Unior 1670.9/4 Cassette Lockring Tool with 12 mm Guide Pin

The Unior 1670.9/4 cassette lockring remover is used to remove and refit the cassette lockring on hubs with a 12 mm thru-axle. It is designed for anyone maintaining bikes at home or in a workshop.

• Fits hubs with a 12 mm thru-axle thanks to the central guide
• Suitable for Shimano HG 7- to 12-speed cassettes and SRAM XD and XDR
• Hardened tool steel withstands the force needed to unscrew the lockring
• For use with a 1/2" torque wrench or ratchet, or an adjustable spanner
• Not suitable for Campagnolo or 15 mm or 20 mm hubs

Technical specifications

• Model (MPN): 1670.9/4
• Material: Hardened tool steel
• Overall length: 75 mm
• Weight: 122 g
• Hexagonal flange: 21 mm
• Drive: 1/2" square drive on the side opposite the flange
• Central guide: 12 mm
• Cassette compatibility: Shimano HG 7- to 12-speed; SRAM HG including XD and XDR; Microshift and Sunrace with Shimano HG lockring pattern
• Hub compatibility: 12 mm thru-axle (not compatible with 15 mm or 20 mm)
• Not compatible: Campagnolo
• Use: With a 1/2" torque wrench or ratchet, or an adjustable spanner on the flats; a cassette holding tool is required (e.g. chain whip)

Unior was founded in 1919 in Zreče, in present-day Slovenia, where it is still based. For bicycle care, it makes tools, repair stands and wheel equipment. Its name, adopted in the 1970s, comes from the expression “universal tools” and reflects its roots in metalworking.