T47/73 Bottom Bracket for Shimano MTB

Marsoni

M251S

$4249.50

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

T47/73 Bottom Bracket for Shimano MTBT47 is a standard created by custom frame builders. Its threaded, has an inner diameter of 47mm, and is 73mm wide. It has the design benefits of being oversized and wide, but also the practical benefits of threads. The cups have CeramicSpeed bearings pressed in. The Coated Bearing has CeramicSpeed balls running on a 3 micron thick coating placed on top of hardened steel races for greater durability and less friction. This BB is compatible with 73mm

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Great price. It does what it's supposed to do. Keeps my air flow clean. Super easy to install, I can't believe mechanics charge to do this. Once you see how easy it is, you'll save yourself that expense. The material is top-quality charcoal, so it cleans all the nasty mold particles from getting into the vehicle. There is no smell, and that is a plus.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 1, 2026

Verified Purchase

Nette Brown

Lexington, US

★★★★★ 5

Perfect fit

Perfect fit and good construction

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Reviewed in the United States on May 25, 2026

Verified Purchase

Ashley Jordan