1. Bicycle Rims For Sale
  2. sku: 17178250959337793
  3. SHIMANO ST-6870-L

SHIMANO ST-6870-L Ultegra Left Front Rim Brake Shifter 5056389584896 Left/front DI2

St-6870-l Shimano Ultegra Left/front Rim Brake Di2 Shifter Very Good

( Brand: Shimano ), ( Manufacturer Part Number: ST-6870-L ), ( Color: Black ), ( Compatible Bike Type: Road Bike ), ( Material: Aluminum ), ( Number Of Speeds: 11 Speed ), ( Part Type: Brake/shifter Combo Left ), ( Set Includes: Shifters ), ( Shifter Style: Drop Bar ), ( UPC: 056389584896 )

Review SHIMANO Ultegra Left/front Rim Brake Di2 Shifter Very Good

The **Shimano ST-6870-L Ultegra Left/Front Rim Brake Di2 Shifter** represents the pinnacle of Shimano s electronic shifting technology, engineered for cyclists who demand precision, reliability, and seamless integration into their high-performance road or gravel setups. Designed exclusively for use with rim brake systems, this left-side shifter is a masterpiece of ergonomic engineering and electronic innovation, tailored to deliver effortless, lag-free gear changes with the touch of a finger. Built with Ultegra s signature blend of lightweight aluminum and durable materials, the ST-6870-L is both robust and refined, ensuring it can withstand the rigors of daily training and competitive riding while maintaining a sleek, premium aesthetic. The shifter s compact yet intuitive design features a smooth, slightly curved bar profile that cradles the hand naturally, reducing fatigue during long rides and allowing for quick, confident shifts without compromising control. At its core, this shifter is powered by Shimano s **Di2 electronic shifting system**, a wireless, battery-operated marvel that eliminates the need for cables, offering instant, precise responses to your inputs. The system s advanced **STEPS (Shimano Total Electronic Power and Shift System)** technology ensures that shifts are executed with minimal effort, even under demanding conditions, while the **Ultegra-grade electronics** provide a level of responsiveness and consistency that rivals mechanical systems in terms of reliability. The left-side placement of this shifter is ideal for riders who prefer a more balanced feel or those who opt for a left-side brake lever setup, offering a harmonious pairing with the corresponding ST-6870-R right-side shifter for a fully symmetrical or asymmetrical ergonomic configuration. Whether paired with a lightweight carbon frame or a durable steel rig, the ST-6870-L seamlessly integrates into modern road or gravel bikes, enhancing the riding experience with its blend of cutting-edge technology and Shimano s legendary craftsmanship. For cyclists who refuse to compromise on performance, this shifter is not just an upgrade it s a statement of intent, embodying the future of shifting technology with every precise, silent transition.

The **Shimano ST-6870-L Ultegra Left/Front Di2 Rim Brake Shifter** is a high-end component designed for road cycling, offering advanced electronic shifting and performance. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **Electronic Di2 Shifting**

The Di2 system provides ultra-precise, responsive, and consistent shifting with minimal effort. Unlike mechanical systems, Di2 eliminates cable stretch, friction, and weather-related issues, ensuring reliable performance in all conditions. The wireless nature of the system also reduces maintenance compared to traditional cable-based setups.

2. **Ultegra-Level Performance**

As part of Shimano s Ultegra lineup, this shifter is built with high-quality materials and refined engineering. It delivers smooth, predictable shifts and is compatible with other Ultegra components, ensuring a cohesive and high-performance drivetrain.

3. **Left/Front Mounting Flexibility**

The "L" designation means this shifter is designed for left-side or front-mount applications, such as on a drop bar or a hybrid bike with a flat bar. This versatility makes it suitable for a wider range of bikes, including road, gravel, and some endurance-oriented setups.

4. **Durability and Build Quality**

Shimano s Ultegra components are known for their robustness. The ST-6870-L features a sturdy construction with a durable housing and reliable electronics, reducing the risk of failure over time. The system is also designed to handle frequent shifting without wear issues.

5. **Compatibility with Modern Bikes**

This shifter works seamlessly with Shimano s Di2-compatible groupsets, including Ultegra, Dura-Ace, and some higher-end 105 models. It also integrates well with modern frame designs, including those with integrated battery mounts or complex cable routing.

6. **Adjustability and Customization**

Di2 systems allow for fine-tuning of shift feel, response time, and even shift mapping (e.g., adjusting the range of the shifter lever). This level of customization can be appealing to riders who prioritize performance optimization.

7. **Reduced Maintenance**

With no cables or external housing to wear out, Di2 systems require less maintenance than mechanical setups. This can be a significant advantage for riders who prefer low-friction, hassle-free operation.

8. **Future-Proofing**

Shimano continues to update its Di2 software and hardware, meaning this shifter may remain compatible with future Shimano drivetrains and software improvements for an extended period.

---

### **Cons**

1. **High Cost**

The ST-6870-L is a premium component, and the entire Di2 system (including the battery, battery pack, and compatible groupset) is significantly more expensive than mechanical alternatives. For example, a full Di2 Ultegra setup can cost thousands of dollars, making it a substantial investment.

2. **Battery Dependency**

Di2 shifting relies on a battery pack, which must be charged regularly. While the battery life is decent (typically lasting several hundred kilometers per charge), it adds complexity to the system. Riders must carry a spare battery or charger, and battery failure mid-ride can be inconvenient or disruptive.

3. **Weight**

Di2 systems are heavier than their mechanical counterparts due to the electronics, battery, and wiring. While the difference may not be drastic, it can contribute to overall bike weight, which may be a consideration for climbers or riders prioritizing lightweight setups.

4. **Complexity and Learning Curve**

Di2 requires familiarity with electronic shifting, including setup, calibration, and troubleshooting. New users may need to spend time learning how to adjust shift parameters, replace batteries, or diagnose issues (e.g., if the system fails to shift). Mechanical systems are far simpler in comparison.

5. **Limited Compatibility with Non-Shimano Systems**

Di2 is proprietary to Shimano, meaning it won t work with non-Shimano electronic shifting systems (e.g., SRAM s eTap). If a rider ever switches brands, they would need to replace the entire electronic system, which can be costly.

6. **Potential for Electronic Failure**

While rare, electronic components can fail due to water ingress, software glitches, or manufacturing defects. Unlike mechanical systems, which can often be repaired with basic tools, Di2 failures may require professional servicing or replacement parts, adding to maintenance costs.

7. **Aesthetic and Aesthetic Considerations**

Some riders prefer the clean, minimalist look of mechanical systems. Di2 wiring and battery packs can be visually intrusive, especially on bikes with minimalist or retro aesthetics. While Shimano has improved the routing of Di2 cables, they still require careful planning during bike setup.

8. **Overkill for Casual Riders**

If a rider primarily uses their bike for leisurely rides or commuting without demanding performance requirements, the benefits of Di2 may not justify the cost. Mechanical shifting can be perfectly adequate for such use cases with minimal upkeep.

---

### **Conclusion**

The **Shimano ST-6870-L Ultegra Di2 Left/Front Rim Brake Shifter** is an excellent choice for riders who prioritize precision, reliability, and performance in their shifting experience. Its electronic shifting eliminates the frustrations of mechanical systems, such as cable stretch and inconsistent shifts, and its Ultegra-level build quality ensures durability. The flexibility of left/front mounting makes it versatile for various bike types, while the integration with other high-end Shimano components creates a cohesive and powerful drivetrain.

However, the high cost, battery dependency, and added complexity may not be justified for every rider. Casual cyclists or those on a budget may find mechanical alternatives more practical, while competitive or performance-oriented riders who demand the best in shifting technology will likely appreciate the advantages of Di2.

---

### **Recommendation**

**Buy the ST-6870-L Ultegra Di2 shifter if:**

- You are investing in a high-end Shimano drivetrain (e.g., Ultegra or Dura-Ace) and want seamless electronic shifting.

- You prioritize precision, consistency, and reduced maintenance over cost.

- You ride in conditions where mechanical shifting might fail (e.g., muddy, wet, or dusty environments).

- You appreciate the customization and performance benefits of Di2, such as shift mapping and quick, responsive shifts.

- You are building or upgrading a bike that will be used for racing, endurance riding, or serious training.

**Avoid the ST-6870-L Ultegra Di2 shifter if:**

- You are on a tight budget or can achieve similar performance with a mechanical Ultegra or 105 groupset.

- You prefer the simplicity and lower cost of mechanical shifting and are not concerned with cable-related issues.

- You primarily ride casually or for commuting and do not need the advanced features of Di2.

- You are unsure about the maintenance and complexity of managing a battery-powered system.

- You plan to mix Shimano Di2 with non-Shimano components in the future, as compatibility may become an issue.

For most serious road cyclists who can afford it, the **ST-6870-L Ultegra Di2 shifter is a worthwhile investment** that enhances the riding experience with its reliability and performance. However, weigh the pros and cons carefully against your budget, riding style, and priorities to determine if it aligns with your needs.

Details:

N/A Used Not new; definitely used; working, but only evaluated at a generic level. Through E-Tube software customization, you can program five different rear shifting speeds, enable multi-shift dumping through the entire cassette with a single sustained button press, and update firmware after purchase. The reach adjustment accommodates different hand sizes. Detailed s: Every product is accompanied by an individual outlining its unique features, specifications, and any noted imperfections.

We evaluate each component based on the factors that matter most for part type. Shimano Ultegra ST-6870-L Left/Front Rim Brake Di2 Shifter VERY GOOD > Equip your training with Would've today. Updated to latest firmware. Shimano Ultegra ST-6870-L Left/Front Rim Brake Di2 Shifter VERY GOOD In very good shape overall, with a wear spot at the tip of lever arm.

Browse the selections above or view items below. #Road #11 Speed #Rim Brake #Di2 #Electronic Shifting The Shimano Ultegra ST-6870 is an electronic dual-control lever designed for 11-speed road bikes using Shimano Di2 system. We currently have the following examples of this item in stock. The lever uses E-Tube wiring technology, which simplifies cable routing and allows for satellite shifter placement on the drops or tops of bars.

Cleaning: Every used component is thoroughly cleaned to remove grease and dirt, restoring it its best possible condition. Shifting requires only 2mm of button movement and a light touch significant advantage for cyclists with hand fatigue issues, carpal tunnel, or arthritis.

part #: st6870 prices

  • $128.12-$150.00

specifications ribicycl:

  • brand: Shimano
  • mpn: St-6870-l
  • color: Black
  • compatible bike type: Road Bike
  • material: Aluminum
  • number of speeds: 11 Speed
  • part type: Brake/shifter Combo Left
  • set includes: Shifters
  • shifter style: Drop Bar
  • upc: 056389584896

returns ribicycl:

  • method: Money back
  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

seller ribicycl:

  • # reviews: 650
  • city: Saint Petersburg, Florida
  • rating: 100.0%

payments ribicycl:

  • other
  • wallet: Apple-pay
  • credit card: Discover

offer ribicycl:

  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • started: March 19, 2026

shipping ribicycl:

  • carrier: USPS
  • cost: $0.00
  • class: Standard
  • type: Fixed
  • service: USPS Ground Advantage
  • transit: 5-9 Days

general ribicycl:

  • Cycling > Bicycle Components Parts > Shifters
  • condition: Used
compatible bike type: road bike, number of speeds: 11 speed, part type: brake/shifter combo left, set includes: shifters, shifter style: drop bar,
category: sporting goods > cycling > bicycle components parts > shifters, color: black, material: aluminum, sku: 17178250959337793,
Shimano ST-6870 Is Similar To:
ribicycl logo
5 offers $128.12–$150.00 USD
  • Used. Offer #1 priced at $128.12 + $33.00 shipping estimate = $161.12* total. +$33.00 shipping
  • Used. Offer #2 priced at $150.00 + $9.35 shipping estimate = $159.35* total. New Rubber hoods! Good shape Di2 Ultegra 6870 11 speed Shifters.+$9.35 shipping
  • Used. Offer #3 priced at $129.00 + $0.00 shipping estimate = $129.00* total. These are di2 electronic shifters for rim brakes Levers function as they should with zero issues.FREE SHIPPING
  • Used. Offer #4 priced at $178.75 + $25.03 shipping estimate = $203.78* total. Compatible with 11 Speed Dura Ace Di2 and 11 Speed 105 Di2 models, these shifters are crafted for those who demand precision and quality.+$25.03 shipping
  • Used. Offer #5 priced at $129.95 + $7.37 shipping estimate = $137.32* total. Clearance 20%+ Zero issues, functionally perfect.+$7.37 shipping

Copyright © ribicycl.com