BB90 Bottom Bracket for Trek Shimano

Marsoni

M251S

$3849.50

Get it in 3 business days with 1 day shipping. Friday, May 29

BB90 Bottom Bracket for Trek ShimanoBB90 is the Trek oversized bottom bracket standard and is only found on Trek road bikes. The shell is 90. 5mm wide and is designed to work with 24mm spindles and road cranks and have the bearings inside the shell. The CeramicSpeed Bearings come as two bearings, which are then pressed into the frame. Those two bearings consist of either CeramicSpeed Standard or Coated Bearings. Both feature super smooth, super round CeramicSpeed Balls contained in

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This thing comfortably fits my 16” MacBook Pro. It does tilt a bit probably due to me screwing it to the underside of my wooden desk which probably isn’t the exact use for it, but it holds really strong and isn’t going anywhere. Combining this with a small USB-C hub for some USB As and and extra HDMI and a little bit of Velcro, this holder makes for a pretty solid option to hide you laptop away if you a surprisingly clean desktop-like experience, even if you’re on a budget and can’t afford a desktop. A proper thunderbolt docking station would go a long way with this as well.

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Reviewed in the United States on March 16, 2026

Verified Purchase

JJD

Louisville, US

★★★★★ 4

Works as advertised

Color: Black

Functions as described. Looks good. Laptop fits in loosely. I’d prefer a more snug fit. Other than that, works as advertised.

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Reviewed in the United States on March 19, 2026