c.1986 Yamaha TZ250S Racing Motorcycle
c.1986 Yamaha TZ250S Racing Motorcycle
Frame no. 1RK-000188
Engine no. 1RK-000188
The mainstay of 250cc 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 remained the same as 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. From the mid-1980s onwards, a succession of more radical changes would see the TZ fundamentally altered.
Offered here is an example of the new-for-1986 TZ250S, which for the first time featured Yamaha's Deltabox aluminium twin-spar frame and rising-rate rear suspension. Little had changed inside the engine apart from the switch to six-petal reed valves, up from the preceding four. Nothing is known of the history of this TZ250S, which is believed to have been purchased to use as a track bike and ridden at Mallory park (date unknown). Recommissioning will be required before the machine returning to the race track (the engine turns over). No documents.
All lots are sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.
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This Lot will be auctioned on Saturday 20 April starting at 2pm GMT.
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c.1986 Yamaha TZ250S Racing Motorcycle
Frame no. 1RK-000188
Engine no. 1RK-000188
The mainstay of 250cc 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 remained the same as 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. From the mid-1980s onwards, a succession of more radical changes would see the TZ fundamentally altered.
Offered here is an example of the new-for-1986 TZ250S, which for the first time featured Yamaha's Deltabox aluminium twin-spar frame and rising-rate rear suspension. Little had changed inside the engine apart from the switch to six-petal reed valves, up from the preceding four. Nothing is known of the history of this TZ250S, which is believed to have been purchased to use as a track bike and ridden at Mallory park (date unknown). Recommissioning will be required before the machine returning to the race track (the engine turns over). No documents.
All lots are sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.
REQUEST A TRANSPORT QUOTE
Please click the link to request a transport quote from our recommended transport company, Moving Motorcycles.
To request a UK or European shipping quote - Moving Motorcycles
To request an International shipping quote - Shippio
This Lot will be auctioned on Saturday 20 April starting at 2pm GMT.
Sale price
Estimate
Time
Auction House
