Bottom Brack Option - How to determine?
I have a 2017 GT Karakoram that I want to convert with CYC Photon.
The order form asks for the BB Option but I don't know how to determine what I need.
The product spec only lists these relavent details...
Crank: SR Suntour XCM-T414, 44/32/22T
Bottom Bracket: Tange Sealed
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I received a response from GT directly that confirmed the 'shell length' of the BB is 68mm on the 2017 GT Karakoram.