The Shimano SM-RT64 [paid link] disc brake rotor is a popular choice for road cyclists looking to enhance their braking performance. As with any component, upgrading your disc brake system can improve your ride, whether you’re looking for more stopping power, better modulation, or increased durability. In this article, we will explore whether you can upgrade your Shimano SM-RT64 [paid link] disc brakes, how to choose the right upgrade components, and the best practices to follow to ensure compatibility and maximize performance.
Understanding Shimano SM-RT64 Disc Brakes
The Shimano SM-RT64 [paid link] is a center-lock disc brake rotor designed for use with Shimano’s road bike hydraulic and mechanical brake systems. Its construction, which includes an aluminum core sandwiched between stainless steel layers, offers a good balance of weight savings and heat dissipation. The SM-RT64 rotor is known for its smooth braking performance and is commonly found in mid-range road bike setups. However, as with any bike component, upgrading it can help you achieve better overall performance or address specific needs.
Can You Upgrade the Shimano SM-RT64 Disc Brakes?
Yes, you can upgrade your Shimano SM-RT64 disc brakes, but the feasibility and benefits of such an upgrade depend on several factors, including your bike’s compatibility, the type of riding you do, and your specific performance goals.
Key Considerations Before Upgrading
- Rotor Size Compatibility
The Shimano SM-RT64 comes in various sizes, including 140mm, 160mm, 180mm, and 203mm. When considering an upgrade, it’s crucial to check your bike’s frame and fork for compatibility with different rotor sizes. Larger rotors can offer better braking power and heat dissipation, making them ideal for heavier riders, longer descents, or more aggressive riding styles. However, upgrading to a larger rotor may require modifications, such as changing the adapter or the brake caliper, especially if your current setup uses smaller rotors. - Brake Caliper Compatibility
Your brake calipers must be compatible with the rotor size you plan to use. Shimano’s hydraulic disc brake calipers, like the BR-RS785 or BR-RS505, are designed to work with the SM-RT64 rotor. However, if you decide to upgrade to a larger rotor, you might need to switch to a caliper that can accommodate the larger size. For instance, some calipers are only designed for smaller rotors (140mm to 160mm), while others can support larger sizes (180mm to 203mm). Always ensure that your caliper can handle the size of the rotor you are considering. - Hub Compatibility
Shimano SM-RT64 rotors use the center-lock mounting system, which is compatible with Shimano hubs that feature the center-lock interface. Before upgrading, verify that your hub has a center-lock system, as other mounting systems like 6-bolt hubs will require a different rotor.
Choosing the Right Upgrade for Shimano SM-RT64
When upgrading your Shimano SM-RT64 disc brakes, there are a few options to consider that can help you achieve your performance goals.
- Rotor Material
If you’re looking to improve heat management or durability, you can consider upgrading to rotors made from materials such as Shimano’s Ice Tech. These rotors use a three-layer construction (steel-aluminum-steel) that provides improved heat dissipation, reducing brake fade during long descents or aggressive riding. If you ride in hot conditions or do a lot of mountain or downhill riding, switching to Ice Tech rotors can enhance your braking performance. - Larger Rotor Sizes
As mentioned earlier, upgrading to a larger rotor can provide increased braking power, especially for riders who need stronger stopping force during fast descents or in hilly terrain. If your bike can accommodate larger rotors, upgrading from a 160mm to a 180mm rotor (or even a 203mm rotor, depending on your bike’s compatibility) can be a significant improvement. - Aftermarket Rotor Upgrades
Some riders may choose to upgrade to higher-end rotors from brands such as SwissStop, Ashima, or Galfer. These aftermarket rotors often feature unique designs or materials that claim to offer better heat dissipation, reduced brake noise, or longer durability. However, it’s important to ensure that the rotor is compatible with your brake system before purchasing.
Best Practices for Upgrading Shimano SM-RT64 Disc Brakes
- Ensure Proper Rotor and Caliper Alignment
One of the key considerations when upgrading your Shimano SM-RT64 disc brakes is ensuring that your rotor and caliper are properly aligned. Misalignment can lead to uneven pad wear, poor braking performance, and unnecessary noise. Take the time to adjust the caliper’s position using the caliper mount bolts to ensure even pad contact with the rotor. - Use the Correct Adapter
If you’re upgrading to a larger rotor, you may need to change or add an adapter. Adapters are available for converting between different rotor sizes (e.g., from 160mm to 180mm). Make sure to select the correct adapter for your brake caliper and bike frame, as the wrong adapter can lead to poor brake performance or damage to your components. - Regular Maintenance
After upgrading your disc brake system, ensure that you maintain the components regularly. This includes checking rotor wear, pad life, and brake fluid levels (if you have hydraulic brakes). Regular maintenance will help prevent issues such as rotor warping, poor brake modulation, and reduced braking power. - Brake Pads
Consider upgrading to premium brake pads if you are switching to larger rotors or more advanced rotor materials. Shimano’s compatible pads for the SM-RT64, like the Shimano B01S, provide solid braking performance. If you’re upgrading to Ice Tech rotors, using corresponding Ice Tech pads will maximize the rotor’s heat dissipation benefits. - Test Your Brakes Before Riding
After installing or upgrading your disc brakes, always test the system in a controlled environment before heading out on the road. Check the brake feel, response, and any noise issues. Ensure that there are no signs of rubbing or dragging, which can impact performance and cause premature wear.
Conclusion
Upgrading your Shimano SM-RT64 disc brakes can enhance your braking performance, but it’s essential to choose the right components and ensure compatibility with your bike’s frame, calipers, and hubs. Whether you’re looking for more stopping power, better heat dissipation, or longer-lasting performance, following the best practices and choosing quality upgrades will help you get the most out of your Shimano SM-RT64 disc brake system. With the right modifications, you can achieve a smoother, more reliable braking experience on every ride.