Although the RD400 was certainly popular with racers of the day, Yamaha’s track-only TZ350 was a definite step up in terms of performance, with water-cooling added to the engine to increase performance significantly. While the TZ bikes had certain general characteristics in common with their streetable cousins: two-stroke parallel-twin engines, twin-shock suspensions, they were pure, over-the-counter racing machines. And they were priced to sell: combined with the performance you’d expect of a track-ready racebike, the TZ250 and 350 were a dominant force in period roadracing.
The 349cc, water-cooled two-stroke put out 60bhp and was matched to a 6-speed gearbox. Combined with a dry weight of just 250lbs, the TZ had impressive performance. Early bikes used a conventional twin-shock rear suspension and drum brakes, but the bikes continued to evolve throughout their production run. The later “C” models bikes, as seen here, used a monoshock rear for improved roadholding.
Although the listing shows the bike as being in Portland, Oregon, the body of the listing clearly states that this machine currently resides in New Zealand, so anyone considering a purchase should start calculating shipping, taxes, duties, and whatever other headaches might be involved…
From the original eBay listing: 1976 Yamaha TZ350C for Sale
The “C” model, of 1976 was another matter entirely. Here was a radical departure chassis and running gear wise from the earlier TZ’s. Adjustable “mono-shock” (spring preload and rebound damping only) rear suspension, combined with twin piston front and rear disk brakes set the world on fire, with the new bikes selling like hot-cakes from Yamaha dealers worldwide. The retail price of around £ 1,550 including a comprehensive spares kit was incredible value for money and did no harm at all to sales. The clutch basket “boss” was improved by changing it’s method of attachment to a male / female spline system from the previous model’s “dog” type. The exhaust header picked up an additional o-ring and a new mounting system. Power jumped up slightly to 62bhp @ 10,000rpm.
NOTE: This Motorcycle is “Not” located in the USA it is located in New Zealand and can be shipped world-wide. Allow and additional $1200USD minimum for most countries. Exact shipping price will be by quotation.
This bike looks extremely clean, although no mention is made of its running condition: the tires look basically brand new, so it’s a bit hard to tell if it’s set up for display or as a runner. With an opening bid of $12,500 and no takers as yet it’s not the first time we’ve posted one of these and seen a relative lack of interest. This one’s a bit more expensive than previous examples as well, which is a shame considering the condition and potential performance available for vintage racing enthusiasts.
Here in the US, where this bike most explicitly isn’t, the TZ350 was a bike with nowhere to call home: there were classes for 250 and 500cc machines, but the 350 ended up having to run in bigger classes where it was at a distinct disadvantage in terms of power. These days, things may be different and organizations like AHRMA may give the bike more of an opportunity to shine, but limited appeal at the time makes these exceedingly rare here.