Welcome to Old World Bikes

We specialize in vintage Triumph, BSA, and Norton motorcycles. We take pride in old world craftsmanship offering a full range of services; repair, rebuild and restoration, and parts; NOS, reproduction and often hard to find used items.. 

Our Web store is up and running so you can order parts on-line at:  store.oldworldbikes.com. 

You can subscribe to our blog and "Dave's Corner" (see above and sign up below) to keep up on what we are doing in the shop. And you can follow us on facebook at:
https://www.facebook.com/oldworldbikesltd

We haven't gotten all our parts into the Web store yet, but we are adding more each week.  If you don't see the part you are looking for give us a call at 720-509-9293.

Visit our contact us page for more information. And, you can see some pictures from recent projects at the end of this page.

See What's Going On

Some of Our Recent Projects

Our Shop

Our shop is open Monday - Saturday. We are located right at the foot of the Rocky Mountains in Golden, CO. Our hours:
Mon-Thurs: 10:00am - 5:00 pm
Fri - Sat :      10:00am - 2:00 pm.

Old World Bikes Ltd.
13200 W. 43rd Drive, #204
Golden CO 80403
(720) 509-9293
info@oldworldbikes.com

Triumph & BSA Part Numbers

Triumph Part Number Conversion

In 1973 Triumph introduced a numerical part numbering system which superseded the old alpha-numeric system. For these earlier models the following information will help to find the new number. Prefix letters have been converted to numeric prefixes, as shown in the table below. We use a plain dash - to separate part number fields. 

OLD TO NEW NUMBERS                                 EXAMPLES::
Dxxxx converts to 60-xxxx                               D4250   becomes 60-4250
Exxxx converts to 70-xxxx                               E4576   becomes 70-4576
Exxxx converts to 71-xxxx                                E12599 becomes 71-2599
Fxxxx converts to 82-xxxx                               F9356   becomes 82-9356
Fxxxx converts to 83-xxxx                               F13245  becomes 83-3245
Hxxxx converts to 97-xxxx                              H2091   becomes 97-2091
Sxxxx converts to 21-xxxx                               S413       becomes 21-0413
Txxxx converts to 57-xxxx                              T1435     becomes 57-1435
Wxxxx converts to 37-xxxx                             W354    becomes 37-0354

BSA Part Number Conversion: 

From the mid 1960's on, BSA adopted a standard numbering sequence which follows the pattern of 2 digits, a dash, then 4 digits, e.g. 71-2790. Prior to this BSA used two other part number formats, the early system used less than six digits so converting to the news system, zero's to added. The later system preceded the original number with additional codes. To convert these to the new system, only the last six digits are used. Here are some examples.

Numbers less than 6 digits:
2-2582 becomes    02-2582
15-152   becomes   15-0152
2-79      becomes    02-0079    
     
Numbers more than 6 digits:     
11642-2631 becomes 42-2631