The Shimano BR-R9170 [paid link] disc brake system is a top-tier hydraulic brake designed for road cyclists who demand precise, reliable performance. Whether you’re installing these brakes for the first time or replacing an older set, one of the biggest decisions is whether to tackle the installation yourself or leave it to the professionals. In this article, we’ll break down both DIY and professional installation options, weighing their pros and cons to help you decide the best approach for your Shimano BR-R9170 [paid link] disc brake installation.

Tools and Expertise Required for DIY Installation

Installing Shimano BR-R9170 [paid link] disc brakes requires a combination of basic mechanical skills, a set of specific tools, and patience. If you’re confident in your ability to handle bike components and have some experience with bike maintenance, DIY installation may be the right option for you. Here’s a look at the tools you’ll need and the skills required to complete the job successfully.

Tools Required for DIY Installation:

• Shimano BR-R9170 hydraulic disc brake set
• Brake fluid (Shimano mineral oil [paid link])
• Bleed kit [paid link] for hydraulic brakes
• Torque wrench [paid link] (for proper tightening)
• 5mm and 8mm Allen wrenches [paid link]
• Disc brake rotor (compatible with your wheel)
• 10mm open-ended wrench
• T25 screwdriver (for adjusting calipers)
• A hydraulic brake hose cutter (if cutting hoses)
• 2.5mm Allen wrench [paid link] (for adjusting brake lever reach)
• Isopropyl alcohol (for cleaning components)

DIY Installation Process

1. Preparation: Ensure you have all necessary tools and a clean workspace. Begin by removing the old brakes, rotors, and any associated parts. Clean the frame and fork where the new brakes will be mounted.
2. Mount the Calipers: Install the calipers onto the frame or fork using the appropriate mounting bolts. Ensure the calipers are aligned with the rotor.
3. Install the Brake Levers: Attach the brake levers to the handlebars, making sure they are positioned for comfort and proper reach.
4. Route the Brake Lines: Carefully route the hydraulic lines, ensuring there are no sharp bends that could restrict fluid flow.
5. Cutting and Fitting the Brake Lines: If the brake lines are too long, use the hydraulic brake hose cutter to shorten them. Install the hose fittings and make sure they are tight to avoid any fluid leaks.
6. Rotor Installation: Attach the rotors to the wheels using the proper rotor bolts. Make sure to tighten them evenly to avoid warping the rotor.
7. Bleeding the Brakes: The most crucial part of the installation is ensuring the brake system is fully bled of air. Follow the Shimano bleed procedure for the BR-R9170 to ensure the brakes have proper hydraulic pressure.
8. Caliper Alignment and Final Adjustments: Ensure the brake calipers are centered over the rotor. Adjust the lever reach, pad spacing, and other fine settings to ensure smooth, efficient braking.

Pros of DIY Installation

• Cost-Effective: By doing it yourself, you avoid the labor costs associated with professional installation.
• Learning Experience: Installing your own disc brakes allows you to learn about the brake system, giving you more confidence in maintaining and troubleshooting future issues.
• Customization: You have complete control over the positioning of your brake levers, calipers, and brake lines, allowing for full customization of your bike’s braking setup.

Cons of DIY Installation

• Time-Consuming: If you’re new to hydraulic brake systems, it can take a considerable amount of time to complete the installation process. Mistakes can lead to costly delays.
• Skill Requirements: Hydraulic brake systems require specific knowledge to properly install and bleed the brakes. Incorrect installation can lead to poor braking performance, leaks, or even brake failure.
• Potential for Mistakes: If not done correctly, improper brake installation could compromise safety, leading to faulty braking performance or damage to the components.

Professional Installation: When to Choose a Mechanic

For cyclists who are less confident in their mechanical skills or prefer to focus on riding rather than maintenance, professional installation may be the best option. A certified bike mechanic will have the expertise, tools, and experience to ensure your Shimano BR-R9170 brakes are installed correctly and optimally.

Benefits of Professional Installation

1. Expertise: Professional bike mechanics have specialized knowledge and training to work with hydraulic disc brakes like the BR-R9170. They can handle complex tasks such as bleeding the brakes and ensuring everything is properly aligned.
2. Precision: A trained mechanic will install your brakes with a high level [paid link] of accuracy, ensuring that your brakes are set up for maximum performance and safety.
3. Time-Saving: Professional installation can be completed much more quickly than a DIY installation, allowing you to get back on the road faster.
4. Warranty Protection: Many bike shops offer a warranty on their labor, which means that if something goes wrong after installation, you can get it fixed at no extra charge.
5. Peace of Mind: Professional installation ensures that everything is done to the highest standard, which is particularly important for safety-critical components like brakes.

Drawbacks of Professional Installation

1. Cost: The biggest drawback of professional installation is the additional expense. The cost of labor can vary depending on the bike shop, but it typically ranges from $50 to $100 or more.
2. Less Control: When you rely on a mechanic, you don’t have control over the specifics of the installation process or the customization of your setup. If you prefer having your brake levers in a specific position or prefer a certain brake hose routing, professional installation may not meet your preferences.

Conclusion: Which Option Is Right for You?

The decision between DIY installation and professional installation for your Shimano BR-R9170 disc brakes ultimately depends on your experience, budget, and confidence in handling bike components. If you have the necessary tools, skills, and time, DIY installation can be a rewarding and cost-effective choice. However, if you’re uncertain about hydraulic brake systems or don’t want to risk potential issues, seeking professional help ensures the job is done correctly the first time.

No matter which option you choose, ensuring your Shimano BR-R9170 disc brakes are installed properly is essential for safety, performance, and longevity. Whether you go the DIY route or enlist the help of a professional, make sure your brakes are always in top condition for a smooth and safe ride.