Titanium Output Gearbox Sprocket Nut 90179-18020

Made from aerospace grade 5 titanium, these will not rust like the standard item. They are 40% lighter than steel, reducing rotating mass.
The use of Anti seize is recommended upon installation

Fits:
Yamaha RD250LC / 350LC / YPVS
Yamaha Banshee
Yamaha TZ250 / 350 1972 - 1980