Hi,

I've got a 2004 Trek 800 beater which has been in my garage for two years now - I moved across the country and the movers somehow lost the seat and post. I've tried a couple replacements - I thought 27.2 was the correct size (too small), then 30.9, which was too big.

I tried to ask the LBS - a Trek dealer - for this bit of information and they said I'd need to bring the bike in and have check the size with a micrometer. Maybe I was wrong or am missing something here, but I can't believe that they'd have manufactured similar frames requiring different seat posts during the same model year. Aside from that, said LBS is ~30 miles from my house, they were a touch snotty, and I don't feel much like paying them for this service now. Anyone have the correct info?

Thanks,
Andy