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Unior · Bottom bracket tool
The classic cartridge bottom bracket socket, done properly.
$34.95
PriceIn stock, ready to ship
Unior's 20-tooth socket for fitting and removing Shimano and ISIS cartridge bottom brackets. Hardened carbon steel, a 1/2 inch square drive and a lifetime warranty.
Sold by Ashburton Cycles
Verified store
Price
$34.95
Splines
20
Drive
1/2 inch square
Material
Premium flex plus carbon steel
The Unior 1671.1/4 is the 20-tooth socket that fits the splined cups of Shimano cartridge (square taper and Octalink) and ISIS bottom brackets. If your bike has an internal cartridge bottom bracket rather than outboard bearings, this is the tool that turns it.
It is made from premium flex plus carbon steel in Slovenia and weighs 112 g. Drive it with a 1/2 inch ratchet or breaker bar for stubborn cups, or a torque wrench when fitting.
It will not fit Hollowtech II or other external 16-notch cups, so count the splines in your cup before you start.
Home mechanics and workshops servicing bikes with cartridge bottom brackets.
20-tooth spline
Fits Shimano cartridge, Octalink and ISIS cups.
1/2 inch drive
Use a ratchet, breaker bar or torque wrench.
Hardened carbon steel
Built for workshop use and backed by a lifetime warranty.
Made in Slovenia
From Unior's toolmaking home in Zrece.
Every detail as listed by the manufacturer.
Unior has been making hand tools in Zrece, Slovenia since 1919. Its bike tools line is used in professional workshops around the world and sponsors pro road and mountain bike teams.
Unior · Bottom bracket tool
The classic cartridge bottom bracket socket, done properly.
$34.95
In stockSplines
20
Drive
1/2 inch square
Material
Premium flex plus carbon steel
Weight
112 g
Unior's 20-tooth socket for fitting and removing Shimano and ISIS cartridge bottom brackets. Hardened carbon steel, a 1/2 inch square drive and a lifetime warranty.
The Unior 1671.1/4 is the 20-tooth socket that fits the splined cups of Shimano cartridge (square taper and Octalink) and ISIS bottom brackets. If your bike has an internal cartridge bottom bracket rather than outboard bearings, this is the tool that turns it.
It is made from premium flex plus carbon steel in Slovenia and weighs 112 g. Drive it with a 1/2 inch ratchet or breaker bar for stubborn cups, or a torque wrench when fitting.
It will not fit Hollowtech II or other external 16-notch cups, so count the splines in your cup before you start.
Home mechanics and workshops servicing bikes with cartridge bottom brackets.
20-tooth spline
Fits Shimano cartridge, Octalink and ISIS cups.
1/2 inch drive
Use a ratchet, breaker bar or torque wrench.
Hardened carbon steel
Built for workshop use and backed by a lifetime warranty.
Made in Slovenia
From Unior's toolmaking home in Zrece.