Very nice AMP! Are those still being built?

No, they stopped production about two years ago, although as you pointed out they did make some Mercedes branded bikes, but I believe those are also no longer in production.

Parts and service are still available from Amp Research in California. Last year they replaced my complete rear triangle under the lifetime frame warranty when one of the dropouts separated from the carbon fiber seat stay. I had to stop every quarter mile (the tire would rub on the chain stay) and bang the dropout back into place with a rock. Fortunately I was only about five miles from my car. The new triangle has an improved attachment method, adding a rivet to the glue joint.

They also rebuilt my brake calipers and front shocks, and replaced the link pins and bushings in the rear suspension and front fork, all for about $200.

tanstaafl.