exhaust engraving?

[CODY_M11]

i was polishing my lrd pipe and found this engraved on the tab. just curious if ne 1 would know or could tell me what this means? if anything?

thanks,
cody

[CODY_M11]

it says DB
250B
580

[deathman53]

the 250b is very easy to tell, its a 250b pipe. The 580 could mean a specific rider/racer it was designed for or it might just be a production number. Thats my best guess. I will look at my 250b pipes and see if they have anything engraved in them.

[woodsracer144]

when you say 250b, do they have a different set up 250 I.E. a c? i know the big bores are 350BB pipes and the exhaust on the sic. is 1 1/4? i think... i have one i just have to check it out...