slewfoot

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

robhunterx

This web site specs it at 27.2!!!!!!! at least in 1999 anyway.
https://www.epinions.com/bike-Bicycle...ay_~full_specs

Maybe it got bent or egged to one side in the moving process.
Good luck!!!!!!

cs1

My son has an old Trek MTB that used an oddball 29.4 size that Trek used for only a few years. You can only get it from Kalloy. They cost less than $20. I found one in stock at Eddy's Bike Shop in Stow OH.

Tim

slewfoot

Thanks a ton. I've got a 29.4 on ordered, will advise how that works.

Regards,
Andy

oilman_15106

Hope you actually measured it. There are 40! different seatpost sizes. Call your LBS & see if they have a seatpost size device. You stick it down the tube and read to the size that works.