Trek 8000 frame size serial WTU 8120289 T - Trek Cycling

Not that important except for selling the bike, but if you really need to know then Google "Trek serial number" or "Trek 8000". Not possible to ID with just serial number. For more info see my T How to determine the year value etc of your bicycle

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Contact trekbicycle:

https://www.trekbicyclesuperstore.com/product-list/bike-parts-1051/

https://www.trekbicyclesuperstore.com/sitesearch.cfm?search=820&goSiteSearch.x=11&goSiteSearch.y=8

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San Diego, CA
(858) 974-8735
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8495 Fletcher Parkway
La Mesa, CA
(619) 668-8787
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1617 Capalina Road Unit B
San Marcos, CA
(760) 599-9735
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Chula Vista, CA
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211 N. Hwy 101
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5000 Menaul Blvd, NE
Suite A
Albuquerque, NM
(505) 312-7243
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This is from the
Trek Aluminum Series 420 The model is TBI 0405.
Nice bicycle, but I wish they had included a chain guard as standard.
They were gray paint with a red TREK logo on the drop tube in the original finish.

most likely a trek. Google Trek serial numbers for more info.

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

This is from the
Trek Aluminum Series 420 The model is TBI 0405.
Nice bicycle, but I wish they had included a chain guard as standard.
They were gray paint with a red TREK logo on the drop tube in the original finish.

There is no "code". Trek stopped a coding process about 4 years ago. If you give me the serial number, starts with "wtu" I can tell you what year it is. I will have to wait until the trek dealer site is back up from maintenance. I work at a bike shop that sells almost exclusively Treks.

Try Trek.com, under customer service. IF you have a Trek bike shop in the area, they can be a big help

your best bet is to take it to a Gary Fisher or Trek dealer (Trek owns Gary Fisher, Bontrager and Klien) They should be able to quickly tell you what year it is.

Chain link will be determined by frame size, as wheel base is longer with a larger frame and how long the rear derailleur cage is. Chains come in a standard 119 link length intended to be cut to size. There is no way to lookup the chain length. I would recommend taking it to your local bike shop (lbs) and having them install it.

You have to use a different fork. There are three standard steering tube sizes: 1"; 1.125"; 1.5". The 1" is found on budget bikes, older bikes and some cruiser/hybrid bikes. 1.125" is the most common size and is also usable on 1.5" head tubed bikes using reducing headsets. 1.5" is found on heavy-duty mountain bikes and some carbon fiber road bikes, although its use is increasing in popularity.
The point is, you can sometimes convert down, but never up. You have to source a different fork.

Sorry, mate
matthew