Trek frame serial numbers SNs are typically stamped into the bottom of the bottom bracket shell. In the case of some early 80s Treks, the number is under the plastic cable guide on the bottom of the shell. Just remove the plastic cable guide to see the number. The other place Trek or their subcontractors stamped the SN is at the lower end of the seat tube. Note: The SN on your original sales receipt may not match the one on your bike. Sales persons sometimes had difficulty reading the numbers.
I recently bought this 90's Trek Carbon. It is an absolute stunner for its age. : bicycling
Trek today announced updates for its Crockett aluminum cyclocross bikes. Geometry is carried over from previous Crockett models, as are the full-carbon forks that are also shared with the carbon fiber Boone. But what is absolutely brand-new — and a groundbreaking moment for Trek — is the inclusion of T47 threaded and oversized bottom bracket shells, just as we predicted a few weeks ago. The new Trek Crockett models look better than before with sleeker welds and cleaner lines, and the frames are also about g lighter, too.
Trek confirms use of T47 threaded bottom brackets — but with a twist
Filter By: Availability. Not Designated Model Year. Bottom Brackets. Striking the balance between light weight, long life and durability, TruVativ's Giga Pipe Team SL Bottom Bracket uses 3 sealed cartridge bearings to provide smooth pedaling season after season.