A tiny racebike with big performance, the Yamaha TZ125 was a pure racebike and should not be confused with the TZR series of sportbikes. Handling was thought to be on par with the Honda RS125 but the Yamaha was down slightly on power compared to its rival. At 56mm x 50.7mm bore and stroke, it was oversquare, compared to the slightly underquare Honda, and featured Yamaha's "YPVS" to boost power. That little two-stroke single was backed by a six-speed gearbox with a dry clutch for extra lightness and improved rattle-osity. The owner's manual claims 180lb with oil and a full tank of fuel which means you may not need a ramp to unload your bike at the track if you work out regularly...
The listing for this particular bike is very... um brief and doesn't mention any spares, but several photos of parts are included, so I guess you can always email the seller if you want to know exactly what is included... Even if you're very familiar with the TZ125, some idea of what you're getting here would be a very good idea for the seller, especially since these are racebikes that need regular maintenance to keep them running and gearing/jetting changes to perform at their peak.
From the original eBay listing: 1994 Yamaha TZ125 for Sale
No title, no bill of sale, GP 125 for track, spares for a couple of seasons, ready to race. If you don't know what you're looking at. Don't waste our time. This is not a TZR our some sort of race rep. See pics.
The price seems reasonable at $6,000 considering what folks have been asking for other TZ125s but, perhaps as a result of the lack of details, interest in this machine has been pretty limited up until now, with just about 24 hours left on the auction.