Originally Posted by
Criag Harris
I have a old Trek 930 Single Track which is about 15 yrs old. I have rebuilt the bottom bracket cassette several times. I now need to replace it. It is a Shimano BB-CS20-68x122.5 with a left side c.w. thread. All the Shamano BB cassettes I have seem on the internet are right side thread. Which model should I be looking for? I live in Northern India so there is no bike store just down the road. I have to order parts from Canada and wait for what I hope is the right part. Can anyone help me
Hi Craig _ any references I`ve found to a Shimano BB CS20 indicate its an older Octalink bottom bracket and since its a road bike - probably a V1 version. There is definately a drive side and a non-drive side.
V2 versions are more common and were introduced later and found mostly on mtb bikes.
Have actually located a few shops in England that have that actual model in stock. It lists for less than 15 pounds sterling. Is there a reason you can`t order from there?