Cassette Lockring Tool Park Tool FR-5.2G with 5 mm Guide Pin

Cassette Lockring Tool Park Tool FR-5.2G with 5 mm Guide Pin

Park Tool FR-5.2G is a professional, durable cassette lockring tool designed for installing and removing bicycle cassette lockrings and compatible Center Lock disc brake rotor lockrings. Based on the proven FR-5.2 design, this version features an integrated 5 mm guide pin that helps centre and stabilise the tool when working with quick-release hubs.

The tool is compatible with 12-spline lockrings commonly found on 7–12-speed cassettes, including models from Shimano, SRAM, SunRace, SunTour and Chris King. It also fits Shimano and other compatible disc brake rotor lockrings and adapters featuring 12 internal splines. The supported fitting has an approximate outer diameter of 23.4 mm.

Its thin-wall construction allows the tool to be used without removing hub cones or locknuts, making maintenance more convenient. The 1" (25.4 mm) hexagonal base can be operated using a suitable socket, wrench or bench vise, offering versatility for both home mechanics and professional workshops.

Manufactured from heat-treated alloy tool steel, the FR-5.2G provides excellent strength, wear resistance and long-lasting durability, even with frequent workshop use.

Technical specifications:

• Manufacturer: Park Tool
• Model: FR-5.2G
• Type: Cassette and disc brake lockring tool
• Cassette compatibility: Compatible 7–12-speed cassette lockrings
• Brand compatibility: Shimano, SRAM (including 1x), SunRace, SunTour, Chris King and others
• Disc brake compatibility: Lockrings and adapters with 12 internal splines
• Tool fitting: 12 splines
• Fitting outer diameter: Approximately 23.4 mm
• Guide pin: 5 mm, for quick-release hubs
• Hexagonal base: 1" (25.4 mm)
• Material: Heat-treated alloy tool steel
• Construction: Thin-wall design