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  3. SHIMANO ST-R7170-R

SHIMANO ST-R7170-R Right Rear Disc Brake Shifter 192790234793 105 Right/rear DI2

St-r7170-r Shimano 105 Right/rear Disc Brake Di2 Shifter Pristine

( Brand: Shimano ), ( Manufacturer Part Number: ST-R7170-R ), ( Part Type: Disc ), ( Color: Black ), ( Compatible Bike Type: Road Bike ), ( Material: Aluminum ), ( Number Of Speeds: 12 Speed ), ( Set Includes: Shifters ), ( Shifter Style: Electronic ), ( UPC: 192790234793 )

Review SHIMANO 105 Right/rear Disc Brake Di2 Shifter Pristine

The **Shimano ST-R7170-R 105 Right/ Rear Disc Brake Di2 Shifter** is a precision-engineered component designed to elevate the performance and responsiveness of your road or gravel bicycle, seamlessly integrating Shimano s cutting-edge Di2 electronic shifting system with the reliability and efficiency of the 105 group. This shifter represents the pinnacle of Shimano s mid-range offerings, blending lightweight construction with robust build quality to deliver smooth, consistent shifts under even the most demanding conditions. Built around a compact, ergonomic lever that prioritizes rider comfort and control, the R7170-R features a sleek, aerodynamic design with a textured grip pad that ensures a secure, fatigue-free hold during long rides. The integration of Di2 technology eliminates the need for traditional cable actuation, replacing it with wireless electronic signals that transmit shifting commands with millisecond precision, reducing lag and enhancing the overall riding experience.

Under the hood, the shifter incorporates Shimano s advanced **STI (Shimano Total Integration)** design, allowing for seamless integration with compatible brake levers, such as the **ST-R7170-R** or **ST-R7100-R**, to provide a unified control system for both braking and shifting. The electronic interface is managed via the **Di2 Electronic Shift System**, which communicates with the **CS-HG900 or CS-HG910** rear derailleur and **CS-HG900 or CS-HG910** front derailleur (if equipped) to ensure flawless gear changes, even at high speeds or under heavy load. The shifter s **105-grade components** include a durable aluminum housing, reinforced shift cables, and a robust shift mechanism that resists wear and tear, ensuring longevity and reliability across a wide range of riding conditions.

One of the standout features of the R7170-R is its **adjustable shift feel**, allowing riders to fine-tune the resistance and response of the shifter to their personal preference. This customization extends to the **Di2 Shift Control**, which can be programmed via the **Ergo No.2 or Ergo No.3** grips or the **Di2 Tool**, enabling adjustments for shift timing, indexing, and even the ability to remap shift buttons for a more intuitive operation. The shifter also supports **Shimano s STI Brake Lever Compatibility**, ensuring that the braking system remains responsive and consistent with the electronic shifting, providing a harmonized feel that enhances rider confidence and control. Whether navigating tight corners, climbing steep gradients, or cruising on flat terrain, the R7170-R delivers a refined and engaging riding experience that sets it apart from traditional mechanical shifting systems.

Built to Shimano s exacting standards, the **ST-R7170-R** is compatible with **11-speed road and gravel drivetrains**, making it an ideal choice for riders seeking a balance of performance, durability, and innovation. The shifter s compact size and streamlined profile ensure it fits seamlessly into most frame and fork designs, while its **IPX7 waterproof rating** guarantees reliable operation even in wet or muddy conditions, a crucial feature for gravel and all-weather road cycling. Additionally, the shifter s **lightweight construction** contributes to an overall reduction in unsprung mass, improving pedal response and efficiency without compromising on build quality. Whether paired with a high-end road bike or a versatile gravel rig, the **Shimano ST-R7170-R 105 Di2 Shifter** is a testament to Shimano s commitment to pushing the boundaries of cycling technology, offering riders a blend of sophistication, performance, and unmatched precision.

The **Shimano ST-R7170-R 105 Right/ Rear Disc Brake Di2 Shifter** is a mid-range Di2 shifter designed for road and gravel bikes equipped with hydraulic disc brakes. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Di2 Integration**

- The shifter is part of Shimano s Di2 electronic shifting system, which offers precise, consistent, and quick shifts. This eliminates cable drag and reduces maintenance compared to mechanical shifting.

- Di2 provides real-time feedback, allowing for smoother transitions between gears, especially useful in hilly or technical terrain.

- The system is compatible with other Di2 components (e.g., derailleurs, battery, and display units), making it a future-proof investment if you plan to upgrade other parts.

2. **Compatibility and Versatility**

- Designed for **105 groupsets**, it pairs well with the **R7170 105 rear derailleur** and other 105 components, offering a balanced performance-to-price ratio.

- Works with **hydraulic disc brakes**, making it suitable for road bikes, gravel bikes, and even light touring setups where disc brakes are preferred.

- Compatible with **11-34t cassette ranges** (common for 105), providing a wide gearing spread for varied riding conditions.

3. **Durability and Build Quality**

- Shimano s 105 components are known for their robust construction, with high-quality materials like aluminum and durable coatings to resist wear and corrosion.

- The shifter is designed to handle frequent use, though it is not as heavy-duty as higher-end groupsets like Ultegra or Dura-Ace.

4. **Weight**

- While not the lightest option (Di2 systems add some weight compared to mechanical shifting), the ST-R7170-R is relatively lightweight for a mid-range Di2 shifter, making it a practical choice for performance-oriented riders.

5. **Ease of Use**

- Di2 shifting is intuitive once you get used to it, with no cable tensioning or adjustment required. The shifter s ergonomics are well-designed for comfort during long rides.

- The system includes a **shift button** that can be programmed for one-step or two-step shifts, allowing for customization based on preference.

6. **Resale Value**

- 105 components hold their value reasonably well, especially if the bike remains in good condition. This can be beneficial if you decide to sell or upgrade later.

7. **Compatibility with Other Shimano Di2 Components**

- If you already own or plan to buy other Di2 parts (e.g., a battery, display, or derailleur), this shifter will integrate seamlessly without compatibility issues.

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### **Cons**

1. **Cost**

- Di2 systems are significantly more expensive than mechanical shifting. The ST-R7170-R itself is priced higher than a comparable mechanical shifter, and you ll also need to budget for a Di2 battery, display, and potentially a derailleur if you re converting from mechanical.

- The initial investment may be a barrier for riders on a tight budget, though the long-term benefits (ease of use, reliability) can justify the cost.

2. **Battery Dependency**

- Di2 requires a battery (typically a 10.8V 1400mAh or similar) to power the shifting. While the battery lasts for thousands of shifts, it will eventually need replacement, adding to maintenance costs.

- If the battery dies mid-ride, you ll need a backup battery or a way to recharge it, which can be inconvenient in remote areas.

3. **Weight of Di2 System**

- Di2 components are heavier than their mechanical counterparts. While the difference is subtle, it can add up when considering the entire groupset (e.g., derailleur, shifters, battery). This may not be a significant issue for most riders but could matter for ultra-lightweight setups.

4. **Learning Curve**

- Shifting electronically requires getting used to the feel and timing of the shifts. Some riders may initially struggle with overshooting gears or misjudging shift timing, especially in steep climbs or descents.

- The system lacks the tactile feedback of mechanical shifting, which some riders prefer for a more "connected" feel to the bike.

5. **Potential for Electronic Issues**

- While rare, Di2 systems can experience electronic glitches, such as shifting errors or connectivity issues with the display or derailleur. These are usually fixable with updates or resets but can be frustrating if they occur at inopportune times.

- If the display or battery fails, you may need to carry spare parts or tools to troubleshoot, which isn t necessary with mechanical systems.

6. **Limited Customization**

- Unlike mechanical systems, Di2 shifting is less customizable in terms of cable tension or derailleur indexing. Adjustments are typically made via the display or software, which may not offer the same level of fine-tuning as mechanical setups.

7. **Compatibility with Non-Shimano Components**

- While Di2 is a robust system, it is proprietary to Shimano. If you ever consider switching to non-Shimano components (e.g., SRAM eTap), you ll need to replace the entire Di2 system, which can be costly.

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### **Conclusion**

The **Shimano ST-R7170-R 105 Di2 shifter** is an excellent choice for riders who prioritize **precision shifting, ease of use, and long-term reliability** over cost savings. It bridges the gap between entry-level mechanical systems and high-end electronic shifting, offering a balanced performance for road and gravel bikes with hydraulic disc brakes. The Di2 integration ensures smooth, consistent shifts and reduces maintenance compared to mechanical systems, making it ideal for riders who want to minimize fuss while enjoying advanced technology.

However, the **higher upfront cost, battery dependency, and learning curve** may not appeal to budget-conscious riders or those who prefer the simplicity of mechanical shifting. If you re already invested in Shimano s Di2 ecosystem or value the convenience and performance it provides, this shifter is a solid mid-range option. For riders who are new to electronic shifting, it s worth spending time to adapt to the system s nuances.

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### **Recommendation**

**Buy the ST-R7170-R if:**

- You re upgrading from mechanical shifting and want to experience Di2 s benefits (smoothness, precision, reduced maintenance).

- You re building or upgrading a **road or gravel bike with hydraulic disc brakes** and want a reliable mid-range groupset.

- You already own or plan to buy other **Shimano Di2 components** (e.g., derailleur, battery, display), as this shifter will integrate seamlessly.

- You value **long-term durability and ease of use**, even if it means a higher initial investment.

- You ride in varied terrain (hills, technical sections) where precise shifting is advantageous.

**Avoid the ST-R7170-R if:**

- You re on a tight budget and prefer the lower cost of mechanical shifting.

- You re new to electronic shifting and are unsure whether you ll adapt to the system s feel.

- You prioritize **ultra-lightweight components** and are concerned about the added weight of Di2.

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

- You rarely ride and prefer the simplicity and lower maintenance of mechanical systems.

**Alternative Considerations:**

- If you like the idea of Di2 but want to save money, consider the **Shimano Deore SL-M7000-R** (a more affordable Di2 shifter for mountain bikes, though not as refined as 105).

- For a mechanical alternative, the **Shimano 105 RD-R7170** (mechanical rear derailleur) paired with **Shimano 105 shifters** (e.g., ST-R7170) offers similar performance without the Di2 cost.

- If you re open to other brands, **SRAM Force eTap AXS** is another high-quality electronic shifting system, though it requires a different ecosystem.

In summary, the **ST-R7170-R is a strong mid-range Di2 shifter** that excels in performance and reliability for riders who can justify the investment. For most road and gravel riders, it s a worthwhile upgrade over mechanical systems.

Details:

Unlike mechanical shifters, the Di2 system uses wireless electronic signals to control gear changes, eliminating need for traditional shift cables. #Road #Di2 #Electronic Shifting #Disc Brake #Hydraulic Braking The Shimano 105 ST-R7170-R is a right-side dual-control lever combining electronic shifting and hydraulic disc braking for road bikes. Shimano 105 ST-R7170-R Right/Rear Disc Brake Di2 Shifter PRISTINE > Equip your training with Would've today. Detailed s: Every product is accompanied by an individual outlining its unique features, specifications, and any noted imperfections.

We currently have the following examples of this item in stock. Shimano 105 ST-R7170-R Right/Rear Disc Brake Di2 Shifter PRISTINE In pristine condition, possibly a few demo miles. The lever features adjustable reach to customize the distance between handlebar and lever, a raised hood peak for ergonomics, button functions via E-TUBE app. Browse the selections above or view items below.

N/A Used Not new; definitely used; working, but only evaluated at a generic level. Reach adjustment and ergonomic design make this suitable for riders with varying hand sizes preferences, while wireless connectivity maintains a clean cockpit aesthetic. We evaluate each component based on the factors that matter most for part type.

part #: str7170 prices

  • $239.99-$379.99

specifications ribicycl:

  • brand: Shimano
  • mpn: St-r7170-r
  • part type: Disc
  • color: Black
  • compatible bike type: Road Bike
  • material: Aluminum
  • number of speeds: 12 Speed
  • set includes: Shifters
  • shifter style: Electronic
  • upc: 192790234793

returns ribicycl:

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

general ribicycl:

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

offer ribicycl:

  • options: Ship-to-home
  • availability: In Stock
  • started: March 12, 2026
  • sold: 0
  • quantity: 1

shipping ribicycl:

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

seller ribicycl:

  • rating: 100.0%
  • # reviews: 629
  • city: Saint Petersburg, Florida

payments ribicycl:

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part type: disc, compatible bike type: road bike, number of speeds: 12 speed, set includes: shifters, shifter style: electronic,
category: sporting goods > cycling > bicycle components parts > shifters, color: black, material: aluminum, sku: 17076599550307793,
Shimano ST-R7170 Is Similar To:
ribicycl logo
3 offers $239.99–$379.99 USD
  • New. Offer #1 priced at $379.99 + $28.40 shipping estimate = $408.39* total. Creates a clean cockpit with wireless connection and enhances the aesthetic of your bike while keeping shifting lightning fast. The Shimano 105 Di2 Shift/Brake lever features Di2 electronic shifting for precise, intuitive gear changes to even more riders.+$28.40 shipping
  • New other (see details). Offer #2 priced at $375.00 + $13.00 shipping estimate = $388.00* total. +$13.00 shipping
  • New. Offer #3 priced at $239.99 + $11.95 shipping estimate = $251.94* total. 105 -R Di2 Shift/Brake Lever.+$11.95 shipping

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