Yamaha Tacho Gear TD3/TR3 - 250/350A-G 18T or 20T Pt. No. 280-17851-00/278-17851-00
Yamaha TZ250/350A-G 1973-1980 Tacho gears, replacement of the original gears. Pt No. 280-17851-00 is for the TZ250 18 tooth. Pt No. 278-17851-00 is for the TZ350 20 tooth. Please state Number of teeth required when ordering.
Also fits TD/3TR3, DS7, R5, RD250/350/400. Check teeth required.