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  1. Drivetrain
    Please help, I can't seem to understand dub crank/bb compatibility. The frame has 83mm PF30 bb (Cannondale scalpel SE 2021 ai boost 55mm chainline). All the ai cranks I see either don't state axle/bb/hub compatibility or state 73mm/89.5mm/91.5mm bb shell width. Some state 148mm hub but miss on...
  2. Drivetrain
    Why some botom bracket have center sleeves, and others don't? I'm looking for BSA - DUB bottom bracket and so far the Sram ones have this centar sleeve, but many after market ones don't. Any pros and cons between the two styles?
  3. Wanted
    I'm looking for a set of SRAM Eagle crank arms (DUB BB compatible) if anyone happens to have a set available. They can be any of the following: X1 1000 Eagle - 155mm or 165mm SX Eagle - 155mm or 165mm NX Eagle - 165mm GX Eagle - 165mm Since these are for a shorter rider, the 155mm length is...
  4. Drivetrain
    Hello everybody, I own Trek Roscoe 7 2020 and I decided to change the Powerspline for the DUB bottom bracket. I know I need the 68/73mm DUB bottom and new DUB crankset. But do I need the boost version of the crankset or standard? The standard or superboost+ DUB bottom bracket? I also want to...
  5. Misc Components
    At the end of the day, the goal is not calling to the components but the ride itself. Few areas of mountain biking are as confusing and contentious as the bottom bracket landscape. Many standards have been invented. Problems and mass confusion ensued. So it is worth digging deeper into the...
  6. General Discussion
    There are few headaches in the bike world like the current bottom bracket landscape. SRAM aims to unify the current sea of standards with one system without introducing a new shell standard. It is a lofty goal indeed but one worth pursuing. It seems that building up a bike these days is fun...
  7. My 20

    Old Mongoose 20", traded for MTB frame. Good trade! Look for upgrades soon!
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