Petra Cycles stock most Shimano spares, including the parts you're looking for.
Order place.
Thank you. Why all bike shops don't stock these, I don't know. They are vital for making sure bikes are comfy.
Shimano I believe have slightly reduced the reach of their levers so the demand for these Shims is less that it was, it did seem far more a problem a couple of years ago that it does now that's for sure, mind you I can't find any data to confirm that the lever reach had been reduced slighlty! Shimano are also introducing
built in reach adjuster on the 2009 Dura Ace, plus some of the lower groups appear to now come supplied with
shims to reduce reach, although expect that to be on aftermarket levers and perhaps not when supplied on a complete bike. The built in reach adjuster of the Dura Ace seems far better, I would expect that as normal the features of the higher groups to filter down to lower groups in due course.
As well as Shimano,
Specialized also have some of their own shims, although like the Shimano version were seldom available in the lever option that the customer actually needed when I tried to get some in!
Note that there are some bars on the market that help reduce the reach, popular with ladies specific bikes in particular.
Paul_Smith