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Gear Talk / Drivetrain spare parts for a long tour

« on: September 25, 2020, 07:38:31 pm »

Hello
I'm planning my "around the word" tour.
The first (and wildest) part will be about 12000 km before I get from Europe to Bangkok/Kuala Lumpur where I'll be able to buy/order quality components.

Currently I have the following drivetrain setup:

Crankset: Shimano Deore FC-T6010 (Hollowtech 2, all aluminium)
BB: Shimano XTR SM-BB93
Rear derailleur: Shimano Deore RD-M6000
Cassette: Shimano Deore CS-HG50-10
Chain: Shimano Ultegra CN-6701

As you can see, I was fooled by Shimano marketeners. Instead of using old good 3X9 Alivio, I decided to try something new.

My biggest fear is BB. Will it last for at least 12000 km or take a spare BB?
Chains. Suppose one chain lives for 2-3000 km, so I need up to 6 pieces, right? And one more cassette? I'll use paraffin as a lube
Chainrings. They're made of aluminium. I was told aluminum chainrings will die in 7-9000 km. Do I need a spare ring?

Thanks!