The two-cylinder Yamaha TZ350, launched in 1973, transformed the 350cc GP series at that time. The water cooling and some slight improvements over the air-cooled predecessors (TR2, TR2B and TR3), gave an incredible power to this bike which was defined an "unbeatable weapon in the hands of the right rider". Internally the motor hadn't changed much from the TR3 apart from the widths and angles of the transfers being altered to improve scavenging, though actual port timing remained as it was with the older model. Also the silicon content of the cylinder was lower compared to that of the TR3's separate hypereutectic units.
Production of the bike started in 1973 with Model A (60 bhp @9,500rpm) and ended 1981 with Model H (72 bhp @ 11,000rpm) when the GP series came to an end.
This motorcycle today still has dedicated websites and many fans providing the great impression it has left in the racing two-wheelers history.
Upon an increasing market demand, Meteor Piston has developed the piston for the Yamaha TZ350 1973-1981 Ref. 2338 Ø 57 mm for the Vintage section.
The piston by METEOR, compared to the original one, has been developed with some technical improvements:
1. Ring made of steel, for the Nikasil plated cylinder sleeve.
(in case of the piston requested for a chrome plated sleeve, ring will not be chromed)
2. Light weight structure, (especially in the head thickness) however resistant to mechanical stresses.
3. Well dimensioned piston pin boss, resistant to breakages.
PISTON AVAILABLE FROM BEGINNING OF OCTOBER 2014. TELL ALL THE FANS!