Bottom bracket size for Kona Hei Hei

[Yeti7cje]

I’m away from my Kona Hei Hei 1991 and need to get a new bottom bracket, problem is I don’t know what size I need. Can someone point me in the correct direction?

 

[Takingabreak]

it's a 68mm shell but the axle length will depend on which cranks you are using

 

[Yeti7cje]

Great, the cranks are xt 732, does that tell you enough to suggest a length. Appreciate the advise

 

[konacarl]

122.5mm?

 

[Yeti7cje]

I wasn’t expecting that, UN71 is 107mm and UN72 is 110mm.

 

[konacarl]

Sheldon brown said its 122.5 if its m730

 

[Woz]

I wasn’t expecting that, UN71 is 107mm and UN72 is 110mm.

No. UN7x is a series - not an axle size.

 

[Yeti7cje]

Sheldon brown said its 122.5 if its m730
View attachment 863474

Thanks that’s great

 

[Yeti7cje]

No. UN7x is a series - not an axle size.

Ok some good learning tonight

 

[Woz]

Ok some good learning tonight

- grab your preferred drink and mull over this. UN7x was Ultegra / XT grade, and the last in the series was UN73.