer a more neutral or upright position may need to compromise or seek alternative stems.

4. **Weight** While lightweight, the carbon fiber construction means it s not as accessible or replaceable as a cheaper stem. If damaged, repairs or replacements will be costly.

5. **Niche Appeal** This stem is best suited for time trialists, triathletes, or competitive road cyclists. Recreational riders or those prioritizing comfort over speed may not benefit as much from its design.

6. **Potential Overkill for Some Riders** If you don t ride in a highly aerodynamic position or don t compete at a high level, the performance gains may not be worth the investment.

7. **Maintenance Sensitivity** Carbon components require careful handling to avoid damage from impacts or improper installation. Dropping the stem or mishandling it could lead to costly repairs.

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### **Conclusion**

The **2021-1118 S-Works Tarmac SL7/SL8 Stem (120mm, 12 )** is a high-performance part designed for riders who demand the absolute best in aerodynamics, stiffness, and responsiveness. It excels in competitive settings where every watt and millisecond counts, but its aggressive design and premium price make it less suitable for casual or comfort-focused riders.

If you re a **time trialist, triathlete, or competitive road cyclist** riding the matching S-Works Tarmac SL7/SL8 frame, this stem is an excellent investment that will enhance your setup. However, if you prioritize versatility, comfort, or budget, a more adjustable or standard stem from a different brand may be a better choice.

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### **Recommendation**

- You own or plan to buy the S-Works Tarmac SL7/SL8 frame.

- You ride aggressively in an aerodynamic position (e.g., time trials, triathlons, or group rides where speed is critical).

- You re willing to invest in a premium component for maximum performance.

- You prefer a fixed, high-performance setup without adjustability.

- You re a casual rider or prioritize comfort over speed.

- You don t have the matching S-Works frame and need a more versatile stem.

- You re on a tight budget and can achieve similar performance with a more affordable alternative.

- You prefer a neutral or upright riding position.

For most **competitive riders on the S-Works Tarmac SL7/SL8**, this stem is a worthwhile upgrade. For everyone else, consider alternatives like the **Trek Topstone SL, Specialized Power, or Cannondale SystemSix stems**, which offer similar performance at a lower cost or more adjustability.

Details:

120mm 12 degree Stem.

part #: 200211118 prices

• $69.95-$160.38

specifications ribicycl:

• brand: Specialized
• mpn: 20021-1118
• part type: Stem
• color: Black
• stem type: Threadless
• material: Aluminum
• item length: 120mm 12degree
• steerer tube diameter: 1 1/8 In
• clamp diameter: 31.8 Mm
• compatible bike type: Road Bike
• item width: 1.9 In
• item weight: 166 Grams

payments ribicycl:

• other
• credit card: Discover
• wallet: Paypal

seller ribicycl:

• rating: 100.0%
• city: Somerset, New Jersey
• # reviews: 11

offer ribicycl:

• options: Ship-to-home
• best offers: True
• quantity: 1
• started: April 6, 2026
• availability: In Stock
• sold: 0

returns ribicycl:

• policy: No Returns

general ribicycl:

• condition: Used
• Cycling > Bicycle Components Parts > Stems

shipping ribicycl:

• class: Standard
• service: USPS Ground Advantage
• type: Calculated
• transit: 3-8 Days
• carrier: USPS
• cost: $8.72

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