1974 Yamaha TZ350B Racing Motorcycle (see text) Frame no. 383-991066 Engine no. unstamped

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Lot 695N
1974 Yamaha TZ350B Racing Motorcycle (see text)
Frame no. 383-991066 Engine no. unstamped

Sold for £ 6,900 (US$ 8,896) inc. premium
1974 Yamaha TZ350B Racing Motorcycle (see text)
Frame no. 383-991066
Engine no. unstamped
The mainstay of 250cc and 350cc class racing at national and international level for many years, the twin-cylinder two-stroke Yamaha well deserved the title of 'privateer's friend'. Following its successful adoption for the 1972 works twins, water cooling first appeared on Yamaha's over-the-counter racers with the introduction of the TZ range in 1973. Power output increased only marginally over that of the preceding air-cooled TD/TR models, but reliability was much improved. Over the succeeding decade the TZ engine was updated with reed-valve induction, exhaust power valves, separate cylinders and a backwards-rotating crankshaft, but the layout always remained that of a parallel twin. On the chassis side, discs replaced the original drum brakes, a 'lowboy' frame was introduced, and an aluminium swinging arm adopted. With Yamaha concentrating their resources on developing their 500 Grand Prix bike and the new TZ750, the smaller TZs remained unchanged through 1974 (TZ250/350B) and 1975 (TZ250/350C). From the mid-1980s onwards, a succession of more radical changes would see the TZ fundamentally altered. This beautiful TZ350B had already been restored when it was purchased by the Museum. It should be noted that the crankcases are unstamped apart from the (correct) 'R5' prefix, indicating that they were supplied new as spares. It should also be noted that it the engine believed to be of 250cc capacity. There are no documents with this Lot.

Footnotes

  • As with all Lots in the Sale, this Lot is sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.

Saleroom notices

  • The engine number prefix is R5. This machine is believed to comprise a TZ350B frame, believed to be fitted with an air cooled TD3 engine. Please click the link to view the walkaround video of Lot 695: click here
Contacts
1974 Yamaha TZ350B Racing Motorcycle (see text) Frame no. 383-991066 Engine no. unstamped
1974 Yamaha TZ350B Racing Motorcycle (see text) Frame no. 383-991066 Engine no. unstamped
Auction information

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Buyers' Premium and Charges

For Motorcycles (Lots 301-703) the Buyer's Premium will be 15% on the first £500,000 of the Hammer Price of each Lot, and 12% on the balance thereafter, VAT at the standard rate is payable on the Premium by all Buyers, unless otherwise stated.

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N NOVA declaration

If purchased by a UK resident, this machine is subject to a NOVA declaration, undertaken by Bonhams upon a successful sale, to facilitate the registration of the machine here in the UK.