Unior 1670.3/4 Freewheel Removal Tool for SunTour

The Unior 1670.3/4 SunTour 4-pin freewheel remover removes vintage freewheels from the hub. Ideal for anyone restoring or maintaining bikes from the '70s to the early '90s.

• Removes 4-pin SunTour freewheels from the '70s to the early '90s
• Also works on some Sachs / Sachs-Maillard freewheels with the same 4-pin pattern
• Use with a 1/2" ratchet or a lever bar on the 24 mm spanner fitting
• Steel with trivalent chrome plating ISO 1456:2009, weighing just 42 g
• Not suitable for 2-pin SunTour, Shimano-type or BMX freewheels: check the pins first

Technical specifications

• Item code (MPN): 1670.3/4
• EAN/GTIN: 3838909160641
• Compatibility: 4-pin SunTour freewheels (catalogue from the '70s to the early '90s); some Sachs / Sachs-Maillard freewheels with the same 4-pin pattern
• Not suitable for: 2-pin SunTour, Shimano-type or BMX freewheels
• Internal distance between pins: 19.9 mm
• External distance between pins: 23.9 mm
• Finish: Trivalent chrome plating to ISO 1456:2009
• Material: Steel
• Weight: 42 g
• Colour / size: Black / One size

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.