RC-R31 is specified as a rear hub with an M5 quick-release design, making it suitable for road bike applications. The provided content also states that it is compatible with Shimano 8–11 speed cassette systems, allowing integration with a wide range of entry-level to mid-range drivetrains. In addition, the cassette body is specified as CRMO material. These supplied points define the main structure of the product page and establish the key compatibility language that should be used consistently throughout the description, the specification table, and related on-page SEO elements.

According to the provided installation guidance, RC-R31 has an OLD (Over Locknut Dimension) of 130mm, which fits standard road bike frame spacing. Installation requires an M5 quick-release skewer to securely mount the hub onto the frame. The source text also states that the hub is built with two standard bearings, providing a simple yet stable structure that helps ensure smooth rolling performance while keeping maintenance relatively easy. Because this product page is written to stay 100% aligned with the supplied information, it does not add unprovided details such as disc interface type, hub shell material, spoke count, flange geometry, or exact weight.

Product Features & Benefits

• Rear hub with M5 quick-release design for road bike applications (as provided).
• Compatible with Shimano 8–11 speed cassette systems (as provided).
• CRMO cassette body (as provided).
• 130mm OLD for standard road bike frame spacing (as provided).
• Built with two standard bearings for a simple and stable structure (as provided).

Applications

• Road bike applications.
• Entry-level to mid-range drivetrain integration.
• Complete bike builds or replacement use.

Installation Guide / Recommendations

• Confirm compatibility with a road bike frame using 130mm spacing.
• Install the cassette onto the hub body before securing the wheel.
• Secure the wheel using an M5 quick-release skewer.
• Regularly inspect the bearings and fastening components to maintain riding safety and performance.